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1
Bharati, Smt. Sangita Subhash. "A Geographical Study of Drainage Pattern in Chhatrapati Sambhajinagar District." International Journal of Advance and Applied Research 11, no. 5 (2024): 483–86. https://doi.org/10.5281/zenodo.14676848.
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<strong>Introduction:</strong> Chhatrapati Sambhajinagar district falls in the basin of Godavari and Tapi rivers and all the other rivers in Tapi basin of the district are small except Vaghur river. River Godavari, also known as the South Ganga, is the largest major river in Maharashtra and Chhatrapati Sambhajinagar district. The source of this river is at Brahmagiri near Trimbakeshwar in Nashik district. This river enters Vaijapur taluka of Chhatrapati Sambhajinagar district from Nashik and Ahmednagar districts and flows across the border at most places in Vaijapur, Gangapur and Paithan talukas.
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Bharati, Smt. Sangita Subhash. "A Geographical Study of Drainage Pattern in Chhatrapati Sambhajinagar District." International Journal of Advance and Applied Research 11, no. 5 (2024): 488–91. https://doi.org/10.5281/zenodo.14747705.
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<strong>Introduction:</strong> Chhatrapati Sambhajinagar district falls in the basin of Godavari and Tapi rivers and all the other rivers in Tapi basin of the district are small except Vaghur river. River Godavari, also known as the South Ganga, is the largest major river in Maharashtra and Chhatrapati Sambhajinagar district. The source of this river is at Brahmagiri near Trimbakeshwar in Nashik district. This river enters Vaijapur taluka of Chhatrapati Sambhajinagar district from Nashik and Ahmednagar districts and flows across the border at most places in Vaijapur, Gangapur and Paithan talukas.
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Ingle, Vishal K., A. K. Mishra, A. Sarangi, D. K. Singh, and V. K. Seghal. "Hydrologic behaviour of Tapi river catchment using morphometric analysis." Journal of Applied and Natural Science 6, no. 2 (2014): 442–50. http://dx.doi.org/10.31018/jans.v6i2.480.
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The study area Tapi River catchment covers 63,922.91 Sq.Km comprising of 5 five Sub-catchments: Purna river catchment (18,473.6 sq.km) Upper Tapi catchment (10,530.3 sq. km), Middle Tapi catchment (4,997.3 sq km), Girna river catchment (10,176.9 sq.km) and lower Tapi catchment (19,282.5 sq.km.). The drainage network of 5 Sub-catchments was delineated using remote sensing data. The morphometric analysis of 5 Sub-catchments has been carried out using GIS softwares – ArcMap. The drainage network showed that the terrain exhibits dendritic to sub-dendritic drainage pattern. Stream orders ranged from sixth to seventh order. Drainage density varied between 0.39 and 0.43km/ km2and had very coarse to coarse drainage texture. The relief ratio ranged from 0.003 to 0.007. The mean bifurcation ratio varied from 4.24 to 6.10 and falls under normal basin category. The elongation ratio showed that all catchment elongated pattern. Thus, the remote sensing techniques proved to be a competent tool in morphometric analysis.
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LHEKNIM, VACHIRA. "Annotated Checklist for a Collection of Fishes from Tapi River Basin, south Thailand." Tropical Natural History 4, no. 2 (2004): 83–98. https://doi.org/10.58837/tnh.4.2.102900.
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A collection of fishes was taken from the Tapi River Basin floodplain, small tributaries and mainstream of the river in the middle and lower reaches of the basin in 1996. In this study, 49 species in 37 genera belonging to 20 families were collected, identified and deposited in the Prince of Songkla University Zoological Collection. Notes on occurrence, ecology and taxonomy are given. An additional 3 species: Lepidocephalichthys tomaculum Kottelat and Lim, 1992, Pseudeutropius cf. moolenburghae Weber and Beaufort, 1913 and Dermogenys sumatrana (Bleeker, 1853) are newly recorded species for Thailand. An additional 15 species are new recordings for the Tapi River Basin: Clupeichthys perakensis (Herre, 1936), Sundasalanx praecox Roberts, 1981, Esomus metallicus Ahl, 1924, Oxygaster pointoni (Fowler, 1934) Rasbora daniconius (Hamilton, 1822), Trigonostigma heteromorpha (Dunker, 1904), Mystus castanaeus Ng, 2002, Kryptopterus cf. bicirrhis (Valenciennes, 1839), Micronema cf. apogon (Bleeker, 1851), Phenacostethus cf. smithi Myers, 1928, Aplocheilus panchax (Hamilton, 1822), Indostomus crocodilus Britz and Kottelat, 1999, Nandus nebulosus (Gray, 1835) Brachygobius sebanus Inger, 1958 and Helostoma temmincki Cuvier, 1829.
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Et.al, Ketan A. Salunke. "Quantitative Analysis of a River Basin - A GIS-based Approach." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (2021): 3429–36. http://dx.doi.org/10.17762/turcomat.v12i3.1610.
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The river basin plays a fundamental role in planning the management of natural resources. The hydrological behavior of the basin depends on the geomorphological parameters of the hydrographic basin. In the present study, a morphometric analysis was performed to determine the linear, areal and relief parameters of the Panzara River, the main tributary of the Tapi River, using the Geographic Information System tool. The river basin is of seventh order, showing a dendritic pattern of drainage that indicates the homogeneity in the texture of the basin. The drainage density in the area is 2.56 and the mean bifurcation ratio 5.065 indicates the less impact of structural deformations on the basin. The stream frequency of the basin is 3.20 showing low relief and high permeability. The present study reveals that the applications of GIS techniques are reliable, take less time and are competent to manage large databases for management of river basins.
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Munoth, Priyamitra, and Rohit Goyal. "Hydromorphological analysis of Upper Tapi River Sub-basin, India, using QSWAT model." Modeling Earth Systems and Environment 6, no. 4 (2020): 2111–27. http://dx.doi.org/10.1007/s40808-020-00821-x.
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Dwivedi, C. S., Raghib Raza, D. Mitra, A. C. Pandey, and D. C. Jhariya. "Groundwater Potential Zone Delineation in Hard Rock Terrain for Sustainable Groundwater Development and Management in South Madhya Pradesh, India." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 14, no. 1 (2021): 106–21. http://dx.doi.org/10.24057/2071-9388-2020-195.
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In view of the vital significance of water resources and issues emerging from their temporal and spatial distribution and utilization posing serious problems to the land resources and to the society United Nations has identified sustainable management of water resources (SDG 6) as one of the seventeen major Sustainable Development Goals (SDGs). In this perspective, the purpose of the study is to identify the groundwater potential zones in the hard rock terrain of Betul-Chhindwara Region, Madhya Pradesh, India, using AHP technique. The study area comprises the sub-watersheds of Tawa river (Narmada basin), Tapi river (Tapi basin), Kanhan and Pench rivers (Godavari basin). Various thematic layers such as geomorphology, geology, physiography, rainfall, soil, slope, lineament, drainage density, groundwater depth, and land use/ land cover were developed. The analytical hierarchy process helps to delineate groundwater prospect zones, which are categorized into five classes, i.e. very poor, poor, moderate, good, and very good based on objective, criteria, and preference. The good, moderate, and poor groundwater potential zones cover 4815 sq. km., 6423 sq. km, and 4857 sq. km, respectively, comprising 22.46%, 29.96%, and 22.65% of the entire region under study. The result indicates that 15.22% of the area comprising 3262.10 sq. km have very good groundwater potential whereas 9.71% (2080 sq. km) has very poor groundwater potential. The obtained result has been verified through field check based on the yield data collected from 16 bore wells in the study area. The accuracy of the results was 75% that proves the efficiency of the adopted techniques. Thus, this study will be efficient for the sustainable development and management of groundwater in the study area.
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Munoth, Priyamitra, Lalit Kumar Gehlot, P. L. Patel, Sumit Khandelwal, P. V. Timbadiya, and Rohit Goyal. "Integrated hydrological modelling of two contrasting watersheds with a terminal reservoir in the Upper Tapi River basin, India." Water Supply 23, no. 12 (2023): 4891–907. http://dx.doi.org/10.2166/ws.2023.314.
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Abstract The present study developed an integrated hydrologic model for sustainable utilisation and water management in two complex watersheds with varying physioclimatic features and reservoirs. The soil and water assessment tool (SWAT) is used for predicting integrated inflows into the Hatnur reservoir from the Burhanpur and Purna watersheds of the Upper Tapi River basin, while outflows are simulated using a rule curve. The influence of watershed complexities on hydrological model parameters and the watershed processes are investigated using extensive multisite and multivariable calibration (1998–2007) and validation (2008–2013) approaches, including sensitivity and uncertainty analyses. The sensitive parameters are related to curve number (CN), groundwater, slope, and main channel characteristics. The annual streamflow (m3/km2/mm of rainfall) in the Burhanpur watershed is 568.7, which is 4.2 times higher than the Purna watershed's streamflow of 136.2. The hypsometric analysis, areal rainfall, and flow duration curves revealed a substantially different streamflow pattern and a larger coefficient of variation in the spatial distribution of water balance components over sub-watersheds in the Burhanpur watershed compared to the Purna watershed due to diverse topographic features. The developed model would be useful for planning controlled releases from the terminal reservoir to mitigate hazards in the downstream reaches of the Tapi River basin.
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Vichiantong, Sutatip, Thida Pongsanguansin, and Montri Maleewong. "Flood Simulation by a Well-Balanced Finite Volume Method in Tapi River Basin, Thailand, 2017." Modelling and Simulation in Engineering 2019 (January 15, 2019): 1–13. http://dx.doi.org/10.1155/2019/7053131.
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Flood simulation of a region in southern Thailand during January 2017 is presented in this work. The study area covers the Tapi river, the longest river in southern Thailand. The simulation is performed by applying the two-dimensional shallow water model in the presence of strong source terms to the local bottom topography. The model is solved numerically by our finite volume method with well-balanced property and linear reconstruction technique. This technique is accurate and efficient at solving for complex flows in the wet/dry interface problem. Measurements of flows are collected from two gauging stations in the area. The initial conditions are prepared to match the simulated flow to the measurements recorded at the gauging stations. The accuracy of the numerical simulations is demonstrated by comparing the simulated flood area to satellite images from the same period. The results are in good agreement, indicating the suitability of the shallow water model and the presented numerical method for simulating floodplain inundation.
