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Journal articles on the topic 'Physiographic parameters'

Author: Grafiati

Published: 24 April 2022

Last updated: 30 July 2025

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1

Baiteriakova, N. Yu, and O. Z. Baiteriakov. "WORD-FORMATION PARAMETERS OF ENGLISH PHYSIOGRAPHIC VOCABULARY." "Scientific notes of V. I. Vernadsky Taurida National University", Series: "Philology. Journalism" 1, no. 2 (2022): 82–86. http://dx.doi.org/10.32838/2710-4656/2022.2-1/14.

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Kuana, Louise Akemi, Arlan Scortegagna Almeida, Emílio Graciliano Ferreira Mercuri, and Steffen Manfred Noe. "Regionalization of GR4J model parameters for river flow prediction in Paraná, Brazil." Hydrology and Earth System Sciences 28, no. 14 (2024): 3367–90. http://dx.doi.org/10.5194/hess-28-3367-2024.

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Abstract. Regionalization methods dependent on hydrological models comprise techniques for transferring calibrated parameters in instrumented watersheds (donor basins) to non-instrumented watersheds (target basins). There is a lack of flow regionalization studies in regions with humid subtropical and hot temperate climates, and one of the main novelties of this research is to assess the regionalization of low flows in Paraná in the south of Brazil. In addition to filling this gap, this research presents innovative artificial-intelligence techniques for transferring parameters from hydrological

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Ogunleye, Kayode Samuel, Oluwarotimi Godwin Jide, Augustus Oludotun Akinmayowa Ilori, et al. "INFLUENCE OF PHYSIOGRAPHIC POSITIONS AND NUTRIENT SOURCES ON LEAF YIELD AND QUALITY OF Telfairia occidentalis." FUOYE JOURNAL OF AGRICULTURE AND HUMAN ECOLOGY 6, no. 2 (2024): 108–24. https://doi.org/10.62923/fuojahe.v6i2.231.

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Abstract Physiographic position has impact on the yield and quality of crops. The effects of physiographic positions and nutrient sources on the yield and quality of fluted pumpkin (Telfairia occidentalis) were studied at the Teaching and Research Farms, Federal University Oye-Ekiti (T&RF FUOYE) in 2019 and 2020 growing seasons. The treatments were main plots of upper slope (US) and valley bottom (VB) physiographical positions and sub-plots of 60 kg N ha -1 of sole urea (U), Tithonia diversifolia plant biomass (TPB), their combination (U+TPB) and Control. Fluted pumpkin seedlings were tran

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Anjum, Noshin, and Md Motaleb Hossain. "Sensitivity Analysis of the Physiographic Parameters of the Teesta River Basin by Hydrological Modelling." Asian Journal of Geographical Research 7, no. 3 (2024): 1–16. http://dx.doi.org/10.9734/ajgr/2024/v7i3238.

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Estimating the discharge from a rainfall event is a challenging task because of a number of affecting elements. A multitude of physiographic factors are essential for both channel and surface flow. In a developing nation like Bangladesh, discharge measurement is critical for forecasting floods, managing land, measuring sediment, nutrients and promoting sustainable development. It is possible to measure the discharge and physiographic parameter using a hydrological model. Using a semi-distributed model Soil and water Assessment Tool (SWAT), the discharge of the Teesta River Basin, one of the mo

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J. Debbarma. "Grain size characteristics of unconsolidated soil in the humid tropical region of Tripura." Indian Journal of Soil Conservation 52, no. 1 (2025): 40–45. https://doi.org/10.59797/ijsc.v52.i1.148.

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Grain size characteristics form an important aspect of study in hydrological and soil sciences. Grain size refers to the single grain dimension of sediment or other grain particulate. The size of unconsolidated soil may range from boulders to gravel, as well as sand, silt and clay. Grain size analysis helps in determining the hydrodynamic state. It is also vital in determination of permeability of soil in an area. Therefore, grain size distribution is one of the textural properties of soil that affect the magnitude and direction of permeability. The present study intends to explore the charact

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Guin, Jayashree, and Ankan Das. "Variable Geographical Situations with subsequent Horticultural Diversities across the State of West Bengal." RESEARCH REVIEW International Journal of Multidisciplinary 4, no. 3 (2019): 929–34. https://doi.org/10.5281/zenodo.2619388.

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The state of West Bengal has huge geographical diversities. With respect to the geographical classification the entire bulk area of the state, thus can be divided into many physiographic regions. Each physiographic region has its own distinguished features. The climate, the weather pattern, the soil type and other abiotic factors associated are quiet different in these regions. Therefore as the non living parameters are variable, the change or differences with respect to biotic factors, especially the plants are also very much obvious. These distinguished physiographic regions with different s

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Kruk, Edyta, and Wioletta Fudała. "Concept of Soil Moisture Ratio for Determining the Spatial Distribution of Soil Moisture Using Physiographic Parameters of a Basin and Artificial Neural Networks (ANNs)." Land 10, no. 7 (2021): 766. http://dx.doi.org/10.3390/land10070766.

