Results 211 to 220 of about 23,743 (257)
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Application and evaluation of kriging and cokriging methods on groundwater depth mapping
Environmental Monitoring and Assessment, 2007Groundwater and water resources management play a key role in conserving the sustainable conditions in arid and semi-arid regions. Applying some techniques that can reveal the critical and hot conditions of water resources seem necessary. In this study, kriging and cokriging methods were evaluated for mapping the groundwater depth across a plain in ...
Seyed Hamid Ahmadi
exaly +4 more sources
Effects of Spatiotemporal Constraints on Geostatistical Analysis of Groundwater Depth
Groundwater, 2021Abstract Geostatistical evaluation of the groundwater depth (GWD) in California's South Coast hydrologic region, and its sensitivity to different spatiotemporal assumptions, is presented in this paper. We obtain a pseudo‐stationary representation of the groundwater depth, using the publicly available, online database from the GAMA ...
Amit Hellman +3 more
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Global Patterns of Groundwater Table Depth
Science, 2013Water Flowing Underground In addition to serving as an out-of-sight, yet much-needed water source, groundwater influences ecosystems on land—especially when the groundwater depth is shallow. Fan et al. (p.
Fan, Y., Li, H., Miguez-Macho, G.
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Evaluation of Groundwater Dynamic Regime with Groundwater Depth Evaluation Indexes
Water Environment Research, 2008An accurate quantitative evaluation of anthropogenic effects on regional groundwater dynamics is critical to the rational planning, management, and use of such resources and in maintaining the sustainability of groundwater‐dependent ecosystems.
Wang, Genxu +3 more
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Groundwater waves in aquifers of intermediate depths
Advances in Water Resources, 1997In order to model recent observations of groundwater dynamics in beaches, a system of equations is derived for the propagation of periodic watertable waves in unconfined aquifers of intermediate depths, i.e. for finite values of the dimensionless aquifer depth nwd/K which is assumed small under the Dupuit Forchheimer approach that leads to the ...
Nielsen, Peter +3 more
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Interpreting Repeated Temperature‐Depth Profiles for Groundwater Flow
Water Resources Research, 2017AbstractTemperature can be used to trace groundwater flows due to thermal disturbances of subsurface advection. Prior hydrogeological studies that have used temperature‐depth profiles to estimate vertical groundwater fluxes have either ignored the influence of climate change by employing steady‐state analytical solutions or applied transient techniques
Bense, Victor F. +4 more
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The penetration depth in modelling natural groundwater flow
Journal of Hydrology, 1996In this paper, we present a method that may lead to a better quantitative insight into the relation between the size (horizontal dimensions) of a natural groundwater flow modelling area and the schematization required for a numerical model. The method is based on a decomposition of the spatial variability of the groundwater table into a Fourier series.
Stolwijk, N.H.M. +2 more
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Groundwater discharge by phreatophyte shrubs in the Great Basin as related to depth to groundwater
Water Resources Research, 1994An equation describing the mean daily discharge of groundwater by transpiration from phreatophyte shrubs as a function of plant density, leaf area index, and depth to groundwater was developed using an energy combination model calibrated with energy fluxes calculated from micrometeorological data.
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Optimization of the Spatial Interpolation for Groundwater Depth in Shule River Basin
2009 International Conference on Environmental Science and Information Application Technology, 2009To understand the spatial interpolation optimization laws of groundwater depth, two different methods of spatial interpolation are compared: (1) inverse distance weighting (IDW), (2) Ordinary Kriging (OK), using the recorded data of groundwater depth in the Shule River basin, China, in March from 2001 to 2006.
Hua Zhang, Dehai Ma, Cheng Wang
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Clouds and Vegetation Modulate Shallow Groundwater Table Depth
Journal of Hydrometeorology, 2021AbstractA 10-yr simulation of shallow groundwater table (GWT) depth over a temperate region in northwestern Europe, using a physics-based integrated hydrological model at kilometer scale, exhibits a strong seasonal cycle. This is also well captured in terms of near-surface soil moisture anomalies, terrestrial water storage anomalies, and shallow GWT ...
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