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Ramkar, Preeti, and S. M. Yadav. "Spatiotemporal drought assessment of a semi-arid part of middle Tapi River Basin, India." International Journal of Disaster Risk Reduction 28 (June 2018): 414–26. http://dx.doi.org/10.1016/j.ijdrr.2018.03.025.
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Shivhare, V., M. K. Goel, and C. K. Singh. "Simulation Of Surface runoff For Upper Tapi Subcatchment Area (Burhanpur Watershed) Using SWAT." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-8 (November 28, 2014): 391–97. http://dx.doi.org/10.5194/isprsarchives-xl-8-391-2014.
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Water related activity that takes place in one part of a river basin may have consequence in the other part. Any plan related to inter basin transfer of water from a water surplus basin to a deficit basin has to take into account the water availability and demands under the present and future scenarios of water use. Watershed is a hydrologic unit where all stream exit from the common outlet. In the present study, Tapi subcatchment area (Burhanpur watershed) located in inter-state basin of Madhya Pradesh and Maharashtra, India, is selected for the estimation of surface runoff using SWAT model. The SWAT works in conjunction with Arc GIS 9.3. Various parameters Digital Elevation Model (DEM), slope derived from DEM, Landuse/Landcover (LULC) and NBSSLUP soil data and temporal data for temperature and precipitation was used as input for the model to predict runoff at the catchment outlet. The model was run from the year 1992 to 1997. The performance of the model in terms of simulated runoff was evaluated using statistical method and compared simulated monthly flow with the observed monthly flow values from 1992 to 1996 to a significant extent. The coefficient of determination (R<sup>2</sup>) for the monthly runoff values for 1992 to 1996 was observed to be 0.82, 0.68, 0.92, 0.69.
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Sargaonkar, Aabha. "Estimation of Land Use Specific Runoff and Pollutant Concentration for Tapi River Basin in India." Environmental Monitoring and Assessment 117, no. 1-3 (2006): 491–503. http://dx.doi.org/10.1007/s10661-006-0769-2.
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Ketan, A. Salunke, and S. Wayal Abhaykumar. "Morphometric Analysis of Panjhara River Basin With Use of GIS for Development of Watershed Plan." Indian Journal of Science and Technology 16, no. 12 (2023): 894–902. https://doi.org/10.17485/IJST/v16i12.2202.
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Abstract <strong>Objectives:</strong> Geomorphological changes that occur within a watershed have an influence on the availability and scarcity of water. As a consequence, a quantitative analysis of the watershed geometry is necessary to ascertain the impact of geomorphological processes on the catchment’s hydrology. <strong>Methods:</strong> Remote sensing (RS) and geographic information systems (GIS)- based strategies have gained in popularity recently because they help strategists and decision-makers make precise and effective decisions. The Panjhara River basin, tributary of Tapi River was selected for this study. The research demonstrates that, for improved planning and maintenance, GIS and RS data may be utilized to analyze and approximatively measure the duration and pace of erosional activities in a Panjhara River basin. The technique uses a 30-meter shuttle radar topography mission digital elevation model (SRTMDEM) and Survey of India toposheet for efficient and quick extraction of morphometric data and hypsometric analysis. <strong>Findings:</strong> The linear, areal, and relief aspects of the Panjhara River catchment were subjected to the twentysix morphometric criteria. The Re, Rc, and Ff all imply an elongated basin form. According to statistical study, there is a strong correlation between stream order and stream number as well as between stream order and stream length. The shape of the hypsometric curves and the findings of the computed hypsometric integrals represent the erosive phases of the Panjhara River basin. <strong>Novelty:</strong> The research finds that stakeholders involved in watershed development and management initiatives may find the results of morphometric and hypsometric analyses valuable. <strong>Keywords:</strong> Morphometric Analysis; Hypsometric Analysis; Stream; GIS
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Chochande, Ranjana Uttamrao. "Cash crops Cropping Pattern in Jalgaon District: Special Reference Cotton and Sugarcane." Journal of Research & Development 17, no. 1 (2025): 221–26. https://doi.org/10.5281/zenodo.14964786.
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<strong><em>Abstract:</em></strong><em> </em> <em>The study region is produced variety of crops and also produced </em> <em>food</em> <em>grains and cash crops. </em><em>Middle part of Tapi river basin is suitable for agriculture. but Satpura mountainous and Ajanta hilly </em><em> </em><em>region is not suitable for agriculture. Out of total geographical area of the Khandesh about 57% area is under </em><em> </em><em>agriculture. Because of deep sediment deposited at the surrounding Tapi river bank. So, this region is more </em><em> </em><em>suitable for agriculture purposes. </em><em> </em><em>Area of shallow medium black soil in Jalgaon district is 638. 1 thousands hectares and it is very suitable </em><em> </em><em>for cotton and banana crops. and the area of deep black soil is 213. 5 thousands hectares is suitable for </em><em> </em><em>sugarcane, banana and other cash crops. Due to this cash crop cultivation, this area is considered a rich region.</em><em> </em><em>The area under net crop is 844 4.2 thousand hectares and twice the crop area is 480360 hectare. so agriculture </em><em> </em><em>is a major occupation in Jalgaon district. </em><em> </em><em>Water streams of Satpura and tributaries of Tapi river (Girna, Purna, Bhogavati, Aner, Panjara, Waghur </em><em> </em><em>etc.) increases underground water level in this region. farmers of this area mainly taking cash crops like </em><em> </em><em>sugarcane, cotton and banana etc. Yawal and Raver Taluka are famous for banana production. Irrigation is </em><em> </em><em>essential for these crops. So, farmers irrigated their land by Canal, Wells and tube wells.</em>
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Malani, Urvashi, and SanjayKumar M. Yadav. "Impact of historical and future land use land cover on spatial-temporal variation of discharge and sediment load of Upper Tapi Basin, India." Water Supply 22, no. 11 (2022): 8266–86. http://dx.doi.org/10.2166/ws.2022.355.
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Abstract Trend detection of discharge and sediment load is vital to adopt suitable conservation measures as per the changes occurring. In the present study, trends of daily streamflow and sediment load for Upper Tapi Basin are analyzed using Mann-Kendall, modified Mann-Kendall, and innovative trend analysis and change points are found using Pettitt tests from 1985 to 2020 to determine time series' trend with the statistical significance. Land use land cover (LULC) for Upper Tapi Basin is prepared for three decades (1989–2020). Innovative trend analysis has shown non-monotonicity in the time series with a decreasing trend. The streamflow is found to be significantly decreasing in the basin. A decline in sediment load is observed in Burhanpur and Gopalkheda while there is an increasing trend in Yerli G.S. The rise in anthropogenic activities is the main reason behind the reduction in suspended sediment load (SSL) over the basin. The decadal analysis of LULC showed an increase in built-up area (18.3%), barren land (5–8%), waterbodies (1.2–1.9%) agricultural land (50–60.79%) and a decrease in vegetation (from 43 to 21%). The LULC for 2030 is predicted with Land Change Modeler (LCM) in IDRISI Terrset. The estimated LULC shows that the built-up area will expand as agricultural land decreases. The overall study indicates that anthropogenic activities will increase in the future. The findings of this study will aid in decision making for river basin water resource management, as well as understanding the influence of human-caused activities on flow and sediment load variance.
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Umrigar, Jaini, Darshan J. Mehta, Tommaso Caloiero, Hazi Md Azamathulla, and Vijendra Kumar. "A Comparative Study for Provision of Environmental Flows in the Tapi River." Earth 4, no. 3 (2023): 570–83. http://dx.doi.org/10.3390/earth4030030.
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Environmental flows are defined as the flow required into a stream to maintain the river’s ecosystem. The notion of Environmental Flow Allocation (EFA) ensures that a sufficient amount of water is delivered to the stream to maintain ecological integrity. The objective of this study is to examine environmental flows and determine the best acceptable strategy for providing flows into the river in the Lower Tapi Basin. To achieve this objective, daily discharge data from three sites, Ukai (period 1975–2020), Motinaroli (period 1990–2021), and Ghala (period 1995–2005) were collected and analyzed using the Tennant, Tessman, variable monthly flow (VMF), and Smakhtin methodologies. A comparative analysis was carried out on all three sites using the four methodologies. The Tessman and VMF approaches have a strong connection with the computed environmental flow requirements (EFR), according to the results. The calculated EFR was found to be in the range of 30–35% of mean annual flows (MAF). The maximum EFR found at station Ghala is about 54.5% of MAF according to the Tessman method. Such research will help to prevent future degradation of the river by supplying flow in accordance with the EFR, and it will also be used by stakeholders and policymakers to allocate water to preserve the ecosystem.
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ARCHANA D., PATIL, and HIRE PRAMODKUMAR S. "Flood hydrometeorological situations associated with monsoon floods on the Par River in Western India." MAUSAM 71, no. 4 (2021): 687–98. http://dx.doi.org/10.54302/mausam.v71i4.58.
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The objective of present work is to understand flood hydrometeorological situations associated with monsoon floods on the Par River, therefore, the analyses of synoptic conditions connected with large floods was carried out. This encompasses analysis of interannual rainfall variability and associated floods, analysis of storm tracts, investigation of normalized accumulated departure from mean (NADM) and evaluation of the relation between El Niño and monsoon rainfall. In order to accomplish above analyses, the annual rainfall data of the Par Basin have been obtained for 118 years from India Meteorological Department (IMD), Pune and Chennai. The annual maximum series (AMS)/stage data were procured for a gauging site namely Nanivahial for 45 years from Irrigation Department of Gujarat State, Ahmedabad. The results indicate that the interannual variability was characterized by increased frequency and magnitude of floods on the Par River primarily after 1930s. Majority of the large floods in the basin were connected with low pressure systems. It is observed that most of the floods were associated with positive departure from mean rainfall in the basin. The NADM graph shows epochal behaviour of high and low rainfall of the basin and floods. The analysis of El Niño and Southern Oscillation indicates that the probability of the occurrence of the floods in the Par Basin is high during the average SST index and majority of the floods in the basin have occurred during above normal conditions of rainfall. The present study can, therefore, prove to be a significant contribution towards the Par-Tapi-Narmada link project of the Government of Gujarat and water divergent projects of the Government of Maharashtra in association with Government of India.