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The results of investigations on shaping the soil moisture ratio in the mountain basin of the Mątny stream located in the Gorce region, Poland, are presented. A soil moisture ratio was defined as a ratio of soil moisture in a given point in a basin to the one located in a base point located on a watershed. Investigations were carried out, using a TDR device, for 379 measuring points located in an irregular network, in the 0–25 cm soil layer. Values of the soil moisture ratio fluctuated between 0.75 and 1.85. Based on measurements, an artificial neural network (ANN) model of the MLP type was co

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Guizani, Douraied, Erika Budayné Bódi, János Tamás, and Attila Nagy. "Characterisation of basic water balance parameters of Debrecen." Acta Agraria Debreceniensis, no. 1 (May 26, 2022): 35–40. http://dx.doi.org/10.34101/actaagrar/1/10427.

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This work aims to develop a hydrological modelling tool to help managers make the right decisions for Debrecen, in the face of water scarcity and the increase in agricultural and domestic needs over time. The methodology was based on the creation of a climatic database, at monthly time steps, from 2016 to 2019, and cartographic (land use, digital elevation model, and hydrological network). As a next step, the watershed was delimitated into sub-basins to determine the shape and the physiographic characteristics of sub-watersheds. Finally, a hydrological study was prepared by calculating the tim

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Sharma, Priyank J., Premlal Patel, and Vinayakam Jothiprakash. "Assessment of variability in runoff coefficients and their linkages with physiographic and climatic characteristics of two contrasting catchments." Journal of Water and Climate Change 10, no. 3 (2018): 464–83. http://dx.doi.org/10.2166/wcc.2018.139.

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Abstract In the present study, long-term spatio-temporal variability in runoff coefficient (C) for different drainage areas of Upper Tapi basin, India, is analysed. The Upper Tapi basin is divided into two sub-catchments, Burhanpur and Purna, which are contrasting in nature in terms of their physiographic and climatic characteristics. The digital filter algorithm has been used to separate the base flow from observed streamflow for respective drainage areas. The sensitivity of the parameters involved in base flow separation is assessed by incorporating the hydrological and hydrogeological prope

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Shreyasi, Gupta Choudhury, and Banerjee Tapati. "Land Resource Inventory: A Primary Tool for Sustainable Integrated Watershed Management." International Journal of Environmental & Agriculture Research 9, no. 2 (2023): 13–16. https://doi.org/10.5281/zenodo.7685028.

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<strong>Abstract</strong><strong>—</strong> Land, the most indispensable natural resource has been facing challenges of soil degradation, water scarcity, reduced productivity, climate change, social deterioration etc. In these consequences, the rainfed areas might get the priority to develop because of its area coverage in India and great potentiality towards crop yields increment through improved resource management practices. Rainfed areas can best be managed through integrated watershed management approach involving human intervention in manipulating natural resources for overall soci

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Peyrov, S., A. Najafi, and J. Nourizadeh. "Evaluating the effects of physiographic parameters on the road cross section in mountain forests (Case study: northern forests of Iran)." Journal of Forest Science 62, No. 1 (2016): 1–7. http://dx.doi.org/10.17221/89/2015-jfs.

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12

GARBA, Y. I., M. A. YUSUF, M. Z. KARKARNA, and D. M. MUSA. "SOIL PROPERTIES AND FERTILITY POTENTIALS FOR ARABLE CROP PRODUCTION IN THE DRYLANDS OF NORTHERN NIGERIA." FUDMA Journal of Agriculture and Agricultural Technology 10, no. 1 (2024): 83–98. http://dx.doi.org/10.33003/jaat.2024.1001.11.

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This study examined soil fertility potentials for arable crop production in parts of Northern Guinea and Sudan savanna agroecological zones of Nigeria for optimal land use. Five physiographic units were identified in four (4) local government areas each of Kano and Kaduna states and named based on the landforms characteristics as low land plains (LLP), undulating plains with group hills (UPH), gently undulating sandy plains (GUSP), extensive sandy plains (ESP) and upland plains (UP). In each of the physiographic units, fifteen surface (0 – 15cm) and subsurface (15 - 30cm) soil samples were sys

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Balaguera-Reina, Sergio A., Laura A. Brandt, Nicole D. Hernandez, Brittany M. Mason, Christopher D. Smith, and Frank J. Mazzotti. "Body condition as a descriptor of American alligator (Alligator mississippiensis) health status in the Greater Everglades, Florida, United States." PLOS ONE 18, no. 11 (2023): e0295357. http://dx.doi.org/10.1371/journal.pone.0295357.

