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Journal articles on the topic 'Ground water-surface water interface'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Puckett, Larry J., Celia Zamora, Hedeff Essaid, et al. "Transport and Fate of Nitrate at the Ground-Water/Surface-Water Interface." Journal of Environmental Quality 37, no. 3 (2008): 1034–50. http://dx.doi.org/10.2134/jeq2006.0550.

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2

Riveros-Iregui, Diego A., and Jennifer Y. King. "Isotopic evidence of methane oxidation across the surface water-ground water interface." Wetlands 28, no. 4 (2008): 928–37. http://dx.doi.org/10.1672/07-191.1.

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3

Bobba, A. Ghosh. "Ground Water-Surface Water Interface (GWSWI) Modeling: Recent Advances and Future Challenges." Water Resources Management 26, no. 14 (2012): 4105–31. http://dx.doi.org/10.1007/s11269-012-0134-x.

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4

Legeas, M., J. Carré, and Ph Mérot. "Effect of Wastewater Injection on Ground Water Quality." Water Science and Technology 25, no. 12 (1992): 283–86. http://dx.doi.org/10.2166/wst.1992.0360.

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Effluents from the treatment plant of Saint Jean de Monts and Saint Hilaire de Riez have been injected into a confined ground water for twelve years. This ground water is connected with the sea. Effluent floats on the surface of the aquifer and it disperses by dilution at the freshwater/salt water interface. The aquifer acts as a direct overflow pipe. The injection of effluent has preserved the quality of waters in the coastal area and in the Breton Marsh.

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Browne, Bryant A., and Nathan M. Guldan. "Understanding Long-Term Baseflow Water Quality Trends Using a Synoptic Survey of the Ground Water-Surface Water Interface, Central Wisconsin." Journal of Environmental Quality 34, no. 3 (2005): 825–35. http://dx.doi.org/10.2134/jeq2004.0134.

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6

Tsou, Ming-Shu, and Donald O. Whittemore. "User Interface for Ground-Water Modeling: ArcView Extension." Journal of Hydrologic Engineering 6, no. 3 (2001): 251–57. http://dx.doi.org/10.1061/(asce)1084-0699(2001)6:3(251).

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7

Vroblesky, D. A., L. C. Rhodes, J. F. Robertson, and J. A. Harrigan. "Locating VOC Contamination in a Fractured-Rock Aquifer at the Ground-Water/Surface-Water Interface Using Passive Vapor Collectors." Ground Water 34, no. 2 (1996): 223–30. http://dx.doi.org/10.1111/j.1745-6584.1996.tb01882.x.

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8

Melvold, Kjetil, Thomas Schuler, and Gaute Lappegard. "Ground-water intrusions in a mine beneath Høganesbreen, Svalbard: assessing the possibility of evacuating water subglacially." Annals of Glaciology 37 (2003): 269–74. http://dx.doi.org/10.3189/172756403781816040.

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AbstractEvacuation of the ground-water intruding into a coal mine beneath Høganesbreen, Svalbard, is difficult and expensive. To solve this problem, it was proposed that the mine be connected to the ice–bedrock interface. Pumping hot water from the mine should establish a flow path along the glacier bed where the ground-water would drain gravitationally. In this paper, we assess the requirements for maintaining such a drainage system in open-channel conditions. To obtain the bedrock topography, we determined the ice thickness by ground-penetrating radar and subtracted it from the surface eleva

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9

Gusmeroli, A., and G. Grosse. "Ground penetrating radar detection of subsnow slush on ice-covered lakes in interior Alaska." Cryosphere 6, no. 6 (2012): 1435–43. http://dx.doi.org/10.5194/tc-6-1435-2012.

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Abstract. Lakes are abundant throughout the pan-Arctic region. For many of these lakes ice cover lasts for up to two thirds of the year. The frozen cover allows human access to these lakes, which are therefore used for many subsistence and recreational activities, including water harvesting, fishing, and skiing. Safe traveling condition onto lakes may be compromised, however, when, after significant snowfall, the weight of the snow acts on the ice and causes liquid water to spill through weak spots and overflow at the snow-ice interface. Since visual detection of subsnow slush is almost imposs

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10

Langevin, Christian D., and David M. Bean. "Ground water vistas: A graphical user interface for the MODFLOW family of ground water flow and transport models." Ground Water 43, no. 2 (2005): 165–68. http://dx.doi.org/10.1111/j.1745-6584.2005.0016.x.