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Khim, Boo-Keun, Keiji Horikawa, Yoshihiro Asahara, Ji-Eun Kim, and Minoru Ikehara. "Detrital Sr–Nd isotopes, sediment provenances and depositional processes in the Laxmi Basin of the Arabian Sea during the last 800 ka." Geological Magazine 157, no. 6 (2018): 895–907. http://dx.doi.org/10.1017/s0016756818000596.
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Abstract87Sr/86Sr ratios and εNd values of detrital particles at International Ocean Discovery Program (IODP) Site U1456 in the Laxmi Basin of the Arabian Sea were measured to trace changes in sediment provenance over glacial–interglacial cycles. Based on the correlation of planktonic foraminiferal (Globigerinoides ruber) δ18O fluctuations with the LR04 stack of benthic foraminifera δ18O values, combined with shipboard biostratigraphic and palaeomagnetic data, the studied interval spans ∼1.2 Ma. Over the past 800 ka, 87Sr/86Sr values ranged from 0.711 to 0.726 while εNd values ranged between −12.5 and −7.3 in the detrital particles. By comparing 87Sr/86Sr ratios and εNd values of the possible sources of river sediments with our data, we found that sediments in the Laxmi Basin were influenced to various degrees by proportions of at least three sediment sources (i.e. Tapi River, Narmada River and Indus River). The Indus River might be a more important contributor to glacial sediments. Although 87Sr/86Sr ratios and εNd values varied quasi-cyclically, this pattern did not correspond precisely to the glacial–interglacial cycles. In particular, low-magnetic-susceptibility (low-MS) intervals coinciding with pelagic carbonates were characterized by low 87Sr/86Sr ratios and high εNd values, whereas high-MS intervals matching turbidite deposits showed high 87Sr/86Sr ratios and low εNd values. Thus, this study reveals that differences in the depositional processes between glacial and interglacial periods, governed by changes in sea level and monsoon activity, are an important factor in deciding 87Sr/86Sr ratios and εNd values of the detrital fraction in the Indus Fan of the Arabian Sea.
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Munoth, Priyamitra, and Rohit Goyal. "Impacts of land use land cover change on runoff and sediment yield of Upper Tapi River Sub-Basin, India." International Journal of River Basin Management 18, no. 2 (2019): 177–89. http://dx.doi.org/10.1080/15715124.2019.1613413.
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Sargaonkar, A., R. Vijay, and A. Gupta. "Quantitative assessment of annual runoff in sub‐catchments using GIS: a case study of the Tapi River Basin, India." International Journal of Environmental Studies 63, no. 2 (2006): 189–99. http://dx.doi.org/10.1080/00207230600562403.
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Sondarva, K. N., and P. S. Jayswal. "Land use/ land cover change study of the lower Tapi river basin using Remote Sensing and Geographic Information System." Current Advances in Agricultural Sciences(An International Journal) 15, no. 1 (2023): 37–43. http://dx.doi.org/10.5958/2394-4471.2023.00007.2.
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Ramani, Resmi Saseendran, Prem Lal Patel, and Prafulkumar Vasharambhai Timbadiya. "Key morphological changes and their linkages with stream power and land-use changes in the Upper Tapi River basin, India." International Journal of Sediment Research 36, no. 5 (2021): 602–15. http://dx.doi.org/10.1016/j.ijsrc.2021.03.003.
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PAWAN N. BHAVSAR and JAYANTILAL N. PATEL. "Development of relationship between crop coefficient and NDVI using geospatial technology." Journal of Agrometeorology 18, no. 2 (2016): 261–64. http://dx.doi.org/10.54386/jam.v18i2.947.
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In the present study, potential evapotranspiration (PET) is estimated using geographic information system (GIS) and remote sensing (RS) data. Linear imaging self-scanning sensor (LISS-III) satellite images of Tapi river basin area were used in the present study. The study area is classified into five different zones, namely forest land, agricultural land, barren land, urban land and water bodies bysupervised classification. NDVI values for the respective zones (class) were used to estimate crop coefficient (Kc) using linear regression model. Reference evapotranspiration (ETo) was calculated from Penman–Monteith model and PET was calculated by multiplying the Kc and ETo. The results obtained by this methodology were validated using actual evapotranspiration. A new linear model was developed for the study area between NDVI and Kc. Developed methodology for the determination of Kc derived fromRS data and NDVI-Kc model may be useful for irrigation scheduling and estimating water use efficiency.
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Golekar, R. B., M. V. Baride, S. N. Patil, Rajesh Mohite, Sunil Patil, and H. N. Ronad. "Estimation of Hydraulic Conductivity from Grain Size Distribution: A Case Study of Sediments From Panzara River, Tapi Basin, Northern Maharashtra (India)." Bulletin of Pure & Applied Sciences- Geology 35f, no. 1and2 (2016): 1. http://dx.doi.org/10.5958/2320-3234.2016.00001.9.
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Chandole, Vishal, Geeta S. Joshi, and Shilpesh C. Rana. "Spatio -temporal trend detection of hydro -meteorological parameters for climate change assessment in Lower Tapi river basin of Gujarat state, India." Journal of Atmospheric and Solar-Terrestrial Physics 195 (November 2019): 105130. http://dx.doi.org/10.1016/j.jastp.2019.105130.
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Ogade, Shobha Appasaheb, Mazahar Farooqui, Anis Ahmed Sheikh, and Syed Ummul Khair Asema. "Evaluation of Physico-Chemical Studies on Groundwater in and around Aurangabad’s Waluj MIDC Area." Ecology, Environment and Conservation 28, no. 04 (2022): 2125–29. http://dx.doi.org/10.53550/eec.2022.v28i04.073.
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Aurangabad District is primarily in the Godavari Basin, with a small portion in the Tapi River Basin to the north. Aurangabad is the divisional head of Maharashtra’s Marathwada area, which is located on 74 to 76 degrees East longitude and 19 to 20 degrees North latitude. It is part of India’s huge Deccan plateau. Aurangabad covers a total area of 10107 square kilometres, accounting for 3.28 percent of the state’s total area. Chikhalthana MIDC, Shendra MIDC, and Waluj MIDC are three of Aurangabad’s major industrial regions. The present study is under taken to explore the temperature, PH, DO, COD, TDS, TSS, Alkalinity, total hardness, nitrate, vhloride, and Sulphate, among other physico-chemical parameters, from Waluj MIDC area. The findings demonstrate that the majority of the physical and chemical parameters are well within the acceptable range. DO levels were found to be higher than the permitted limit at all sampling stations. When the results were compared to the World Health Organization’s drinking quality criteria, It had been discovered that a few examples of water quality metrics were higher than the acceptable maximum value while others were not. Furthermore, current research might aid new places in better comprehending the hazards to the underground water supplies.
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Upadhyay, H., P. K. Singh, and M. Kothar. "Climate Change and Consequential Rainfall Trends: An Indian Perspective." Ecology, Environment and Conservation 29 (2023): S124—S131. http://dx.doi.org/10.53550/eec.2023.v29i01s.019.
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This article presents an overview of different studies pertaining to the trends observed in rainfall over India and its constituent regions. The spatial scale of trend estimation considered in the reviewed studies is an important aspect that dictates the overall trends over a given scale and helps in ascertaining the influence of anthropogenic activities upon the resultant trends. In this article, Indian trend analysis studies conducted on a national, meteorologic sub-divisional, river basin and agro-climatic zonal level as well as for different time periods and time scales have been reviewed. One of the more recent national-scale studies were able to detect overall negative trends in the annual rainfall over India with a more prominent decline observed during the latter half of the 20th century and first decade of 21st century. Also, 17 out of 30 meteorological sub-divisions for which trend analysis was carried out exhibited increasing tendencies though, all were insignificant. Most of the river basins of India have shown an increasing trend in annual rainfall with Indus (lower) and Tapi basins observing maximum rise. Decreasing trends were however, recorded over most of the basins especially after 1970. The conclusions drawn from the review of suitable studies highlight the variation in trends across different studies due to a different set of variables and factors involved in individual studies. The practical significance of trend analysis has also been discussed along with a need of a more subjective assessment of the mathematical outputs obtained from commonly used trend analysis methods.
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Wati, Tisna, Annas Firman, Dwi Kumalasari, et al. "Pengaruh Agregat Kasar Batu Kali Manggaran Dan Batu Pecah Tapa Utama Terhadap Kuat Tekan Beton Pada Bangunan Struktur." Jurnal Teknik Sipil dan Teknologi Konstruksi 10, no. 1 (2024): 57. http://dx.doi.org/10.35308/jts-utu.v10i1.9413.
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Abstract Good quality concrete is concrete whose basic ingredients are also of good quality. One of the ingredients that make up concrete that determines the compressive strength of concrete is coarse aggregate. Coarse aggregate itself is a resource that is easy to obtain, widely available in nature and in various types. According to its origin, coarse aggregate used as a building material for concrete can be divided into two, namely natural aggregate obtained from rivers and artificial aggregate obtained from crushed stone. This research was carried out using 3 variations, namely 100% Kali Manggaran stone, 100% Tapa Utama crushed stone, and a combination of 50% Manggaran 50% Tapa Utama with a plan to use concrete quality K225 or 18.68 MPa, according to the minimum requirements of the concrete quality plan for structural work. The results of the research show that the use of 100% Manggaran river stone at a concrete age of 14 days is 14,834 MPa and 18,117 MPa. Meanwhile, the use of 100% crushed stone tapa Utama obtained a concrete compressive strength of 17,256 MPa at a concrete age of 14 days and 21,045 MPa at an age of 28 days and was in accordance with the planned concrete quality. The maximum compressive strength is the 100% crushed stone tapa Utama concrete variation with a concrete age of 28 days. Keywords: Coarse Aggregate, Compressive Strength of Concrete, Manggaran River Stone, Tapa Utama Crushed Stone
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Afdah, Umi, Mikael Adri Budi Sulistyo, Yekti Sri Rahayu, and Mariana Fitri Rahmawati. "Pemanfaatan Daerah Aliran Sungai Sedudut Sebagai Rintisan Eduwisata di RT 03 RW 06 Mulyorejo Kota Malang." JAST : Jurnal Aplikasi Sains dan Teknologi 7, no. 1 (2023): 72–86. http://dx.doi.org/10.33366/jast.v7i1.5155.