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Body condition is used as an indicator of the degree of body fat in an animal but evidence of its actual relationship with health diagnostics (e.g., blood parameters) is usually lacking across species. In American alligators (Alligator mississippiensis), body condition has been used as a performance metric within the Greater Everglades ecosystem to provide insight on hydrological and landscape changes on alligator populations. However, there is no clear evidence that spatial body condition changes relate to different health conditions (low food intake vs sickness) and whether this link can be

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Franco-Plata, Roberto, Carlos Miranda-Vázquez, Héctor Solares-Hernández, Luis Ricardo Manzano-Solís, Khalidou M. Bâ, and José L. Expósito-Castillo. "Implementing into GIS a Tool to Automate the Calculation of Physiographic Parameters of River Basins." Open Journal of Modern Hydrology 03, no. 02 (2013): 67–74. http://dx.doi.org/10.4236/ojmh.2013.32009.

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15

Getmanec, I. A., Y. A. Serebrennikova, and P. V. Levchenko. "Problems of biodiversity conservation of birch groves of the steppe Ural zone." IOP Conference Series: Earth and Environmental Science 1010, no. 1 (2022): 012049. http://dx.doi.org/10.1088/1755-1315/1010/1/012049.

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Abstract An assessment of the taxonomic, structural, and functional biodiversity of birch groves of the steppe Ural zone which are unique phytocenoses that determine the structure of forest cover in areas with a regular lack of forest cover, is presented. Such communities play an important role in maintaining the ecological balance of the natural environment, namely in preserving biological and landscape diversity due to the formation of communities in contrasting physiographic conditions. We used the classical standard approaches of geobotany and the original methods of phytoindication of eco

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Sarkar, Deepjay, Madhura Bhattacherjee, and Devapriya Chattopadhyay. "Influence of regional environment in guiding the spatial distribution of marine bivalves along the Indian coast." Journal of the Marine Biological Association of the United Kingdom 99, no. 1 (2017): 163–77. http://dx.doi.org/10.1017/s0025315417001837.

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Tropical coastal areas are amongst the most diverse ecosystems in the world. However, there are quite a few coasts that have rarely been studied for their macro-benthic diversity. The Indian coastline presents one such gap area. Two sub-parallel coastlines of India have a wide latitudinal span (8–23°N) and strikingly different physiographic environments. While the east coast receives a high siliciclastic input from large river systems flowing to the Bay of Bengal with fluctuating salinity, the west coast has a large shelf area and high productivity of the Arabian Sea. Such difference enables u

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17

Sánchez, O., A. Rubio, A. Blanco, R. Elena, and V. Gómez. "Parametrical autoecology of beechwood stands in Castilla y León (Spain)." Forest Systems 12, no. 1 (2003): 87–109. http://dx.doi.org/10.5424/790.

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This work has been carried out applying similar methodologies to former parametric autoecological studies on Fagus sylvatica stands in other Spanish regions. The beechwood territory of Castilla y León (Spain) has been stratified in order to select 37 representative parcels for sampling. Several physiographic, climatic, edaphic and forestry parameters have been elaborated from the sampling data. The parameter analysis has allowed finding out the parametric values that def ine the central and marginal habitats for beechwood stands in Castilla y León. The multivariable statistical analysis has en

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OUABA, Mounir, and Mohamed Elmehdi SAIDI. "Contribution of morphological study to the understanding of watersheds in arid environment: A case study (Morocco)." AIMS Environmental Science 10, no. 1 (2022): 16–32. http://dx.doi.org/10.3934/environsci.2023002.

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<abstract> <p>Watershed planning is often based on the analysis of morphometric parameters, especially in poorly gauged or ungauged basins. These physiographic parameters have, in fact, a main role in water runoff. In many arid countries such as Morocco, there is a significant need for morphometric studies of watersheds to initiate integrated water resources management. For this purpose, we have carried out the watersheds delineation and morphometric analyses, using the Digital Terrain Model (DTM) and the Geographic Information System (GIS). We have applied this approach based on r

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19

P. K. Singh, Virendra Kumar, and R. C. Purohit. "Deterministic Modeling of Annual Runoff and Sediment Production Rate for Small Watersheds of Chambal Catchment." Journal of Agricultural Engineering (India) 44, no. 4 (2007): 8–15. http://dx.doi.org/10.52151/jae2007444.1293.