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11

Guo, Haipeng, and Jiu Jimmy Jiao. "Impact of Coastal Land Reclamation on Ground Water Level and the Sea Water Interface." Ground Water 45, no. 3 (2007): 362–67. http://dx.doi.org/10.1111/j.1745-6584.2006.00290.x.

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12

Gusmeroli, A., and G. Grosse. "Ground penetrating radar detection of subsnow liquid overflow on ice-covered lakes in interior Alaska." Cryosphere Discussions 6, no. 4 (2012): 3079–99. http://dx.doi.org/10.5194/tcd-6-3079-2012.

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Abstract. Lakes are abundant throughout the pan-Arctic region. For many of these lakes ice cover lasts for up to two thirds of the year. This frozen cover allows human access to these lakes, which are therefore used for many subsistence and recreational activities, including water harvesting, fishing, and skiing. Safe access to these lakes may be compromised, however, when, after significant snowfall, the weight of the snow acts on the ice and causes liquid water to spill through weak spots and overflow at the snow-ice interface. Since visual detection of subsnow liquid overflow (SLO) is almos

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13

Goforth, Tom, and Chris Hayward. "Seismic reflection investigations of a bedrock surface buried under alluvium." GEOPHYSICS 57, no. 9 (1992): 1217–27. http://dx.doi.org/10.1190/1.1443337.

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Seismic reflection techniques were used to characterize a bedrock surface buried under alluvium near a construction site on the campus of Baylor University in Waco, Texas. One of the objectives of the study was to determine if either compressional or shear seismic profiling could be used to reduce the number of engineering boreholes required to determine the bedrock depth and relief prior to building construction. The upper few meters of the alluvium is dry but the lower portion is below the water table, making the bedrock surface a difficult target for compressional waves. The compressional r

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14

Ford, T. E., and Robert J. Naiman. "Groundwater–Surface Water Relationships in Boreal Forest Watersheds: Dissolved Organic Carbon and Inorganic Nutrient Dynamics." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 1 (1989): 41–49. http://dx.doi.org/10.1139/f89-006.

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Dissolved organic carbon (DOC) and inorganic nutrients (NH4-N, NO3-N, soluble total N, PO4-P, soluble total P, and Si) were measured in ground and surface waters in the Matamek River drainage network, Quebec, Canada. In general, concentrations of carbon and nitrogen were significantly higher in groundwater than in surface water (up to 340% for DOC and up to 700% for total N). No significant difference was detected for phosphorus whereas considerable variation occurred for silicon, with significantly higher groundwater concentrations at 50% of the study sites. We hypothesize that (1) groundwate

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15

Hadi, M. Pramono, Ramdani Salam, and Rahim Achmad. "Groundwater resources mapping for small island using Geoelectrical Technique the case study of Ternate Island." Indonesian Journal of Geography 51, no. 1 (2019): 49. http://dx.doi.org/10.22146/ijg.41242.

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The measurement of 2D geo-electrical using Wenner Alpha configuration was conducted in the shore line of northern part of Ternate island, in order to know the depth of interface and to analyze the aquifers in conjunction with estimation of ground water potential. Water quality analysis is also conducted in some dug wells, such as in situ water temperature, electrical conductivity, pH, turbidity, dissolved oxygen, and salinity.Due to laboratory analysis, the values of measured parameters of water quality from some dug wells meets to the standards referred, especially for drinking water. The res

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16

Ibrahimova, A. R. "Role of surface water in the formation of underground water in Aghstafachai-Ganjachai interfluve and its usage prospects." Azerbaijan Oil Industry, no. 3 (March 15, 2020): 58–62. http://dx.doi.org/10.37474/0365-8554/2020-3-58-62.

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With the purpose of water resources estimation of Aghstafachai-Ganjachai interfluve, geophysical surveys have been carried out. As a result, based on the well data, the maps were developed and interface conditions of the territory specified. The tectonic structure of Aghstafachai-Ganjachai interfluve lowland is associated with the formation of a sole artesian basin on its territory. Aghstafachai, Hasansu, Tovuzchai, Zeyemchai, Shamkirchai, Goshgarchai, Ganjachai and Kurekchai, being the main source of groundwater recharge, created a combined alluvial cone on the territory. The underground wate

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17

Yechieli, Yoseph. "Fresh-Saline Ground Water Interface in the Western Dead Sea Area." Ground Water 38, no. 4 (2000): 615–23. http://dx.doi.org/10.1111/j.1745-6584.2000.tb00253.x.