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The Sedudut river basin across RT 3 RW 6 Mulyorejo Subdistrict is still not managed well, causing problems such as silting of the river, uneven water flow, environmental pollution, accumulation of rubbish, unpleasant odors and lots of mosquitoes. The aim of community service is to raise awareness among residents and farmer cadets to manage river watersheds to become educational tourism pilots. The method used is community education and advocacy to local governments to create educational tourism targeting residents and farming cadets. The results have been the realization of pioneering educational tourism and institutional strengthening of Sariwongso farmer cadets in managing river watersheds. Support from RT administrators and community leaders increases the involvement of Taruna Tani Sariwangso in managing the Sedudut river basin. The benefits felt by local residents include: the flow of river water is smooth, so there are no piles of rubbish which cause odors and the growth of mosquitoes. The wareng system that has been built has increased from 3 to 5 warengs so that the management of river cleanliness by the residents of RT 3 RW 6 is getting better. The young group of Taruna Tani has been actively pioneering activities in RW6, strengthened by the issuance of the Decree on the Establishment of Taruna Tani which has been ratified by the local RT Head. The number of residents involved previously increased from 4 people to 16 people. The Malang City Government provides support for facilities (fish seeds, feed, harvest nets) and pedestrian infrastructure and fenced bridges to support educational tourism pilots for management of the Sedudut river area.ABSTRAKDaerah aliran sungai Sedudut melintasi RT 3 RW 6 Kelurahan Mulyorejo masih belum dikelola dengan baik sehingga menimbulkan permasalahan seperti pendangkalan sungai, aliran air tidak lancar, pencemaran lingkungan, penumpukan sampah, berbau tidak sedap dan banyak nyamuk. Tujuan pengabdian masyarakat untuk menumbuhkan kesadaran warga dan taruna tani untuk mengelola daerah aliran sungai untuk dijadikan rintisan wisata edukasi. Metode yang digunakan adalah pendidikan masyarakat dan advokasi kepada pemerintah daerah untuk mewujudkan wisata edukasi dengan sasaran warga dan taruna tani. Hasilnya telah terwujud rintisan wisata edukasi dan penguatan kelembagaan taruna tani Sariwongso dalam mengelola daerah aliran sungai. Dukungan pengurus RT dan tokoh masyarakat menumbuhkan keterlibatan Taruna Tani Sariwangso untuk mengelola daerah aliran sungai Sedudut. Manfaat yang dirasakan warga sekitar, seperti: aliran air sungai lancar, sehingga tidak terjadi tumpukan sampah yang menyebabkan bau dan perkembangan nyamuk. Sistem wareng yang terbangun bertambah dari 3 menjadi 5 wareng sehingga pengelolaan kebersihan sungai oleh warga RT 3 RW 6 semakin baik. Kelompok muda Taruna Tani telah aktif merintis kegiatan di RW6 diperkuat dengan terbitnya SK Pendirian Taruna Tani yang telah disahkan Ketua RT setempat. Jumlah warga yang terlibat sebelumnya 4 orang menjadi 16 orang. Pemerintah Kota Malang memberikan dukungan sarana (benih ikan, pakan, alat jaring panen) dan prasarana pedesterian dan jembatan berpagar untuk mendukung rintisan wisata edukasi pengelolaan daerah sungai Sedudut.
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Bagdžiunaitė-Litvinaitienė, Lina, Andrius Litvinaitis та Valentinas Šaulys. "PATTERNS OF RIVER RUNOFF CHANGE CONSIDERING THE SIZE OF THE BASIN / ĮVAIRAUS BASEINO DYDŽIO LIETUVOS UPIŲ NUOTĖKIO KAITA / ИЗМЕНЕНИЕ СТОКА РЕК ЛИТВЫ РАЗНОЙ КРУПНОСТИ". Journal of Environmental Engineering and Landscape Management 19, № 4 (2011): 326–34. http://dx.doi.org/10.3846/16486897.2011.634057.
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Climatic change and fluctuations of river runoff are among the most urgent topics nowadays. It is important to analyse and establish tendencies for forecasting. The article deals with the reasons of runoff variation trends, i.e. river basins with different physical-geographical and meteorological conditions are analysed. In the research, statistical Mann-Kendall test and correlation coefficients were applied to assess the influence of precipitation amount variation on the variation of river discharges. The achieved results showed that the correlation links between a major river outflow (Neris) and precipitation were established only during autumn and winter seasons, however, the links were very weak (correlation coefficient of 0.4). The correlation between major river runoff and precipitation is also weak but can be observed during summer season as well. The highest correlation coefficients were established in rivers of average size. This proves that the smaller the river, the stronger is the reaction to local climatic factors. Santrauka Klimato kaita ir upių nuotėkio svyravimai – viena iš aktualiausių nūdienos temų. Aptariama nuotėkio kaitos tendencijų priežastys, t. y. analizuojama upių baseinai, kurių skirtingos fizinės-geografinės bei meteorologinės sąlygos. Tyrimams taikyti statistikos Mann-Kendall testas bei koreliacijos koeficientai. Jais buvo įvertinta kritulių kiekio kaitos įtaka upių debitų kaitai. Gauti rezultatai parodė, kad labai didelės upės nuotėkio ir kritulių koreliacijos ryšiai nustatyti tik rudens ir žiemos sezonais, bet tai yra labai silpni ryšiai. Didelių upių nuotėkio ir kritulių tarpusavio sąsaja taip pat yra silpna, bet jau pastebima ir vasaros sezoną. Didžiausi koreliacijos koeficientai buvo vidutinio dydžio upių, ir tai įrodo, kad kuo mažesnė upė, tuo ryškesnė reakcija į lokalius klimato veiksnius. Резюме Изменение климата и колебания стока рек являются одним из наиболее актуальных вопросов сегодняшнего дня.В статье рассматриваются причины изменения стока, анализируются бассейны рек с разными физикогеографическими и метеорологическими условиями. При исследованиях использовался статистический тестМаннаКендалла и коэффициенты корреляции для учета влияния количества осадков на оценку изменения стокарек. Полученные результаты показали, что для очень крупных рек (Нерис) корреляционные связи стока и количества осадков установлены лишь в осеннезимний период, однако эта связь очень слаба (коэффициент корреляции0,4). Связь стока и количества осадков для меньших рек является слабой, однако она наблюдается и в летний период. Наибольший коэффициент корреляции зафиксирован для рек средней величины. Таким образом, установлено, что чем меньше река, тем резче реакция ее стока на локальные климатические действия.
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Jia, Luhao, Mingya Wang, Shili Yang, et al. "Analysis of Agricultural Carbon Emissions and Carbon Sinks in the Yellow River Basin Based on LMDI and Tapio Decoupling Models." Sustainability 16, no. 1 (2024): 468. http://dx.doi.org/10.3390/su16010468.
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In addition to creating economic value, crops also serve important ecological functions. Especially their carbon sink function, which plays a key role in mitigating climate change. In this study, the LMDI and the Tapio model were innovatively combined to quantitatively evaluate the carbon emissions and sinks in the Yellow River basin (YRB). It shows that the average annual growth rate of the YRB was −0.1344% during 2002–2020. Carbon emissions show a negative trend due to the transformation and upgrading of agriculture from traditional to modern and the implementation of policies related to China’s agricultural benefits. Agricultural production efficiency is a major factor in inhibiting agricultural carbon emissions, reducing carbon emissions by an average of approximately 8.07 million tons per year. High-carbon emission and high-sink areas in agriculture are mainly concentrated in the southeast of the YRB, where livestock and poultry farming is the principal source of carbon emissions, with rice, wheat, and corn being the principal contributors to the carbon sink. Moreover, there are significant differences in the carbon sink capacity of crops in the YRB. Optimizing crop selection and area distribution can enhance the carbon sink capacity in different regions, contributing to more effective carbon emission control. This study combines agricultural carbon emissions with the carbon sequestration capacity of crops, providing data support and a theoretical basis for the policy formulation and planning of low-carbon agriculture in China. It is of great significance for promoting sustainable agricultural development and mitigating climate change.
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Blanco, Roberto, and Juan A. Blanco. "Empowering Forest Owners with Simple Volume Equations for Poplar Plantations in the Órbigo River Basin (NW Spain)." Forests 12, no. 2 (2021): 124. http://dx.doi.org/10.3390/f12020124.
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Hybrid poplar plantations are becoming increasingly important as a source of income for farmers in northwestern Spain, as rural depopulation and farmers aging prevent landowners from planting other labor-intensive crops. However, plantation owners, usually elderly and without formal forestry background, lack of simple tools to estimate the size and volume of their plantations by themselves. Therefore, farmers are usually forced to rely on the estimates made by the timber companies that are buying their trees. With the objective of providing a simple, but empowering, tool for these forest owners, simple equations based only on diameter were developed to estimate individual tree volume for the Órbigo River basin. To do so, height and diameter growth were measured for 10 years (2009–2019) in 404 trees growing in three poplar plantations in Leon province. An average growth per tree of 1.66 cm year−1 in diameter, 1.52 m year−1 in height, and 0.03 m3 year−1 in volume was estimated, which translated into annual volume increment of 13.02 m3 ha−1 year−1. However, annual volume increment was different among plots due to their fertility, with two plots reaching maximum volume growth around 11 years since planting and another at 13 years, encompassing the typical productivity range in plantations in this region. Such data allowed developing simple but representative linear, polynomial and power equations to estimate volume explaining 93%–98% of the observed variability. Such equations can be easily implemented in any cellphone with a calculator, allowing forest owners to accurately estimate their timber existences by using only a regular measuring tape to measure tree diameter. However, models for height were less successful, explaining only 75%–76% of observed variance. Our approach to generate simplified volume equations has shown to be viable for poplar, but it could be applied to any species for which several volume equations are available.
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Mua, Kang Edwin, and Kometa Sunday Shende. "The Response of Stream Competence to Topographic and Seasonal Variations in The Bamenda-Menchum Drainage Basin, North West Region, Cameroon." Journal of Geography and Geology 11, no. 2 (2019): 21. http://dx.doi.org/10.5539/jgg.v11n2p21.