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Deterministic geomorphic modelling is basically a tool for prediction of hydrologic behavior of a basin. Proper scientific planning and management require detailed data to make reliable predictions. In this paper multivariate statistical techniques have been applied to develop dimensionally homogeneous and statistically optimal models for prediction of annual runoff and sediment production rate from the small watersheds of Chambal catchment. The dimensionless geomorphic and rainfall parameters have been used as independent variable in the analysis. The significant components and parameters hav

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20

Soares, Gabriel Antonio Silva, and Josiclêda Domiciano Galvíncio. "Uso do LiDAR para avaliar os padrões hídricos de bacias em áreas urbanas: Caracterização fisiográfica da bacia do Rio Beberibe, PE." Revista Brasileira de Geografia Física 13, no. 07 (2020): 3659. http://dx.doi.org/10.26848/rbgf.v13.07.p3659-3674.

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A caracterização fisiográfica, consiste no levantamento dos principais parâmetros fisiográficos de uma bacia, que podem ser extraídos de mapas, fotografias aéreas e imagens de satélite, e se apresenta como uma ferramenta útil ao planejamento e gestão dos recursos hídricos, por existir uma forte correspondência entre as características físicas de uma bacia hidrográfica e seu regime hidrológico. O presente estudo se propõe a caracterizar fisiograficamente a bacia hidrográfica do Rio Beberibe utilizando os dados do sensor LiDAR com resolução espacial de 5 m em uma escala de 1:5000, provenientes d

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SHRESTHA, Sangam, Khada Nanda DULAL, Satish BASTOLA, Hiroshi ISHIDAIRA, Futaba KAZAMA, and Kuniyoshi TAKEUCHI. "THE ASSESSMENT OF SPATIAL TRANSFERABILITY OF A DISTRIBUTED HYDROLOGICAL MODEL PARAMETERS IN DIFFERENT PHYSIOGRAPHIC REGIONS OF NEPAL." PROCEEDINGS OF HYDRAULIC ENGINEERING 51 (2007): 37–42. http://dx.doi.org/10.2208/prohe.51.37.

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Parajka, J., R. Merz, and G. Blöschl. "A comparison of regionalisation methods for catchment model parameters." Hydrology and Earth System Sciences 9, no. 3 (2005): 157–71. http://dx.doi.org/10.5194/hess-9-157-2005.

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Abstract. In this study we examine the relative performance of a range of methods for transposing catchment model parameters to ungauged catchments. We calibrate 11 parameters of a semi-distributed conceptual rainfall-runoff model to daily runoff and snow cover data of 320 Austrian catchments in the period 1987-1997 and verify the model for the period 1976-1986. We evaluate the predictive accuracy of the regionalisation methods by jack-knife cross-validation against daily runoff and snow cover data. The results indicate that two methods perform best. The first is a kriging approach where the m

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Parajka, J., R. Merz, and G. Blöschl. "A comparison of regionalisation methods for catchment model parameters." Hydrology and Earth System Sciences Discussions 2, no. 2 (2005): 509–42. http://dx.doi.org/10.5194/hessd-2-509-2005.

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Abstract. In this study we examine the relative performance of a range of methods for transposing catchment model parameters to ungauged catchments. We calibrate 11 parameters of a semi-distributed conceptual rainfall-runoff model to daily runoff and snow cover data of 320 Austrian catchments in the period 1987-1997 and verify the model for the period 1976-1986. We evaluate the predictive accuracy of the regionalisation methods by jack-knife cross-validation against daily runoff and snow cover data. The results indicate that two methods perform best. The first is a kriging approach where the m

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Laabidi, Ahmed, Abdellah El Hmaidi, Lahcen Gourari, and Mourad El ABASSI. "Apports Du Modele Numerique De Terrain Mnt A La Modelisation Du Relief Et Des Caracteristiques Physiques Du Bassin Versant Du Moyen Beht En Amont Du Barrage El Kansera (Sillon Sud Rifain, Maroc)." European Scientific Journal, ESJ 12, no. 29 (2016): 258. http://dx.doi.org/10.19044/esj.2016.v12n29p258.

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The watershed of the Beht River occupies the southwest part of the Sebou watershed with an area of 4,603.77 km2. It starts in the Causse of Middle Atlas, drains the northern edge of central Morocco and ends in the rifan south wrinkles at the level of dam El Kansera. The geographical information system (GIS) and ASTER images with a resolution of 30m have been of great use for creating thematic maps and automatic extraction of a multitude of parameters and physiographic indices of this watershed. These parameters, very characteristic, allow to assess the weight of the geomorphology on surface wa

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Pavel, Kovář, and Kubátová Šárka Dvořáková and Eliška. "Possibilities of Using the Direct Runoff Model KINFIL for a Road Network Design." Soil and Water Research 1, No. 2 (2013): 49–56. http://dx.doi.org/10.17221/6505-swr.