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18

Hövelmann, Jörn, Christine Putnis, and Liane Benning. "Metal Sequestration through Coupled Dissolution–Precipitation at the Brucite–Water Interface." Minerals 8, no. 8 (2018): 346. http://dx.doi.org/10.3390/min8080346.

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The increasing release of potentially toxic metals from industrial processes can lead to highly elevated concentrations of these metals in soil, and ground- and surface-waters. Today, metal pollution is one of the most serious environmental problems and thus, the development of effective remediation strategies is of paramount importance. In this context, it is critical to understand how dissolved metals interact with mineral surfaces in soil–water environments. Here, we assessed the processes that govern the interactions between six common metals (Zn, Cd, Co, Ni, Cu, and Pb) with natural bruci

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19

Singer, Catherine K., and Chris A. Martin. "A Comparison of Surface Mulch Type on Patterns of Above- and Below-ground Temperature and Surface Net Radiation in a Drip-irrigated Desert Landscape." HortScience 40, no. 4 (2005): 1105E—1106. http://dx.doi.org/10.21273/hortsci.40.4.1105e.

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Mulches applied to landscape surfaces can moderate soil temperatures by changing the surface heat energy balance and conserve soil water by reducing evaporation rates. In the Southwest, decomposing granite is commonly used as landscape mulch. However, organic mulches, such as pine residue mulch and shredded tree trimmings, are becoming more available as industry by-products. Recent impetus toward water conservation and recycling forest and urban tree waste into urban landscapes has increased the need to better understand how such mulch types effect the temperature, moisture. and light quality

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20

Boulton, G. S., and K. E. Dobbie. "Consolidation of sediments by glaciers: relations between sediment geotechnics, soft-bed glacier dynamics and subglacial ground-water flow." Journal of Glaciology 39, no. 131 (1993): 26–44. http://dx.doi.org/10.1017/s0022143000015690.

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AbstractA theory of subglacial consolidation is developed which shows how the meltwater flux beneath a glacier leaves a consolidation signature from which many important glacier-dynamic properties can be inferred. Conditions under which water is discharged through channels or in a thin film at the ice—bed interface or by ground-water flow are discussed, and it is concluded that glaciers flowing over aquifers of high transmissibility can induce deep circulation patterns quite different from non-glacial circulation. Examples of glacial pre-consolidation profiles in sediments from The Netherlands

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21

Boulton, G. S., and K. E. Dobbie. "Consolidation of sediments by glaciers: relations between sediment geotechnics, soft-bed glacier dynamics and subglacial ground-water flow." Journal of Glaciology 39, no. 131 (1993): 26–44. http://dx.doi.org/10.3189/s0022143000015690.

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AbstractA theory of subglacial consolidation is developed which shows how the meltwater flux beneath a glacier leaves a consolidation signature from which many important glacier-dynamic properties can be inferred. Conditions under which water is discharged through channels or in a thin film at the ice—bed interface or by ground-water flow are discussed, and it is concluded that glaciers flowing over aquifers of high transmissibility can induce deep circulation patterns quite different from non-glacial circulation. Examples of glacial pre-consolidation profiles in sediments from The Netherlands

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22

Al-Emami, Omar. "Investigation of soil-steel interface behavior of Iraqi soil by direct shear apparatus." MATEC Web of Conferences 162 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201816201003.

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Soil - structure interaction is an important theme observed in many civil engineering structures like fondations. The interface shear strength plays a significant role in the analysis and design of many structures constructed above or under the ground. In this study, a total of 28 specimens were tested at vertical stresses of 100, 200, and 400 kPa using direct shear apparatus under consolidated drained condition. A silty sand soil, as per USCS classification system was prepared in the laboratory at different water contents (4.5%, 8.8%, and 12.5%) and voids ratios (0.4, 0.6, 0.8, and 1). The fr

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23

Yeager, Tom, Jeff Million, Claudia Larsen, and Bob Stamps. "Florida Nursery Best Management Practices: Past, Present, and Future." HortTechnology 20, no. 1 (2010): 82–88. http://dx.doi.org/10.21273/horttech.20.1.82.