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The flow direction of streams remains an establishing mechanism in understanding drainage basin function and stream competence. The ability of streams to erode, transport and deposit loads in fluvial geomorphology exert a benchmark precursor for slope dynamics given the differential geological outcrop of the Bamenda-Menchum basin. Such competence in stream network generates slope instability as materials continuously move down slope from the volcanic escarpment face of Bamenda highlands to the sedimentary lowland area of Lower Bafut-Menchum basin. This paper investigate the influence of stream flow direction and stream competence on slope dynamics and how such dynamism affects the development prospects of the drainage basin. Slope range was obtained from AVL/EBI.JHO measurement. Stream length, density and flow direction were gotten from GIS Arc 21. Stream depth, channel width, flow rate and sedimentation levels were measured. Gully depth on slopes and landslide angles were measured using 30m tape and a graduated pole. Questionnaires were used to collect information on the vulnerability of households to slope dynamics orchestrated by stream competence. Findings revealed that stream competence varies from the two geological basements and that the escarpment face respond to high flow gravity and hydraulic action contributing to rapid erosion and transportation of loads. The results equally showed that the Bamenda escarpment face that is linked to the crystalline rocks produce differential erosion and landslide. 76.7% of slope instability is explained by geological structure and seasonality effect in the basin while 23.3% of slope dynamics is explained by other variables not specified in the study. The lower basin remains liable to deposition of materials on river channels and flood plain. The accumulation of sand, stones and alluvial deposits are extracted and exploited for the development prospects of the basin. The study recommends channel and slope management by integrating slope development control policy in drainage basin management and development.
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Attar, Nasrin Fathollahzadeh, Quoc Bao Pham, Sajad Fani Nowbandegani, et al. "Enhancing the Prediction Accuracy of Data-Driven Models for Monthly Streamflow in Urmia Lake Basin Based upon the Autoregressive Conditionally Heteroskedastic Time-Series Model." Applied Sciences 10, no. 2 (2020): 571. http://dx.doi.org/10.3390/app10020571.
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Hydrological modeling is one of the important subjects in managing water resources and the processes of predicting stochastic behavior. Developing Data-Driven Models (DDMs) to apply to hydrological modeling is a very complex issue because of the stochastic nature of the observed data, like seasonality, periodicities, anomalies, and lack of data. As streamflow is one of the most important components in the hydrological cycle, modeling and estimating streamflow is a crucial aspect. In this study, two models, namely, Optimally Pruned Extreme Learning Machine (OPELM) and Chi-Square Automatic Interaction Detector (CHAID) methods were used to model the deterministic parts of monthly streamflow equations, while Autoregressive Conditional Heteroskedasticity (ARCH) was used in modeling the stochastic parts of monthly streamflow equations. The state of art and innovation of this study is the integration of these models in order to create new hybrid models, ARCH-OPELM and ARCH-CHAID, and increasing the accuracy of models. The study draws on the monthly streamflow data of two different river stations, located in north-western Iran, including Dizaj and Tapik, which are on Nazluchai and Baranduzchai, gathered over 31 years from 1986 to 2016. To ascertain the conclusive accuracy, five evaluation metrics including Correlation Coefficient (R), Root Mean Square Error (RMSE), Nash–Sutcliffe Efficiency (NSE), Mean Absolute Error (MAE), the ratio of RMSE to the Standard Deviation (RSD), scatter plots, time-series plots, and Taylor diagrams were used. Standalone CHAID models have better results than OPELM methods considering sole models. In the case of hybrid models, ARCH-CHAID models in the validation stage performed better than ARCH-OPELM for Dizaj station (R = 0.96, RMSE = 1.289 m3/s, NSE = 0.92, MAE = 0.719 m3/s and RSD = 0.301) and for Tapik station (R = 0.94, RMSE = 2.662 m3/s, NSE = 0.86, MAE = 1.467 m3/s and RSD = 0.419). The results remarkably reveal that ARCH-CHAID models in both stations outperformed all other models. Finally, it is worth mentioning that the new hybrid “ARCH-DDM” models outperformed standalone models in predicting monthly streamflow.
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Qaouiyid, Aziz, Hafida Jaghror, Hajar Hmima, Kaoutar Houri, Ilhame Saad, and Fadli Mohamed. "Taxonomic structure of benthic diatoms' communities in spring in six sites of Oued beht and Oued r'dom (Morocco)." Biolife 4, no. 3 (2022): 536–46. https://doi.org/10.5281/zenodo.7333267.
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<strong>ABSTRACT</strong> The present work is concerned with the determination of an inventory of diatoms of two rivers of Morocco, Oued Beht and Oued R'dom to the levels of two riverine cities Sidi Slimane and Sidi Kacem. The harvested spring algal flora is composed of 93 species and varieties of species belonging to 11 orders of which the most represented in families are the orders of the Naviculales and Cocconeidales. In total 16 families are identified, which are subdivided into 25 genera. The families of <em>Fragilaceae, Gomphonemataceae, Naviculaceae</em>, <em>Bacillariaceae, Achanthaceae</em> have two genera each. The genera specifically the more rich are Nitzschia, Navicula and Gomphonema. The taxonomic structure of diatomic communities varies significantly from upstream to downstream of the riverine cities studied, but the variation is clearer when one considers the abundance of species. The discharged industrial and urban wastewater at the level of each city, the activity of cleansing performance of the river and the variation of responses of species, or varieties of species, to different physico-chemical conditions along the course of water are the main causes. Results of the index of diversity of Shannon-Wiener are in agreement with this result and the calculated equitabilities in the stations of each river do not differ much from a station to another, because, when in a biotop the effectives of some species are declining, those of other species are increasing. <strong>Keywords: </strong>Diatoms, Spring, Oued Beht, Oued R'dom, Morocco <strong>REFERENCES</strong> Abdellaoui A., 1990. Contribution à l’étude de la pollution des cours d’eau marocains par les métaux lourds – Cas d’oued Boufekrane : Thèse de 3éme cycle, Univ. Moulay Ismail, Meknès, 258p. AFNOR, 2000. Qualité de l’eau. 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The Ame J Sci & Med Res, 2015,1(1):53-60. doi:10.17812/ajsmr2015113. Lowe, R. L., & Pan, Y. (1996). Benthic algal communities asbiological indicators. In R. J. Stevenson, M. L. Bothwell,& R. L. Lowe (Eds.), Algal ecology. Freshwater benthicecosystems (pp. 705–739). San Diego: Academic. Loez, C. R., & Topalian, M. L. (1999). Use of algae formonitoring rivers in Argentina with a special emphasis for Reconquista River (region of Buenos Aires). In J. Nigorikawa A., 1998. Water pollution from Ditom Assemblages and Water qualities at Ditches of Takada-Castle Ruins, Joetsu Cty, Niigata Prefecture, Central Japan. Basic Research on Environmental Education. Bulletin of Joetsu Univ. of Educ. Vol 17 n° 2: 619-636 Patrick, R., & Hendrickson, J. (1993). Factors to consider in interpreting diatom changes. Nova Hedwigia Beihelf, 106,361–377 Potapova, M., & Charles, D. F. (2003). Distribution of benthic diatoms in US rivers in relation to conductivity and ionic composition. Freshwater Biology, 48, 1311–1328. Potapova, M., & Charles, D. F., 2005. Choice of Substrate inalgae-based water quality assessment. Journal of The North American Benthological Society, 24, 415–427. Potapova, M. & Charles, D.F. 2007. Diatom metrcis for monitoring eutrophication in rivers of the United States. Ecological Indicators 7: 48-70. Prygiel, J., Whitton, B. A., & Bukowska, J., 1999. Use ofalgae for monitoring rivers III. Douai: Agence de L’EauArtois-Picardie Prigiel J. & Coste M., 1999. Progress in the use of diatoms for monitoring rivers in France. Use of algale for monitoring rivers III: 165-179. Ramade F., 1984. Eléments d'Ecologie: Ecologie fondamentale. Me Graw-Hill, 397 p. Rimet F., Ector L., Cauchie H.-M. and Hoffman L., 2004. Regional distribution of Diatom assemblages in the headwater streams of Luxembourg. Hydrobiologia 520 : 105-117. Round, F. E., 1991. Diatoms in river water-monitor ingstudies. The Journal of Applied Psychology, 3,129–145. Sanchez-Saavedra, 2006 ; Sanchez-Saavedra M. D. P., 2006. The effect of cold storage on cell variability and composition of two bentc diatoms. Aquacultural Engineering. Vol. 34, N° 2 : 131-136. Schoeman, (1973) Schoeman, F.R., 1973. - A systematical and ecological study of the diatom flora of Lesotha with special reference to the water quality. Pretoria CSIR, 355 p. Schoeman, F. R., 1979. Diatoms as indicators of water quality in the upper Hennops River. Journal of the LimnologicalSociety of Southern Africa, 5,73–78. Schoeman F.R., 1976. Diatom indicator groups in the assessment of water qua1ity in the lukskei-Crocodile River System (Transvaal, Republic of South Africa). J Limnol. South. Africa., 2, 21-24. Stevenson R. J. & Pan Y., 1999. Assessing environmental conditions in rivers and streams with diatoms. In E. F. Stoermer & J. P. Smol (Eds.), The diatoms: Applications for the environmental and earth sciences (pp. 11–40).Cambridge: Cambridge University Press Tapia P. M., 2008, Diatoms as bioindicators of pollution in Mantaro River, Central Andes, Perou. International Journal of Environment and Health. Vol. 2 N° 1 : 82-91. Taurai Bere & José Galizia Tundisi, 2011. The Effects of Substrate Type on Diatom-Based Multivariate Water Quality Assessment in a Tropical River (Monjolinho), São Carlos, SP, Brazil. Water Air and Soil Pollution 216(1):391-409 · March 2011  Turoboyski L. (1973). - The indicators organisms and their ecological variability. Acta Hydrobiol., 15, 259-274. Van Dam H., Mertens A., & Sinkeldam J., 1994. A codedchecklist and ecological indicator values of freshwaterdiatoms from the Netherlands. Aquatic Ecology, 28, 117–133. Yuzao Q., Weijian H., Yumin L. and Liying W., 1998. Evaluation of Water quality of the Pearl Assemblage Index (RPId). Journal of Tropical and Subtropical Botany, 6(5): 329-335.
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Nnenna Jennifer Nze, Charles Anum Adams, Ibeawuchi Chibueze Nze, and Samuel Ato Andam-Akorful. "Trend of traffic on inland waterways of Port Harcourt urban coastal environment: a comparative safety imperative for a Ghanaian coastal regional province." International Journal of Frontiers in Engineering and Technology Research 5, no. 1 (2023): 027–50. http://dx.doi.org/10.53294/ijfetr.2023.5.1.0017.