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The paper provides a practical implementation of the hydrological model KINFIL to be used for design&shy;ing an optimal road density system in areas where agricultural or forestry production does not play an important role. In particular, such a road system project is based on the physiographic characteristics of land. Input data for a direct runoff analysis are computed in relation to the geometric parameters of upstream sub-catchments using the method of maximum daily precipitation reduction. Computed direct runoff discharges depend mainly on soil and vegetation conditions. Besides the s

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Martínez-Acosta, Luisa, Alvaro Alberto López-Lambraño, and Alvaro López-Ramos. "Design Criteria for Planning the Agricultural Rainwater Harvesting Systems: A Review." Applied Sciences 9, no. 24 (2019): 5298. http://dx.doi.org/10.3390/app9245298.

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The growth in world population demands greater food production. Meanwhile, rainwater-harvesting systems (RWHS) have been used since ancient times to guarantee water supply for agriculture. Therefore, this research study reviews the conditions related to RWHS, focusing on rural communities. In this review, the methodologies used for rainwater harvesting (RWH) were determined, considering the characteristics for each of the hydraulic structures to guarantee runoff collection according to the basin area. Finally, the most relevant design parameters that should be considered in the planning and in

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Caissie, Daniel, and Nassir El-Jabi. "A stochastic study of floods in Canada: truncation level by region." Canadian Journal of Civil Engineering 18, no. 2 (1991): 328–30. http://dx.doi.org/10.1139/l91-038.

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The main problem in applying a partial duration series model in flood frequency analysis lies in the selection of the truncation level. From a practical point of view, it is important to have a simple and effective way of selecting this level. A truncation level study was conducted on hydrometric stations across Canada and regional equations were developed for estimating the truncation level using regression analysis. The homogeneous region was selected based on previous countrywide hydrological studies. From the hydrologic and physiographic parameters used in the regression analysis, the mean

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Blanco, A., D. Graña, R. Elena, O. Sánchez, A. Rubio, and V. Gómez. "Autoecology of beech woodstands in La Rioja (Spain)." Forest Systems 12, no. 1 (2003): 21–38. http://dx.doi.org/10.5424/785.

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In this study, a strastif ied sampling on 21 plots has been carried out on beech (Fagus sylvatica L.) stands in La Rioja (N.E. Spain). On each plot, 36 physiographic, climatic and edaphic parameters have been calculated in order to define central and marginal habitat of beech. Most of beech woodstands are located between 850 and 1650 m elevation, 600 and 1300 mm annual rainfall. According to FAO criteria, soil are classified as Cambisols and Luvisols. These soils are developed on slates, schists, sandstones and cuartzites. Although soil water holding capacities are low, there is no significant

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Blanco, A., A. Rubio, O. Sánchez, R. Elena, V. Gómez, and D. Graña. "Autoecology of chestnut (Castanea sativa Miller) in Galicia (Spain)." Forest Systems 9, no. 2 (2000): 337–62. http://dx.doi.org/10.5424/670.

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A stratified sampling on 22 plots has been carried out on chestnut (Castanea sativa Miller) stands in Galicia (Spain). Central and marginal parameters ranges have been stablished for defining physiographic, climatic and soil habitat diagrams of chetnut stands. Most stands are located between 400 and 750 m elevation, with around 1,300 mm annual rainfall. According to FAO criteria, soil are classified as distric Cambisols and distric Luvisols. Several silvicultural parameters have also been calculated. After their correlation with the ecological ones, it is concluded that the best Galician chest

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Beshentsev, Andrew N., Alexander A. Ayurzhanaev, and Bator V. Sodnomov. "CREATION OF GIS-RESOURCES FOR PHYSIOGRAPHIC ZONING OF THE TRANSBOUNDARY RUSSIAN-MONGOLIAN TERRITORY." Vestnik SSUGT (Siberian State University of Geosystems and Technologies) 26, no. 2 (2021): 91–102. http://dx.doi.org/10.33764/2411-1759-2021-26-2-91-102.

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The article is aimed at the development of methodological foundations for the creation of geoin-formation resources of transboundary territories based on cartographic materials and remote sensing data, as well as physical and geographical zoning of the transboundary Russian-Mongolian territory. The methodological basis of the study is cartographic and statistical research methods, geoinformation technology, as well as processing and analysis of remote sensing data. As a result, the study deter-mines the features of geoinformation resources, presents their characteristics, develops a classifica

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TOGBA, Alain Privat, and Natchia AKA. "Influences of Anthropogenic Pressures on the Morphology and Hydrochemical Parameters of Bingerville Bay (Côte D'Ivoire)." International Journal of Innovative Science and Research Technology (IJISRT) 10, no. 1 (2025): 2336–46. https://doi.org/10.5281/zenodo.14863093.