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Florida container nurseries face the challenge of maintaining profitability while protecting the environment by improving the efficiency of water and fertilizer use. Best management practices (BMPs) provide irrigation and fertilization guidelines for meeting this challenge. BMPs are economically and technologically feasible to implement and they focus on the ground- and surface water quality issues of the state. However, increasing nursery participation in the statewide BMP program is crucial as the industry continues to expand and interface with urbanization.

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24

Moore, LS. "Water chemistry of the coastal saline lakes of the Clifton-Preston Lakeland system, south-western Australia, and its influence on stromatolite formation." Marine and Freshwater Research 38, no. 5 (1987): 647. http://dx.doi.org/10.1071/mf9870647.

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The water chemistry of Lake Clifton, the adjacent lakes and the regional ground water was investigated to aid in the elucidation of the factors responsible for the restriction of living stromatolites to Lake Clifton. The ionic composition of water in the lakes is proportionally similar to sea water, but the ground water is enriched in calcium and bicarbonate and is of lower salinity (1-2 g I-1). The salinities of the lakes ranged from 7 to 369 g l-1 during 1984 but, in contrast to the other lakes, Clifton remained less saline than sea water throughout the year. Ground waters from an unconfined

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25

Heron, ML, PE Dexter, and BT McGann. "Parameters of the air-sea interface by high-frequency ground-wave Doppler radar." Marine and Freshwater Research 36, no. 5 (1985): 655. http://dx.doi.org/10.1071/mf9850655.

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A 30-MHz ground-wave ocean surface radar has been deployed inside the Great Barrier Reef where the water is sheltered from ocean swell. The spatial resolution of the radar is 3 km radially and 3.5� in azimuth. In each cell a 102.4-s time series is used to determine radial surface currents, wind directions, root- mean-square wave heights and wind speeds. Coincident observations of sea-wave spectra, surface currents and boundary-layer winds are used to evaluate the radar performance and to modify some of the methods of data analysis to suit these conditions. Surface current values are observed b

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26

Rábade, H. G., P. Vellando, F. Padilla, and R. Juncosa. "A coupled FE model for the joint resolution of the shallow water and the groundwater flow equations." International Journal of Numerical Methods for Heat & Fluid Flow 24, no. 7 (2014): 1553–69. http://dx.doi.org/10.1108/hff-05-2012-0123.

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Purpose – A new coupled finite element model has been developed for the joint resolution of both the shallow water equations, that governs the free surface flow, and the groundwater flow equation that governs the motion of water through a porous media. The paper aims to discuss these issues. Design/methodology/approach – The model is based upon two different modules (surface and ground water) previously developed by the authors, that have been validated separately. Findings – The newly developed software allows for the assessment of the fluid flow in natural watersheds taking into account both

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27

Zhang, Pin, Ren-Peng Chen, Huai-Na Wu, and Yuan Liu. "Ground settlement induced by tunneling crossing interface of water-bearing mixed ground: A lesson from Changsha, China." Tunnelling and Underground Space Technology 96 (February 2020): 103224. http://dx.doi.org/10.1016/j.tust.2019.103224.

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28

Groffman, R. "The Upper Water Table: A Reactive Interface Between Ground Water and Surficial Biogeochemical Processes in a Shallow Alluvial Aquifer." Mineralogical Magazine 62A, no. 1 (1998): 543–44. http://dx.doi.org/10.1180/minmag.1998.62a.1.287.

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29

Zhang, Yi, Wenbing Wu, Guoxiong Mei, and Longchen Duan. "THREE-DIMENSIONAL CONSOLIDATION THEORY OF VERTICAL DRAIN BASED ON CONTINUOUS DRAINAGE BOUNDARY." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 25, no. 2 (2019): 145–55. http://dx.doi.org/10.3846/jcem.2019.8071.