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The purpose of the study is to compare mobility and access in Sub- Saharan Africa urban cities of Nigeria and Ghana by analysing trends and accident probabilities on the inland waterways to improve safety standards. Primary data from100 respondents through structured data and interview from boat and ferry operators were used. The responses were ranked on a four-point scale based on the selected routes’ average accident probabilities in percent: Very Safe {0-20}, Fairy Safe {21- 50}, Unsafe {51- 80}, and Very Unsafe {81- 100}. Secondary data from the National Inland Waterways Authority (NIWA) and Ghana Maritime Authority (GMA) and the Volta Lake Transport Company (VLTC) were subjected to probability, percentage and trend analysis. Results indicate that in the Niger delta for every journey there is approximately 59% likelihood of fatal accident; while on the Volta Lake there is a likelihood of 7% fatal accident occurrence. The trend of traffic was high in the Niger delta noticeably in the routes of Akwa- Ibom. Cross Rivers and Rivers State. The Volta Lake recorded high traffic volumes on the routes of Yeji,Tapa Abo and Bidi on market days while on non-market days, Makango. Kwamekrom and Kpechu had high passenger volumes. Estimated annual passenger traffic on the Niger delta routes outweighed that on the Volta Lake routes on a ratio of 4:1. Safety analysis further reveals that the water ways of Port Harcourt in Rivers state were unsafe for travel while the water ways of the Volta Lake were relatively safe as revealed by the average probability ratio of 8:1 in comparative terms. The log linear regression analysis reveals a price elasticity of demand for boat transport of 1.00 and 0.97 for the selected route of Port Harcourt Nigeria and Volta Lake, Ghana respectively. It further supports the fact that more passengers were responsive to travel by waterways in Nigeria than Ghana. The study concludes that waterways of Niger delta basin have high risk indices and likelihood of accident occurrence than the Volta basin; and recommends that VLTC and NIWA should invest optimally and partner with the private sector to enforce and regulate the waterways operations so as to increase safety and mobility of users of the waterways.
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Arum, Putri Diah Pandan, Suminah Suminah, and Bekti Wahyu Utami. "PERSEPSI KOMUNITAS PEMUDA TANI TERHADAP UPAYA KONSERVASI SUMBER DAYA AIR DI WILAYAH DAS CISADANE HULU DESA PASIR BUNCIR KECAMATAN CARINGIN KABUPATEN BOGOR." AGRITEXTS: Journal of Agricultural Extension 42, no. 2 (2020): 146. http://dx.doi.org/10.20961/agritexts.v42i2.43317.
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<p>This study examines internal and external factors of youth farmers community perception, examines the perception of youth community towards conservation of water resources, and to analyse the influence between the internal and external factors of the youth farmers community and the perception of the youth farmers community towards the conservation of water resources. The research location was chosen purposely in Pasir Buncir Village, Caringin Sub-district, Bogor Regency which is a village located in the Upper Cisadane River Basin of Penggerak Cisadane Hulu dan Lingkungan Hidup (PACING community center). Census sampling is</p><p>34 members of PACING community. This research use multiple linear regression as an anlysis tools. The results showed that: (1) factors affecting perceptions such as non formal education are high, revenue is very low, experience is high, government agencies that play a role in socialization and assistance are Badan Pengelola DAS (BPDAS) and Dinas Kehutanan, four government agencies play a role in supervision , opinion leader is considered influential but passive, the existence of privatization is quite bad, and organizational culture is very good in mission implementation, consistency and member involvement, while adaptability is just good (2) perception of member of PACING community toward conservation effort is good, (3) factors that can influence perception of youth community significantly only non formal education factor, experience and organization culture, while other factors such as revenue, government role, opinion leader, impact of privatization, has no significant effect.</p>
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Kalacska, Margaret, Oliver Lucanus, Leandro Sousa, Thiago Vieira, and Juan Arroyo-Mora. "Freshwater Fish Habitat Complexity Mapping Using Above and Underwater Structure-From-Motion Photogrammetry." Remote Sensing 10, no. 12 (2018): 1912. http://dx.doi.org/10.3390/rs10121912.
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Substrate complexity is strongly related to biodiversity in aquatic habitats. We illustrate a novel framework, based on Structure-from-Motion photogrammetry (SfM) and Multi-View Stereo (MVS) photogrammetry, to quantify habitat complexity in freshwater ecosystems from Unmanned Aerial Vehicle (UAV) and underwater photography. We analysed sites in the Xingu river basin, Brazil, to reconstruct the 3D structure of the substrate and identify and map habitat classes important for maintaining fish assemblage biodiversity. From the digital models we calculated habitat complexity metrics including rugosity, slope and 3D fractal dimension. The UAV based SfM-MVS products were generated at a ground sampling distance (GSD) of 1.20–2.38 cm while the underwater photography produced a GSD of 1 mm. Our results show how these products provide spatially explicit complexity metrics, which are more comprehensive than conventional arbitrary cross sections. Shallow neural network classification of SfM-MVS products of substrate exposed in the dry season resulted in high accuracies across classes. UAV and underwater SfM-MVS is robust for quantifying freshwater habitat classes and complexity and should be chosen whenever possible over conventional methods (e.g., chain-and-tape) because of the repeatability, scalability and multi-dimensional nature of the products. The SfM-MVS products can be used to identify high priority freshwater sectors for conservation, species occurrences and diversity studies to provide a broader indication for overall fish species diversity and provide repeatability for monitoring change over time.
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Rangkuti, Nurhadi. "TELUK CENGAL : LOKASI PELABUHAN SRIWIJAYA?" Berkala Arkeologi 37, no. 2 (2017): 125–40. http://dx.doi.org/10.30883/jba.v37i2.206.
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Archaeological researches in southeast coast of Sumatra find archaeological prove of Srivijaya era (7-13 AD). Settlement sites located along tidal swamp rivers near shoreline. Srivijaya communities lived on house on stilts from wood on the wetlands. The artifacts came from aboard, eg. Chinese ceramics, beads from India and glasses from Persian found with local artifacts. Also found boats of Southeast Asia tradition use sewn plank and lashed-lug technique. These artifacts represent maritime activities in southeast coast of Sumatra. Estimated southeast coast of Sumatra, which facing Strait of Bangka, is an archaeological settlement area of Srivijaya and also pre Srivijaya periods. This one have the harbour and the port. This paper tried to identify one of the archaeological settlement area which estimated as an entreport of Srivijaya period. This area located in Bay of Cengal, District of Ogan Komering Ilir, Province of South Sumatra. Remains of activity area concentrated in Lumpur River basin and empties into Java Sea. Identification an archaeological settlement area in Bay of Cengal based on archeological data analysis, textual and maps resources, environment and position of Bay of Cengal in global maritime networks of SrivijayaPenelitian arkeologi di pesisir tenggara Sumatra menemukan bukti-bukti arkeologis yang sezaman dengan berkembangnya Sriwijaya di Sumatra (7-13 M). Situs-situs hunian mengelompok di tepi aliran sungai rawa pasang surut. Situs-situs tersebut berada di hilir sungai yang lokasinya relatif dekat dengan garis pantai sekarang. Penduduk masa Sriwijaya tinggal pada rumah-rumah panggung bertiang kayu di lahan basah. Artefak-artefak yang ditemukan sebagian besar berasal dari luar negeri, seperti keramik Cina, manik-manik dari India dan kaca-kaca dari Persia dijumpai bersama dengan barang-barang lokal, seperti barang-barang dari tembikar. Ditemukan pula perahu-perahu kuna tipe Asia Tenggara berupa perahu kayu yang dibuat dengan teknik papan ikat (sewn plank) dengan menggunakan tali ijuk dan juga menggunakan pasak kayu. Bukti-bukti arkeologis tersebut menunjukan adanya aktivitas kemaritiman di pantai tenggara Sumatra. Diperkirakan pantai tenggara Sumatra yang berhadapan dengan Selat Bangka dan Laut Jawa merupakan kawasan okupasi masa Sriwijaya dan masa sebelumnya yang dilengkapi bandar pelabuhan. Tulisan ini berupaya mengidentifikasi salah satu kawasan situs di pantai tenggara Sumatra yang diperkirakan sebagai permukiman dan bandar pelabuhan masa Sriwijaya. Kawasan itu berada di Teluk Cengal yang terdapat di pantai timur Kabupaten Ogan Komering Ilir, Provinsi Sumatera Selatan. Tinggalan arkeologis terkosentrasi di daerah aliran Sungai Lumpur yang bermuara di Laut Jawa. Upaya mengidentifikasi kawasan situs di Teluk Cengal dilakukan berdasarkan analisis data arkeologi, sumber tertulis dan peta, keadaan lingkungan dan posisi Teluk Cengal dalam jaringan pelayaran maritim global masa Sriwijaya
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Onda, Chihaya, Tetsuya Sumi, and Tsuyoshi Asahi. "Planning and Analysis of Sedimentation Countermeasures in Hydropower Dams Considering Properties of Reservoir Sedimentation." Journal of Disaster Research 13, no. 4 (2018): 702–8. http://dx.doi.org/10.20965/jdr.2018.p0702.
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Sedimentation in hydropower reservoirs is one of the most important problems facing power generation. Many of the reservoirs our company’s dams, built in the postwar reconstruction period, have been storing up sedimentation for decades. The percentage of sedimentation is now considerable, about 9%, because of a combination of a high degree of sediment production and the river flow regime. We have been trying to excavate the sedimentation from the reservoirs to avoid aggradations of upstream riverbeds and to eliminate obstacles to intake and outlet functions. Considering sediment properties, we have carried out representative five different ways of managing reservoir sediment. At the Sakuma dam, which is comparatively large, provisional transporting inside the reservoir is the main countermeasure, but radical management will be required in the near future. At the Futatsuno dam and Taki dam, which are medium-sized, the current volume of sedimentation excavation is not sufficient to maintain the size of the reservoir, due to flow sedimentation. Sediment routing methods, such as bypassing, will therefore be urgently planned. At the Setoishi and Yambara dams, the testing of sediment sluicing or hydro-suction sediment removal systems has already started. Regarding sedimentation sluicing, we have studied the feasibility of sediment bypass tunnels and gated outlets in the dam reservoir that is unsuitable for sluicing with the existing spillway. We found that gated outlet will be effective. Although there are no quick remedies that can reduce reservoir sedimentation dramatically, there are some methods that may be suitable, considering the size, life and basin of each reservoir. Not only the technical feasibility, but also the economic advantages and ecological acceptability should be considered. To sustain reservoirs and hydropower, sedimentation should be managed effectively and adaptively, based on the specific conditions of each reservoir.