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Bays are aquatic environments in which the depth tends to decrease due to numerous sediment deposits. Anthropogenic activity has a negative impact through pollution and changes to the morphology of this environment. This study was carried out in Bingerville Bay, in order to study the morphology and hydrology through hydrochemical parameters. The morphological study of the Bingerville estuary was carried out in order to characterise the morphology of the bottom of the bay using bathymetric maps (2D, 3D, slope and physiographic maps). These maps will be interpreted to establish a qualitative and

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Kupzig, Jenny, Nina Kupzig, and Martina Flörke. "Regionalization in global hydrological models and its impact on runoff simulations: a case study using WaterGAP3 (v 1.0.0)." Geoscientific Model Development 17, no. 17 (2024): 6819–46. http://dx.doi.org/10.5194/gmd-17-6819-2024.

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Abstract. Valid simulation results from global hydrological models (GHMs), such as WaterGAP3, are essential for detecting hotspots or studying patterns in climate change impacts. However, the lack of worldwide monitoring data makes it challenging to adapt GHM parameters to enable such valid simulations globally. Therefore, regionalization is necessary to estimate parameters in ungauged basins. This study presents the results of regionalization methods for the first time applied to the GHM WaterGAP3. It aims to provide insights into (1) selecting a suitable regionalization method for a GHM and

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Fay, B., and L. Neunhäuserer. "Evaluation of high-resolution forecasts with the non-hydrostaticnumerical weather prediction model Lokalmodell for urban air pollutionepisodes in Helsinki, Oslo and Valencia." Atmospheric Chemistry and Physics 6, no. 8 (2006): 2107–28. http://dx.doi.org/10.5194/acp-6-2107-2006.

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Abstract. The operational numerical weather prediction model Lokalmodell LM with 7 km horizontal resolution was evaluated for forecasting meteorological conditions during observed urban air pollution episodes. The resolution was increased to experimental 2.8 km and 1.1 km resolution by one-way interactive nesting without introducing urbanisation of physiographic parameters or parameterisations. The episodes examined are two severe winter inversion-induced episodes in Helsinki in December 1995 and Oslo in January 2003, three suspended dust episodes in spring and autumn in Helsinki and Oslo, and

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Jay-Allemand, Maxime, Julie Demargne, Pierre-André Garambois, et al. "Spatially distributed calibration of a hydrological model with variational optimization constrained by physiographic maps for flash flood forecasting in France." Proceedings of IAHS 385 (April 18, 2024): 281–90. http://dx.doi.org/10.5194/piahs-385-281-2024.

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Abstract. This contribution presents a regionalization approach to estimate spatially distributed hydrologic parameters based on: (i) the SMASH (Spatially distributed Modelling and ASsimilation for Hydrology) hydrological modeling and assimilation platform (Jay-Allemand, 2020; Jay-Allemand et al., 2020) underlying the French national flash flood forecasting system Vigicrues Flash (Javelle et al., 2019); (ii) the variational assimilation algorithm from (Jay-Allemand et al., 2020), adapted to high dimensional inverse problems; (iii) spatial constraints added to the optimization problem, based on

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Florence, Laporterie, Flouzat Guy, and Amram Olivier. "THE MORPHOLOGICAL PYRAMID AND ITS APPLICATIONS TO REMOTE SENSING: MULTIRESOLUTION DATA ANALYSIS AND FEATURES EXTRACTION." Image Analysis & Stereology 21, no. 1 (2011): 49. http://dx.doi.org/10.5566/ias.v21.p49-53.

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In remote sensing, sensors are more and more numerous, and their spatial resolution is higher and higher. Thus, the availability of a quick and accurate characterisation of the increasing amount of data is now a quite important issue. This paper deals with an approach combining a pyramidal algorithm and mathematical morphology to study the physiographic characteristics of terrestrial ecosystems. Our pyramidal strategy involves first morphological filters, then extraction at each level of resolution of well-known landscapes features. The approach is applied to a digitised aerial photograph repr

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Salimova, Barno, Abdukhaxxor Tulyaganov, Raykhan Khakimova, and Pokizakhon Muslimova. "Methods of determination of morphological indicators in hydrological calculations in the design of roads and road structures." E3S Web of Conferences 264 (2021): 02014. http://dx.doi.org/10.1051/e3sconf/202126402014.

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In solving the engineering problems in the practice of different specialties, in the design of roads and roads, structures, determining the physiographic conditions of the same regional areas: basin area (F), height (Z), average square difference of basin height (s), slope (J), parameters such as the length of the main channel in the basin (L), the width of the maximum water flow in the basin (V) and its depth (h), that is the determination of the calculated values of morphological indicators, performed using a large-scale map. It allows to estimate the amount of physical-geographical and morp

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Fay, B., and L. Neunhäuserer. "Evaluation of very high-resolution simulations with the non-hydrostatic numerical weather prediction model Lokalmodell for urban air pollution episodes in Helsinki, Oslo and Valencia." Atmospheric Chemistry and Physics Discussions 5, no. 5 (2005): 8233–84. http://dx.doi.org/10.5194/acpd-5-8233-2005.