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To remedy the limitation that the conventional drainage boundary only considers two extreme cases of pervious and impervious boundaries, the consolidation theory of vertical drain is derived by applying the continuous drainage boundary, and its validity is also proven. Based on the obtained solutions, the excess pore water pressure and the average degree of consolidation under the continuous drainage boundary condition are analyzed, and the effect of the drainage capacity of the top surface, the smear effect and the well resistance on consolidation are explored. Furthermore, the practicality o

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30

Hanzlík, Josef, and Anna Maria Camus. "Transfer of trispolypyridineruthenium(II) chelates in their ground and excited states across the water/1,2-dichloroethane interface." Collection of Czechoslovak Chemical Communications 56, no. 1 (1991): 130–39. http://dx.doi.org/10.1135/cccc19910130.

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Transfer of trispolypyridineruthenium(II) chelates of the type [Ru(chel)3]2+, where chel is 2,2’-bipyridine, 2,2’-bipyrimidine or 2,2’-bipyrazine, in their ground states across the water/1,2-dichloroethane interface was classified as the reversible transfer of a divalent cation. Thermodynamic and transport parameters characterizing this transfer were obtained from voltammetric measurements. Photoexcitation of these chelates gives rise to the photoinduced charge transfer across the water/1,2-dichloroethane interface.

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31

Webb, Ryan W., Keith Jennings, Stefan Finsterle, and Steven R. Fassnacht. "Two-dimensional liquid water flow through snow at the plot scale in continental snowpacks: simulations and field data comparisons." Cryosphere 15, no. 3 (2021): 1423–34. http://dx.doi.org/10.5194/tc-15-1423-2021.

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Abstract. Modeling the multidimensional flow of liquid water through snow has been limited in spatial and temporal scales to date. Here, we present simulations using the inverse TOUGH2 (iTOUGH2) model informed by the model SNOWPACK, referred to as SnowTOUGH. We use SnowTOUGH to simulate snow metamorphism, melt/freeze processes, and liquid water movement in two-dimensional snowpacks at the plot scale (20 m) on a sloping ground surface during multi-day observation periods at three field sites in northern Colorado, USA. Model results compare well with sites below the treeline and above the treeli

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32

Yamaguchi, Tetsuji, Takuma Sawaguchi, Manabu Tsukada, Seiichi Hoshino, and Tadao Tanaka. "Mineralogical changes and associated decrease in tritiated water diffusivity after alteration of cement–bentonite interfaces." Clay Minerals 51, no. 2 (2016): 279–87. http://dx.doi.org/10.1180/claymin.2016.051.2.13.

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AbstractAlteration of cement–bentonite interfaces and accompanying changes in diffusivity of tritiated water (HTO) was investigated experimentally using intact, hardened cement-paste specimens. The alteration by carbonate solution was accompanied by mineralogical changes at the interface and a decrease in the HTO diffusivity to ∼70 ± 7%of the initial value after a 180-day period. Another alteration in contact with compacted bentonite was accompanied by mineralogical changes at the interface and a decrease in the HTO diffusivity to ∼71 ± 10% of the initial value after a 600-day period. The chan

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33

Mandlburger, G., and B. Jutzi. "FEASIBILITY INVESTIGATION ON SINGLE PHOTON LIDAR BASED WATER SURFACE MAPPING." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences IV-1 (September 26, 2018): 109–16. http://dx.doi.org/10.5194/isprs-annals-iv-1-109-2018.

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<p><strong>Abstract.</strong> The recent advent of single photon sensitive airborne LiDAR (Light Detection And Ranging) sensors has enabled higher areal coverage performance at the price of an increased outlier rate and a lower ranging accuracy compared to conventional Multi-Photon LiDAR. Single Photon LiDAR, in particular, uses green laser light capable of penetrating clear shallow water. Although primarily designed for large area topographic mapping, the technique can also be used for mapping the water surface and shallow water bathymetry. In this contribution we investigat

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34

Xiong, Meng, Pengfei He, Yanhu Mu, and Xinlei Na. "Modeling of Concrete-Frozen Soil Interface from Direct Shear Test Results." Advances in Civil Engineering 2021 (January 2, 2021): 1–11. http://dx.doi.org/10.1155/2021/7260598.