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Ангеловская, Людмила Владимировна, and Татьяна Степановна Канева. "A New Source for the Study of Ust-Tsilma Bylinas (Russian Heroic Epics): The 1975 Recording of Ivan Ivanovich Chuprov." ТРАДИЦИОННАЯ КУЛЬТУРА, no. 4 (November 25, 2020): 54–71. http://dx.doi.org/10.26158/tk.2020.21.4.005.
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Данная публикация знакомит с новыми источниками изучения эпической традиции Усть-Цилемского района Республики Коми (бассейн реки Печоры). Это магнитофонные записи двух былин, полученные Фольклорным архивом Сыктывкарского государственного университета им. Питирима Сорокина в конце 2018 г. Былины «Добрыня Никитич и Алеша Попович» (365 стихов) и «Ставр Годинович» (фрагмент, 62 стиха) были исполнены жителем села Усть-Цильма, 83-летним Иваном Ивановичем Чупровым (1892-1983), по просьбе его внучки Татьяны Петряшевой (Татьяны Михайловны Котельниковой), запись была сделана ею в 1975 г. Введение этих материалов в научный оборот чрезвычайно актуально, поскольку к настоящему времени изданы практически все выявленные исследователями записи былин Печоры, а новые материалы позволят дополнить и список сказителей, и базу текстов двух сюжетов для сравнительного изучения. В сопроводительной статье представлена история получения материалов, сведения о сказителе и комментарий к обоим произведениям, явившийся результатом сравнительного анализа с другими печорскими вариантами. Авторами были выделены наиболее заметные отличия на сюжетно-мотивном уровне и редкие и уникальные поэтические детали. Текстовые расшифровки звукозаписей публикуются с нотировками, выполненными Е. А. Дороховой. This publication introduces a new source for studying the epic tradition of the Ust-Tsilma District of the Komi Republic (Pechora River Basin). This is the tape recording of two bylinas obtained by the Folklore Archive of the Pitirim Sorokin Syktyvkar State University at the end of 2018. The bylinas “Dobrynya Nikitich and Alyosha Popovich” (365 verses) and “Stavr Godinovich” (fragment, 62 verses) were performed by a resident of Ust-Tsilma Village, 83-year-old Ivan Ivanovich Chuprov (1892-1983) at the request of his granddaughter Tatyana Petryasheva (Tatyana Mikhailovna Kotelnikova). She made the recording in 1975. The introduction of this material into scientific circulation is relevant due to the fact that by now almost all known records of Pechora bylinas identified by researchers have been published, and the new material will add to the corpus of texts of the two stories, making them available for comparative study. The article presents the history of obtaining these recordings, information about the storyteller, and commentary on both works based on comparison with other Pechora variants, as a result of which the most noticeable differences at the plot-motive level and in unique poetic details are highlighted. Text transcripts of the audio recordings are appended, with commentary by E. A. Dorokhova.
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Arkelova, Marzhanat R., Zurab T. Gogushev, Ismail A. Bittirov, Kerim Kh Bolatchiev, and Anatoly M. Bittirov. "Ecosystemic epidemiological, epizootological, and sanitary-hygienic assessment of human and animal echinococcosis in the North Caucasus region." Hygiene and sanitation 102, no. 6 (2023): 556–60. http://dx.doi.org/10.47470/0016-9900-2023-102-6-556-560.
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Introduction. Echinococcosis in animals and humans is a planetary problemю One of those zoonoses have acquired the status of epidemiological and sanitary-hygienic risks for the health in various social groups of the population and animals of more than 80 species.
 The purpose of the work is an ecosystemic epizootological, epidemiological, and sanitary-hygienic assessment of animal and human echinococcosis in Karachay-Cherkessia.
 Materials and methods. The studies were carried out in 2014–2022. The objects of study were the intestines of eighteen dog corpses slaughtered in compliance with the International Rules for Humane Treatment of Animals (2012), and the liver and lungs of 150 slaughtered sheep. Monitoring of echinococcosis in dogs and sheep was carried out by the method of complete helminthological dissection of organs and tissues according to K.I. Scriabin (1928). The number of taeniid-type eggs in the faeces of dogs and in 500 water samples of the basin of the river Kuban was determined according to the guidelines of Temporary norms and rules (1986). Data on the incidence of cystic echinococcosis in the population are summarized on the base of a comparative analysis of quarterly and annual reports of the sanitary medical services in 7 subjects of the North Caucasus Federal District with the materials of the State reports of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing of Russia.
 Results. The index of occurrence of invasion of the cystic form of echinococcus in the liver, lungs, and spleen in sheep in the planar zone was 18%, in the foothill zone – 24%, in the mountain zone – 28% (on average, about 25%). Transparent cysts of echinococcus extracted from the liver, lungs, and other organs of sheep contained protoscolexes in 100% of the samples, which indicates the likelihood of natural foci involving dogs and wild predators in the region, violations of the terms of deworming of priotary dogs, lack of sanitary and preventive work among the population. The region belongs to the group of subjects with low rates of zoonoses due to effective anti-epidemic measures. At the same time, the natural reservoirs of Karachay-Cherkessia are natural biotopes of taeniosis, where the contamination of water samples with taeniid eggs ranges from 11 to 37%.
 Limitations. The study is limited only by the analysis of statistical data on human echinococcosis in Karachay-Cherkessia and other subjects of the North Caucasus Federal District; other densely populated regions of the Russian Federation have not been studied and not affected.
 Conclusion. According to the epidemic situation in terms of echinococcosis in the population, the Karachay-Cherkess Republic can be attributed to relatively prosperous regions of Russia, but to the zone of epidemiological risk, since there is an increase in the number of dogs with tape echinococcosis and sheep infected with fertile cysts. Sanitary and hygienic pollution of the river Kuban and its tributaries with eggs of cestodes is a threat to the spread of echinococcosis among animals and humans.
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Lavrinenko, Olga Vasilievna, Igor Anatolyevich Lavrinenko, and Ksenia Igorevna Simonova. "State of island spruce forests in the western part of the Bolshezemelskaya tundra after 23 years." Environmental Dynamics and Global Climate Change 15, no. 1 (2024): 30–67. http://dx.doi.org/10.18822/edgcc629471.
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Modern climate warming, which began in the 1970s, has been observed throughout the Arctic including its Russian part [Доклад…, 2023; Druckenmiller et al., 2021]. It is accompanied by a large number of papers by Russian and foreign scientists on the forest boundary advancement to the north, and its upper boundary in the mountains – up the slopes [Шиятов и др., 2007, Harsch et al., 2009; Bolotov et.al., 2012; Grigor'ev et.al., 2013, 2019; Moiseev et.al., 2019; Shiyatov et al., 2020; Timofeev et.al., 2021; Dial et al., 2022; Hansson, 2022, etc.]. Climate change rate is high in the East European sector of the Arctic: over the last 35 years the average annual air temperature increase has reached +0.8°C/10 years [Malkova et.al., 2021], the length of the growing season has increased by an average of 2 weeks and the amount of heat accumulated during this period has increased by an average of 85°C [Lavrinenko et al., 2022]. The northern forest boundary (timberline) in East European Russia is formed by Picea obovata and runs at N 67°30ʹ-67°10ʹ. In the Bolshezemelskaya Tundra, spruce is found rather far north of the forest boundary and even north of N 68°. Spruce islands have been preserved here since the Holocene in refugia – sites with favorable microclimatic and soil conditions. Relict spruce islands are groups of closely spaced, thin-stemmed trees occupying upland landform elements on sandy outcrops of watersheds. Skirt-shaped growth trees are united by a common root system and appear to be clones formed by vegetative propagation [Lavrinenko, Lavrinenko, 2004]. In the framework of the international SPICE project, eight spruce islands were discovered and studied 8 spruce islands at latitude N 67°54'-67°56' (Fig. 1). Complete relevés were carried out within the boundaries of the 5 islands. Species abundance was estimated using the Brown-Blanquet scale [Becking, 1957]. The height of the tallest trunks was measured with a measuring tape and their diameter at the trunk base (in island E2 at a height of 50 cm) – with a caliper. In 2000, a spruce island was described at the northernmost site (N 68°17') near Cape Bolvansky Nos on the coast of the Pechora Bay of the Barents Sea (Fig. 1). The results of the spruce islands structure and cenoflora study have been published [Lavrinenko, Lavrinenko, 2003]. This data provided an opportunity to trace the changes of the islands 23 years later. All spruce islands in the Ortina Basin were resurveyed between 20 and 30 July 2023. The study included tree morphometric measurements, geobotanical relevés and comparative landscape photography. The surveys on the islet at Cape Bolvansky Nos were carried out in 2000, 2014 and 2020 and included plant community relevés and photography and height measurements of the 6 tallest living spruce tops; photos were taken during a short visit in 2017. Comparative analysis of the spruce islands composition and structure after almost a quarter of a century have shown: 1) In the Ortina River basin, in relict spruce islands on watersheds (E1, E4-E8), mean tree height has increased by 1.1-1.9 m and mean diameter – by 1.9-3.0 cm, i.e. mean height growth was 4.3-8.3 cm/year and radial growth was 0.41-0.65 mm/year. On a spruce island in the Ortina River valley (E2) with more favorable microclimatic conditions, these values were significantly higher – trees have grown on an average 2.8 m, diameter – 3.7 cm, i.e. height growth was 12.2 cm/year, radial growth – 0.8 mm/year (Table 1, Fig. 2а and б). In 2000 spruce island E3 was located on a sandy mound in the center of a sandy outcrop. By 2023 the mound has been almost completely destroyed by winds, the spruce looked like dying off and most likely it will disappear after some time (Fig. 9). 2) The shape of the tree crowns has changed. In 2000, spruce trees predominantly had "skirts" of well-developed lower branches. The upper part of the trees could have a cylindrical crown or the trunk could be partially devoid of branches with needles only at the top. By 2023, the crown of the most trees has become conical or narrow pyramidal with well-developed lower branches and green branches all over the trunk. On the E2 spruce island in the valley, the cone-shaped crowns of the trees have become lusher. 3) On all islands spruce has been spreading vegetatively by rooting lower branches and subsequently changing their growth from plagiotropic to orthotropic. This process has been especially active on the slopes of southern exposition. As a result, the area of the islands has slightly increased. Despite the abundance of both male strobiles and mixed-aged female cones, no undergrowth or freestanding young spruce trees were found in the surroundings. This indicates the absence of reproduction by seed for 23 years. The results prove the earlier suggestion that the northward advance of forests in watersheds is limited by the lack of quality seeds for sexual reproduction [Andreev, 1954; Norin, 1958; Surso, Barzut, 2010]. The earlier assumption that spruce islands could become a springboard for the spruce introduction into tundra communities under climate warming [Lavrinenko, Lavrinenko, 1999, 2004] is currently not confirmed. 4) Comparative photos taken from the same angles in 2000 and 23 years later are shown for all spruce islands (Fig. 3-8, 10). They display a significant tree state improvement. 5) At Cape Bolvansky Nos in the northernmost spruce islet (N 68°17'), both a surge (in 2014) and a decline in spruce vitality have been recorded over the past 20-year period. There was no increase in island area observed, in 2020 the condition of the spruce was depressed and close to 2000 (Fig. 11). 6) The dwarf shrub green-mossy spruce islands cenoflora was characterised by stability. Changes in the species composition were due to single, predominantly cryptogamous plants (Table 2). Key species, in addition to Picea obovata, are: Betula pubescens subsp. tortuosa, dwarf shrubs Empetrum hermaphroditum, Vaccinium vitis-idaea, Linnaea borealis, Arctous alpina, bryophytes Pleurozium schreberi, Hylocomium splendens and Ptilidium ciliare. Juniperus sibirica and Betula nana were often found in the shrub layer. The most active permanent herbaceous plant was Festuca ovina (Tables 1 and 2). 7) Landscape photos show the "greening" of surrounding tundra communities in watersheds and stream valleys in the Ortina River Basin due to climate warming. On watersheds, Betula pubescens subsp. tortuosa has actively introduced into tundra communities, and juveniles and young trees have gained straight trunks from the base of the tree (Fig. 13). In the river valley and its tributaries, the area and height of bushes of Juniperus sibirica, shrubby willows and especially Alnus fruticosa have increased (Fig. 8а and б, 14). 8) The current position of the island spruce sparse forests` northern boundary in the Ortina River valley recorded on the satellite image is at latitude N 67°53ʹ (Fig. 15) and has not changed over the last 20 years. The reason appears to be the lack of good quality seed for sexual reproduction. Monitoring studies could make it possible to trace the time when the boundaries of spruce sparse forests and spruce islands will close up in case of further possible climate warming. The distance between them is now quite small – 3-6 kilometers
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Widodo, F. Heru, and Tukiyat Tukiyat. "MANFAAT EKONOMIS DISEMINASI TEKNOLOGI MODIFIKASI CUACA DI DAERAH ALIRAN SUNGAI CITARUM." Jurnal Sains & Teknologi Modifikasi Cuaca 11, no. 2 (2010): 21. http://dx.doi.org/10.29122/jstmc.v11i2.2182.