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Abstract. The operational numerical weather prediction model Lokalmodell LM with 7 km horizontal resolution was evaluated for simulations of the meteorological conditions during observed urban air pollution episodes. The resolution was increased to experimental 2.8 km and 1.1 km resolution by one-way interactive nesting without introducing urbanisation of physiographic parameters or parameterisations. The episodes examined are two severe winter inversion-induced episodes in Helsinki in December 1995 and Oslo in January 2003, three suspended dust episodes in spring and autumn in Helsinki and Os

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Jose, Shibu, and Andrew R. Gillespie. "Assessment of Ecological Land Type Community Characteristics for Silvicultural Diagnosis in the Central Hardwoods." Northern Journal of Applied Forestry 14, no. 2 (1997): 72–77. http://dx.doi.org/10.1093/njaf/14.2.72.

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Abstract If ecosystem management replaces traditional multiple-use management on national forests, changes must be made in the delineation of forest stands reflecting ecological uniformity rather than cover type or physiographic uniformity. With delineation of ecological land units must come an understanding of forest community response to silvicultural practices and other disturbance within these units. The objective of this study was to define forest community characteristics of ecological land type phases (ELTPs) or uniform, repeatable communities in the eastern Central Hardwood Forest. For

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Matos, Talisson Sáteles, Eduardo Morgan Uliana, Camila Aparecida da Silva Martins, and Luis Miguel Castillo Rapalo. "Regionalization of maximum, minimum and mean streamflows for the Juruena River basin, Brazil." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 3 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2418.

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This study aimed to regionalize maximum (Qmax), minimum (Q95), and long-term mean (Qltm) streamflows in the Juruena River Basin to further water-resource planning and management, especially regarding water-use grant rights, streamflow regulation, and hydraulic designs. To do that, a traditional method was used, which relates the interest streamflows with sub-basin physiographic parameters by linear and nonlinear regressions. In summary, the traditional method was efficient for regionalization of Q95, Qltm, and Qmax streamflows for the Juruena River Basin. Moreover, the explanatory variables ab

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Wilby, R. L., and D. Yu. "Rainfall and temperature estimation for a data sparse region." Hydrology and Earth System Sciences 17, no. 10 (2013): 3937–55. http://dx.doi.org/10.5194/hess-17-3937-2013.

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Abstract. Humanitarian and development agencies face difficult decisions about where and how to prioritise climate risk reduction measures. These tasks are especially challenging in regions with few meteorological stations, complex topography and extreme weather events. In this study, we blend surface meteorological observations, remotely sensed (TRMM and NDVI) data, physiographic indices, and regression techniques to produce gridded maps of annual mean precipitation and temperature, as well as parameters for site-specific, daily weather generation in Yemen. Maps of annual means were cross-val

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Wilby, R. L., and D. Yu. "Rainfall and temperature estimation for a data sparse region." Hydrology and Earth System Sciences Discussions 10, no. 6 (2013): 7575–618. http://dx.doi.org/10.5194/hessd-10-7575-2013.

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Abstract. Agencies face difficult decisions about where and how to prioritise climate risk reduction measures. These tasks are especially challenging in regions with few meteorological stations, complex topography and extreme weather events. In this study, we blend surface meteorological observations, remotely sensed (TRMM and NDVI) data, physiographic indices, and regression techniques to produce gridded maps of annual mean precipitation and temperature, as well as parameters for site-specific, daily weather generation in Yemen. Maps of annual means were cross-validated and tested against ind

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Cupak, Agnieszka. "Regionalization of low flow for chosen catchments of the upper Vistula river basin using non-hierarchical cluster analysis." Időjárás 126, no. 1 (2022): 27–45. http://dx.doi.org/10.28974/idojaras.2022.1.2.

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The aim of this work was the regionalization of low flow for chosen catchments located in the upper Vistula river basin using non-hierarchical cluster analysis. Next, with such creative clusters, the regional relationships were determined between the specific low flow discharge q95 and the meteorological and physiographic parameters of the catchment. The study evaluated regional regression models for low flow (specific q95 discharge) in selected, 30 catchments located in the upper Vistula river basin. The data for calculations were a series of observations of daily discharge from the multiannu

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Shrestha, S., S. Bastola, M. S. Babel, et al. "The assessment of spatial and temporal transferability of a physically based distributed hydrological model parameters in different physiographic regions of Nepal." Journal of Hydrology 347, no. 1-2 (2007): 153–72. http://dx.doi.org/10.1016/j.jhydrol.2007.09.016.

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Wardrop, D. H., J. A. Bishop, M. Easterling, et al. "Use of landscape and land use parameters for classification and characterization of watersheds in the mid-Atlantic across five physiographic provinces." Environmental and Ecological Statistics 12, no. 2 (2005): 209–23. http://dx.doi.org/10.1007/s10651-005-1042-5.