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The shear behaviors of concrete-frozen soil interface are important for analyzing the performance of engineering structures buried in the frozen ground. In this paper, a series of direct shear tests were carried out to determine the concrete-soil interface behaviors at different test temperatures (19°C, −1°C, −3°C, and −5°C) and initial water contents (9.2%, 13.1%, 17.1%, and 20.8%) of soils. The interface shear behaviors, including the shear stress versus horizontal displacement, interface cohesion, and interface friction coefficient, were analyzed based on the test results. Then, a simple, n

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35

Fulazzaky, M. A., Z. Yusop, I. Ibrahim, and A. H. M. Kassim. "A new technique using the aero-infiltrometer to characterise the natural soils based on the measurements of infiltration rate and soil moisture content." Hydrology and Earth System Sciences Discussions 10, no. 10 (2013): 12717–51. http://dx.doi.org/10.5194/hessd-10-12717-2013.

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Abstract. Infiltration rate (f) and soil moisture content (θ) are the important factors for water resources management. Accurate measurements of these factors are not so readily available in most farmlands since present measuring equipments are not really suitable. This paper proposes the measuring device that uses a simple method to measure the rate of water infiltration into the ground and to determine the percentage of water contained in the soil. The two empirical equations which formulated on the basis of power regression models of plotting f vs. air pressure dropping rate (P) and θ vs. P

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36

Fulazzaky, M. A., Z. Yusop, I. Ibrahim, and A. H. M. Kassim. "A new technique using the aero-infiltrometer to characterise the natural soils based on the measurements of infiltration rate and soil moisture content." Hydrology and Earth System Sciences Discussions 11, no. 2 (2014): 2515–53. http://dx.doi.org/10.5194/hessd-11-2515-2014.

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Abstract. Infiltration rate (f) and soil moisture content (θ) are the important factors for water resources management. Accurate measurements of these factors are not so readily available in most farmlands since present measuring equipments are not really suitable. This paper proposes the measuring device that uses a simple method to measure the rate of water infiltration into the ground and to determine the percentage of water contained in the soil. The two empirical equations which formulated on the basis of power regression models of plotting f vs. air pressure dropping rate (P) and θ vs. P

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37

Hachem, S., C. R. Duguay, and M. Allard. "Comparison of MODIS-derived land surface temperatures with ground surface and air temperature measurements in continuous permafrost terrain." Cryosphere 6, no. 1 (2012): 51–69. http://dx.doi.org/10.5194/tc-6-51-2012.

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Abstract. Obtaining high resolution records of surface temperature from satellite sensors is important in the Arctic because meteorological stations are scarce and widely scattered in those vast and remote regions. Surface temperature is the primary climatic factor that governs the existence, spatial distribution and thermal regime of permafrost which is a major component of the terrestrial cryosphere. Land Surface (skin) Temperatures (LST) derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor aboard the Terra and Aqua satellite platforms provide spatial estimates of ne

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38

Jorgenson, M. T., and T. E. Osterkamp. "Response of boreal ecosystems to varying modes of permafrost degradation." Canadian Journal of Forest Research 35, no. 9 (2005): 2100–2111. http://dx.doi.org/10.1139/x05-153.

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Permafrost degradation associated with a warming climate is second only to wildfires as a major disturbance to boreal forests. Permafrost temperatures have risen to 4 °C since the “Little Ice Age”, resulting in widespread thawing of permafrost. The mode of permafrost degradation is highly variable, and its topographic and ecological consequences depend on the interaction of slope position, soil texture, hydrology, and ice content. We partitioned this variability into 16 primary modes: (1) thermokarst lakes from lateral thermomechanical erosion; (2) thermokarst basins after lake drainage; (3) t

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39

Eigenbrod, K. D., and G. J. A. Kennepohl. "Moisture Accumulation and Pore Water Pressures at Base of Pavements." Transportation Research Record: Journal of the Transportation Research Board 1546, no. 1 (1996): 151–61. http://dx.doi.org/10.1177/0361198196154600117.

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A unique mechanism based on extensive field and laboratory studies is presented to account for certain premature failures of flexible pavements in cold areas like those in Scandinavia and in northern parts of Canada and the United States. Water condensing at the interface between pavement and granular base accumulates at subzero temperatures resulting in excess moisture in this zone. During the thaw period of the uppermost base layer, the excess water in the aggregate is trapped between impervious layers of frozen ground to the sides and below as well as an impervious layer of asphalt pavement

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40

Zhang, Shunfu, Changjun Liu, Chuanke Li, Sili Long, Jian Zhou, and Qiyi Zhang. "Analysis of Water Cycle in Weizhou Island of Beihai City, Guangxi Province, Part II: Study On Groundwater Exploitation Plan." MATEC Web of Conferences 246 (2018): 02047. http://dx.doi.org/10.1051/matecconf/201824602047.