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Penelitian ini bertujuan untuk menghitung B/C ratio dari pelaksanaan Teknologi Modifikasi Cuaca melalui parameter-parameter nilai biaya produksi, banyaknya air yang dibutuhkan untuk pengairan, harga gabah per ton, produksi gabah per ha, sehingga nilai B/C dari pelaksanaan TMC sebagai nilai riil yang sudah bisa dipertangungjawabkan kepada publik. Secara khusus penelitian ini bertujuan menghitung nilai ekonomis penerapan Teknologi Modifikasi Cuaca di Daerah Aliran Sungai (DAS) Citarum Jawa Barat dari aspek PLTA dan pertanian. Data penelitian berupa data sekunder dari hasil kegiatan TMC di Das Citarum tahun 2007. Adapun data yang dibutuhkan dalam penulisan paper adalah data aliran Waduk (DMA, Inflow dan Outflow) selama kegiatan TMC berlangsung antara lain data: tambahan potensi energi listrik; besarnya volume air yang digunakan untuk menghasilkan 1 kWh; harga listrik per kWh; estimasi hasil produksi padi per hektar; biaya produksi pertanian per ha per tanam; estimasi besarnya kebutuhan air pertanian per hektar per panen; harga gabah kering giling per kg; biaya pelaksanaan TMC. Teknik pengumpulan data melalui survei lapangan dan wawancara mendalam dengan kelompok tani di daerah Subang, Karawang, dan Indramayu dengan didukung studi literatur yang terkait dengan informasi mengenai aspek ekonomi Teknologi Mudifikasi cuaca. Hasil penelitian menunjukkan bahwa jumlah tambahan air kegiatan TMC di Das Citarum tahun 2007 sebanyak 716,92 juta m3. Dengan tambahan air tersebut dapat menghasilkan jumlah kWh listrik sebanyak 447.284.99 kWh. Dari tambahan air tersebut dapat memberikan manfaat ekonomi pada sektor PLTA sebesar Rp. 85.252.520.810,- dan sektor pertanian sebesar Rp. 610.643.840.116,- Manfaat ekonomi secara total kegiatan TMC sebesar Rp. 695.896.360.926,- Dari hasil tersebut secara ekonomis besarnya nilai B/C rasio sebesar 233:1. Hal ini berarti setiap pengeluaran sebesar Rp.1,- maka akan dapat diperoleh pendapatan sebesar Rp. 233,-This study aimed to calculate benefit cost ratio of the implementation of WeatherModification Technology and to learn about production costs, the amount of waterneeded for irrigation, the price of grain per ton, the production of grain per hectare,so the value of B / C of the implementation of the TMC as a real value which canresponsibility to the public. Specifically this study aims to calculate the economic value the application of the weather modification technology on the Citarum River Basin of West Java from the aspects of hydropower and agriculture. The research data in the form of secondary data that are time-series in 2007. The research data in the formof secondary data from the TMC in Das Citarum activities in 2007. The data requiredfor the writing of this paper include: data stream reservoir (DMA, Inflow and Outflow)for TMC events take place, among others: Additional data potential of electric energy;cost data for agricultural production per hectare per cropping; data size of the volumeof water used to produce 1 kWh; electricity prices per kWh; data estimation of riceproduction per hectare; estimate the amount of agricultural water demand per hectareper harvest, the price of milled rice per kg dry; cost of operation TMC. Data collectingtechniques through interviews with farmers groups in the area of Subang, Karawang,Indramayu supported by studies in the literature after the focus of research relatedto information regarding the economic aspects of technology Mudifikasi weather. Theresults showed that the additional amount of water activity of TMC in Das Citarum2007 as many as 716.92 million m3. With the addition of water during TMC activitiescan generate as much electricity as the number of kWh 447.284.99. Benefit of TMC inhydropower sector Rp. 85,252,520,810 and benefits in the agricultural sector Rp. 610643 840 116. Total economic benefits of TMC activity Rp. 695 896 360 926, - The result analysis B/C ratio of 233:1. This means that every expenditure amounting to Rp1, - you will get an income of Rp. 233
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Dr., Karbhari Vavanrao Divte. "Gross Study of Built Irrigation Potential in Tapi River Basin." March 30, 2018. https://doi.org/10.5281/zenodo.6969283.
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Among the five river basins of Maharashtra, Tapi river basin is one of the widest river basins. The government has tried to use the water available in this basin. It is a diverse basin. An attempt has been made to study the catchment area and water use.
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Pachore, Akshay, Nirav Agrawal, Nurmuhammadkhon Omonov, et al. "Evaluation of the impact of anthropogenic storage on the hydrological drought propagation in two contrasting semi-arid river basins." Journal of Water and Climate Change, June 25, 2024. http://dx.doi.org/10.2166/wcc.2024.105.
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ABSTRACT This study quantitatively assessed the impacts of reservoirs on drought propagation in two semi-arid river basins: the Tapi basin with the Ukai reservoir in India (South Asia) and the Chirchik basin with the Charvak reservoir in Uzbekistan (Central Asia). Meteorological and hydrological droughts were characterized and analyzed using the Standardized Precipitation Index (SPI) and the Standardized Streamflow Index (SSI). Both river basins, especially in upstream reservoir areas, exhibited a notable correlation between hydrological drought (HD) and meteorological drought (MD). Reservoir operations resulted in lower MD–HD correlation in downstream areas for shorter SPI timescales, attributed to the influence of reservoir regulation. Hit score-based evaluations indicated reservoir operation-induced changes in drought propagation for both river basins. Due to the contrasting characteristics, the river basins showed a significant variation in the monthly lag time values, with distinct influences from monsoon (Tapi) and snow melting (Chirchik). In the Chirchik basin, the snowmelt season (April–September) had a shorter propagation time from MD to HD (average DPT: 5 months) and a longer time in the accumulation period (October–March; average DPT: 6 months). In the Tapi basin, influenced by the monsoon, the propagation time was shorter (June–September; average DPT: 4 months) and longer in the pre-monsoon period (average DPT: 6 months).
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Harshad, M. Rajgor, D. Patel Ashutosh, A. Patel Vikrant, R. Patel Ajay, and N. Kansara Jash. "Morphometric Analysis of the Ver Watershed in Gujarat's Tapi River Basin Using Spatial Information Technology." May 16, 2023. https://doi.org/10.5281/zenodo.8281048.
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Other morphometric parameters of river basin were also determined, along with its linear and aerial dimensions. It is basin of fifth order with a drainage pattern that ranges from subdendritic to dendritic. The basin in question has a significant vegetative cover and a very permeable subsurface, as indicated by low drainage density number that was measured. The strong elongation, high permeability, and homogeneity of geological materials in basin are all suggested by high circularity ratio value. The study's conclusions will enable locals to make better use of basin's resources going forward.
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Baria, Paresha M., and S. M. Yadav. "Investigating extreme rainfall non-stationarity of upper Tapi river basin, India." ISH Journal of Hydraulic Engineering, June 11, 2019, 1–9. http://dx.doi.org/10.1080/09715010.2019.1627679.
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Chandole, Vishal, Geeta S. Joshi, and Vijay Kumar Srivastava. "Flood risk mapping under changing climate in Lower Tapi river basin, India." Stochastic Environmental Research and Risk Assessment, March 4, 2024. http://dx.doi.org/10.1007/s00477-024-02677-4.
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Hoomgratok, Saimai, Ketvara Sittichok, and Jutithep Vongphet. "Impacts of Climate Change on Streamflow in Tapi River Basin Using SWAT Model." Journal of King Mongkut's University of Technology North Bangkok 33, no. 3 (2023). http://dx.doi.org/10.14416/j.kmutnb.2023.07.005.
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