Results 21 to 30 of about 133,844 (123)

Global Groundwater Sustainability

open access: yesGroundwater, 2020
No abstract but introduction: Groundwater resources are the most reliable source of freshwater on the planet, so long as they are sustainably managed. While serious groundwater depletion and contamination are well documented in several regions around the world, other regions have the potential to leverage under-developed groundwater resources to fuel ...
openaire   +4 more sources

GWSDAT - GroundWater Spatiotemporal Data Analysis Tool [PDF]

open access: yesarXiv, 2013
Periodic monitoring of groundwater quality at industrial and commercial sites generates large volumes of spatiotemporal concentration data. Data modelling is typically restricted to either the analysis of monotonic trends in individual wells, or independent fitting of spatial concentration distributions (e.g.
arxiv  

Anthropogenic influences on groundwater in the vicinity of a long-lived radioactive waste repository [PDF]

open access: yes, 2017
The groundwater flow system in the Culebra Dolomite Member (Culebra) of the Permian Rustler Formation is a potential radionuclide release pathway from the Waste Isolation Pilot Plant (WIPP), the only deep geological repository for transuranic waste in the United States.
arxiv   +1 more source

An integrated assessment of the impact of precipitation and groundwater on vegetation growth in arid and semiarid areas [PDF]

open access: yesarXiv, 2014
Increased demand for water resources together with the influence of climate change has degraded water conditions which support vegetation in many parts of the world, especially in arid and semiarid areas. This study develops an integrated framework to assess the impact of precipitation and groundwater on vegetation growth in the Xiliao River Plain of ...
arxiv  

Multi-Agent System for Groundwater Depletion Using Game Theory [PDF]

open access: yesarXiv, 2016
Groundwater is one of the most vital of all common pool resources throughout the world. More than half of groundwater is used to grow crops. This research models groundwater depletion patterns within a multi-agent system framework. Irrigators are modeled as agents in the multi-agent system.
arxiv  

Gradual Variation Analysis for Groundwater Flow [PDF]

open access: yesarXiv, 2010
Groundwater flow in Washington DC greatly influences the surface water quality in urban areas. The current methods of flow estimation, based on Darcy's Law and the groundwater flow equation, can be described by the diffusion equation (the transient flow) and the Laplace equation (the steady-state flow).
arxiv  

Non-renewable groundwater use and groundwater depletion: a review

open access: yesEnvironmental Research Letters, 2019
Abstract Population growth, economic development, and dietary changes have drastically increased the demand for food and water. The resulting expansion of irrigated agriculture into semi-arid areas with limited precipitation and surface water has greatly increased the dependence of irrigated crops on groundwater withdrawal.
Marc F. P. Bierkens   +2 more
openaire   +3 more sources

Isotope characterization of shallow aquifers in the Horombe region, South of Madagascar [PDF]

open access: yesarXiv, 2012
The present study deals with the problem of evaluation of the recharge mechanism and the characterization of the groundwater flow system in the basement shallow aquifer, which is one of the groundwater resource in the semi-arid South region of Madagascar.
arxiv  

Solving Groundwater Flow Equations Using Gradually Varied Functions [PDF]

open access: yesarXiv, 2012
Finite difference method and finite element method are popular methods for solving groundwater flow equations. This paper presents a new method that uses gradually varied functions to solve such equation. In this paper, we have established a mathematical model based on gradually varied functions for groundwater data volume reconstruction.
arxiv  

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