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To relieve the drop of groundwater and seawater intrusion in Weizhou Island caused by overexploitation, the analysis model of precipitation-runoff and variable-density groundwater flow in Weizhou Island was established and the model’s parameter identification results were used to investigate groundwater level and seawater/freshwater interface changes under different groundwater exploitation plans. Thereafter, a rational groundwater exploitation plan could be made to prevent the lowering of groundwater levels caused by ground water overexploitation and ecological deterioration caused by seawate

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Wheless, G. H., and G. T. Csanady. "Instability waves on the air–sea interface." Journal of Fluid Mechanics 248 (March 1993): 363–81. http://dx.doi.org/10.1017/s0022112093000801.

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We used a compound matrix method to integrate the Orr–Sommerfeld equation in an investigation of short instability waves (λ < 6 cm) on the coupled shear flow at the air–sea interface under suddenly imposed wind (a gust model). The method is robust and fast, so that the effects of external variables on growth rate could easily be explored. As expected from past theoretical studies, the growth rate proved sensitive to air and water viscosity, and to the curvature of the air velocity profile very close to the interface. Surface tension had less influence, growth rate increasing somewhat with d

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Xie, Zhenghui, Zhenhua Di, Zhendong Luo, and Qian Ma. "A Quasi-Three-Dimensional Variably Saturated Groundwater Flow Model for Climate Modeling." Journal of Hydrometeorology 13, no. 1 (2012): 27–46. http://dx.doi.org/10.1175/jhm-d-10-05019.1.

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Abstract In this study, a quasi-three-dimensional, variably saturated groundwater flow model was developed by approximately dividing the three-dimensional soil water and groundwater flow into an unsaturated vertical soil water flow and a horizontal groundwater flow to simulate the interactions among soil water, groundwater, and vegetation. The developed model consists of a one-dimensional unsaturated soil water flow model with the water table as the moving boundary using an adaptive grid structure for a vertical soil column formed based on discrete grid cells in a horizontal domain, a two-dime

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Shao, Hai Yan, Zhen Hai Zhang, Ke Jie Li, et al. "Water Hazard Detection Based on 3D LIDAR." Applied Mechanics and Materials 668-669 (October 2014): 1174–77. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.1174.

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Autonomous off-road navigation is a highly complicated task for a robot or unmanned ground vehicle (UGV) owing to the different kinds of obstacles it could encounter. In-particular, water hazards such as puddles and ponds are very common in outdoor environments and are hard to detect even with ranging devices due to the specular nature of reflection at the air water interface. In recent years, many researches to detect the water bodies have been done. But there still has been very little work on detecting bodies of water that could be navigation hazards, especially at night. In this paper, we

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Buchner, Jens S., Ute Wollschläger, and Kurt Roth. "Inverting surface GPR data using FDTD simulation and automatic detection of reflections to estimate subsurface water content and geometry." GEOPHYSICS 77, no. 4 (2012): H45—H55. http://dx.doi.org/10.1190/geo2011-0467.1.

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A new inversion scheme for common-offset ground-penetrating radar measurements at multiple antenna separations was proposed, which is intermediate between inverting of picked reflectors using ray-tracing and full-waveform inversion. The measurements are modeled similarly to the real data using 2D finite-difference time-domain simulations. These simulations are obtained with a parameterized model of the subsurface that consists of several layers with constant dielectric permittivity and an explicit representation of the layers’ interfaces. Then, reflections in the modeled and in the real data a

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Deidda, G. P., and R. Balia. "An ultrashallow SH‐wave seismic reflection experiment on a subsurface ground model." GEOPHYSICS 66, no. 4 (2001): 1097–104. http://dx.doi.org/10.1190/1.1487057.