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Mohseni Saravi, M., M. Abasizadeh, A. Malekian, and A. A. Nazari Samani. "The relationship between morphoclimatic characteristics and peak flows: A case study of the southern Alborz Basins, Iran." Progress in Physical Geography: Earth and Environment 34, no. 2 (2010): 173–82. http://dx.doi.org/10.1177/0309133309359744.

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Ideally, flood estimation in hydrological studies and applications requires recorded data, but this is missing or insufficient in many cases for a variety of reasons. Approaches to modelling the hydrologic response of ungauged basins may use physical characteristics of watersheds either to directly infer values for the parameters of hydrologic models or to establish regression relationships between watershed structure and model parameters. Most studies, however, are concentrated in humid hydroclimatic zones. In this study, a regional frequency analysis of annual peak maximum series of flood fl

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Hind, OMARI Adil LAMMINI Ali DEHBI Abdelaziz ABDALLAOUI. "USE OF GIS FOR THE ASSESSMENT OF PHYSIOGRAPHIC CHARACTERISTICS OF THE WATERSHED OF OUISLANE, BOUFEKRANE AND TOULAL OUEDS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 4 (2017): 335–46. https://doi.org/10.5281/zenodo.556241.

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This article presents the interest of the use of geographic information systems (GIS) for the characterization of the morphometric aspects, and the relief of the watershed of the three oueds studied (Ouislane, Boufekrane and Toulal), because these parameters play an important role in the flow of watersheds and in the risks of erosion. For this, we have realized several thematic maps from the SRTM images, namely: the hypsometric map, the slopes map and their exposures, the sub-basins map, the river system map and its classification. From these thematic maps produced for the watershed studied, s

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Aardt, Jan A. N. van, Randolph H. Wynne, and Richard G. Oderwald. "Forest Volume and Biomass Estimation Using Small-Footprint Lidar-Distributional Parameters on a Per-Segment Basis." Forest Science 52, no. 6 (2006): 636–49. http://dx.doi.org/10.1093/forestscience/52.6.636.

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Abstract This study assessed a lidar-based, object-oriented (segmentation) approach to forest volume and aboveground biomass modeling. The study area in the Piedmont physiographic region of Virginia is composed of temperate coniferous, deciduous, and mixed stands. Segmentation objects, hierarchical in terms of area and ranging from 0.035 to 5.632 ha/object, were created using a lidar-derived canopy height model. Horizontal point (basal area) samples were used to calculate volume and aboveground biomass. Per-object lidar point (per return height and intensity) distributional parameters were ext

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Andersson, Lotta. "Improvements of Runoff Models What Way to Go?" Hydrology Research 23, no. 5 (1992): 315–32. http://dx.doi.org/10.2166/nh.1992.0022.

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Model performance before and after the introduction of some alternative routines for calculation of evaporation, snow accumulation and melt with the PULSE/HBV runoff model were compared. The results showed that improvements were, in the best cases, small. Sometimes model fits deteriorated as a result of increased model complexity. On the basis of these, and from other experiences of attempts of model improvements, the success potentials for various efforts of model sophistication are discussed. It is hypothesised that model improvement cannot be achieved by increasing the complexity of some su

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Lambrecht, A., and M. Kuhn. "Glacier changes in the Austrian Alps during the last three decades, derived from the new Austrian glacier inventory." Annals of Glaciology 46 (2007): 177–84. http://dx.doi.org/10.3189/172756407782871341.

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AbstractBeginning in 1996, aerial photographs were taken for a new Austrian glacier inventory, resulting in digital elevation models (DEMs) and digital orthoimages. An earlier inventory of the Austrian glaciers containing the original aerial photographs and glacier maps and a manual evaluation of various glacier parameters as of 1969 has been re-evaluated at the present state of the art. The two inventories provide the basis for the comparison of glacier reactions over a period of 29 years. In general a reduction of glacier area is observed for almost all Austrian glaciers between 1969 and 199

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Urbański, Krzysztof, and Stanisław Gruszczyński. "Adaptive modelling of spatial diversification of soil classification units." Journal of Water and Land Development 30, no. 1 (2016): 127–39. http://dx.doi.org/10.1515/jwld-2016-0029.

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AbstractThe article presents the results of attempts to use adaptive algorithms for classification tasks different soils units. The area of study was the Upper Silesian Industrial Region, which physiographic and soils parameters in the form of digitized was used in the calculation. The study used algorithms, self-organizing map (SOM) of Kohonen, and classifiers: deep neural network, and two types of decision trees: Distributed Random Forest and Gradient Boosting Machine. Especially distributed algorithm Random Forest (algorithm DRF) showed a very high degree of generalization capabilities in m

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