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An SH‐wave seismic reflection experiment was conducted to evaluate the feasibility and cost effectiveness of reflection imaging ultrashallow targets commonly encountered in engineering, groundwater, and environmental investigations. It was carried out on a purpose‐built subsurface ground model consisting of a concrete layer, at a depth from 2.85–5 m, and a low‐velocity overburden (<80 and 150 m/s for S‐ and P‐waves, respectively), constituted of filling material, with the water table 2.60 m deep. High‐quality CDP data, acquired by using a 10‐kg sledgehammer and newly designed horizontal det

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Miller, Richard D., Don W. Steeples, and Michael Brannan. "Mapping a bedrock surface under dry alluvium with shallow seismic reflections." GEOPHYSICS 54, no. 12 (1989): 1528–34. http://dx.doi.org/10.1190/1.1442620.

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Shallow seismic‐reflection techniques were used to image the bedrock‐alluvial interface, near a chemical evaporation pond in the Texas Panhandle, allowing optimum placement of water‐quality monitor wells. The seismic data showed bedrock valleys as shallow as 4 m and accurate to within 1 m horizontally and vertically. The normal‐moveout velocity within the near‐surface alluvium varies from 225 m/s to 400 m/s. All monitor‐well borings near the evaporation pond penetrated unsaturated alluvial material. On most of the data, the wavelet reflected from the bedrock‐alluvium interface has a dominant f

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Fannin, R. J., and J. Jaakkola. "Hydrological response of hillslope soils above a debris-slide headscarp." Canadian Geotechnical Journal 36, no. 6 (1999): 1111–22. http://dx.doi.org/10.1139/t99-074.

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The Jamieson Creek debris slide initiated in thin soils over a competent bedrock surface, on a planar section of hillslope, during a heavy rainstorm in November 1990. An array of automated piezometers and tensiometers was placed along a 22 m wide section of the headscarp in 1997 to monitor the temporal variation of pore-water pressures. Interpretation of the data addresses the hydrologic response to the storms in October and November 1997. The piezometers, which were designed for installation by driving, reveal very localized responses in what otherwise appears to be a uniform soil matrix. Pea

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Le Moigne, Patrick, François Besson, Eric Martin, et al. "The latest improvements with SURFEX v8.0 of the Safran–Isba–Modcou hydrometeorological model for France." Geoscientific Model Development 13, no. 9 (2020): 3925–46. http://dx.doi.org/10.5194/gmd-13-3925-2020.

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Abstract. This paper describes the impact of the various changes made to the Safran–Isba–Modcou (SIM) hydrometeorological system and demonstrates that the new version of the model performs better than the previous one by making comparisons with observations of daily river flows and snow depths. SIM was developed and put into operational service at Météo-France in the early 2000s. The SIM application is dedicated to the monitoring of water resources and can therefore help in drought monitoring or flood risk forecasting on French territory. This complex system combines three models: SAFRAN, whic

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Martin, Chris A., and S. Bhattacharya. "Below-ground Pot-in-Pot (PIP) System and Substrate Moisture Regimen Affect Growth of Two Desert Trees." HortScience 33, no. 3 (1998): 504b—504. http://dx.doi.org/10.21273/hortsci.33.3.504b.

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Acacia smalli (sweet acacia) and Cercidium praecox (palo brea) trees were grown during June–Oct. 1997 outdoors in full sun in 19-L containers positioned either PIP or above ground on the soil surface. The 38-L PIP holder containers were placed in the ground. Cyclic pulses of water were controlled by soil moisture sensors interfaced with electronic solenoid irrigation valves. Rooting substrate water potentials at 20 cm below the substrate surface and 10 cm inside the container wall were consistently maintained at either >–0.01 MPa (wet) or between –0.02 and –0.03 MPa (dry) for both above gro

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Wang, Qing, and Yupeng Shen. "Calculation and Interpretation of Ground Penetrating Radar for Temperature and Relative Water Content of Seasonal Permafrost in Qinghai-Tibet Platea." Electronics 8, no. 7 (2019): 731. http://dx.doi.org/10.3390/electronics8070731.

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Due to the seasonal permafrost thawing, the Qinghai–Tibet Highway has a depression and instability of the roadbed. In order to obtain the ablation interface and water content characteristics of seasonal permafrost areas, non-destructive ground penetrating radars using electromagnetic wave detection methods are widely used. Regarding the imaging of the ablation interface in permafrost regions, this paper proposes a high-precision procedure for seasonal permafrost media using waveform difference analysis, electromagnetic wave attenuation attribute calculation and relative wave impedance conversi

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