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Showing 1 to 20 of 66 for “"aquifer-system"”.
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Digital Simulation of a Stream-Aquifer System
Made available in DSpace on 2014-12-11T18:09:49Z (GMT). No. of bitstreams: 1 7105167.pdf: 2608987 bytes, checksum: 798192185753e97b50cc0520e729aa7e (MD5) Previous issue date: 1970
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Methods for Evaluating Aquifer-System Parameters from a Cumulative Compaction Record
… have been implemented to reduce over-pumping of aquifer-systems, land subsidence is still a serious issue worldwide. Accurate aquifer characterization is critical to understand the response of an aquifer-system to prolonged pumping but is often difficult and expensive to conduct. The purpose of …
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Groundwater Modeling and Hydrogeological Parameter Estimation: Potomac Aquifer System, SWIFT Research Center
… (SWIFT) project in eastern Virginia is a Managed Aquifer Recharge project designed to alleviate the depletion of the Potomac Aquifer System due to unsustainable groundwater withdrawals. At the SWIFT Research Center (SWIFTRC) in Nansemond, VA, a pilot testing well (TW-1) has been implemented to …
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Impact of Phytoremediation System on Groundwater Flow in a Shallow Aquifer System
… to produce a two-dimensional unconfined aquifer viewpoint groundwater model. Site characterization, setup, and rationale are provided. The modeling methodology including calibration, sensitivity analysis, non-unique solution check, and verification are also provided. The modeling …
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Modeling nonpoint-source uranium pollution in an irrigated stream-aquifer system: calibration and simulation
… model for assessing U pollution in a stream-aquifer system within a large irrigated area. To achieve this, a computational model is built and tested that can predict with reasonable accuracy how U, along with Se and NO3, are mobilized and move within a coupled system of streams and …
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Development of a model for simulation of solute transport in a stream aquifer system
… for simulation of solute transport in a stream-aquifer system is developed. The model is referred to as: Model for Stream-Aquifer Solute Transport or MSAST. The MSAST is developed by coupling four primary models: The groundwater flow model, MODFLOW-96, the coupled groundwater surface water …
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Geologic and Geochemical Characterization of Cross-Communication Potential within the Northern Edwards Aquifer System, Texas
<p>The Edwards Aquifer is a large, complex groundwater system located throughout Central Texas in association with the Balcones Fault Zone. The San Antonio and Barton Spring segments of the Edwards Aquifer have been extensively studied in the past because they provide groundwater resources to the …
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Investigating the Impact of Aquifer Long Term Replenishment on the Potomac Aquifer System in Virginia
… in the potentiometric surface in the Potomac Aquifer System (PAS). With water levels falling, communities are at risk of wells running dry, saltwater intrusion, and land subsidence. The Sustainable Water Initiative for Tomorrow (SWIFT) project is an aquifer long-term replenishment (ALTR) …
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Arsenic transport in groundwater, surface water, and the hyporheic zone of a mine-influenced stream-aquifer system
… surface water and the hyporheic zone in a stream-aquifer system influenced by an abandoned arsenopyrite mine. Mine tailing piles consisting of a host of arsenic-bearing minerals including arsenopyrite and scorodite remain adjacent to the stream and represent a continuous source of arsenic. Arsenic …
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A Numerical and Statistical Analysis of the Fractured Rock Aquifer System in Ploemeur, France to Quantify Local and Regional Recharge
… and the highly heterogeneous nature of the aquifer systems being monitored. The difficulty surrounding recharge quantification is compounded when considering a fractured rock aquifer system, where classification and modeling is complicated by highly complex structural geology. However, the …
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Analysis of a Multi-Aquifer System in the Southern Coastal Plain of Virginia by Trial and Error Model Calibration to Observed Land Subsidence
… rise and land subsidence associated with aquifer compaction from excessive groundwater pumping. Detailed time-series of cumulative compaction data (land subsidence) from the three U.S. Geological Survey deployed extensometers in the regions, along with cyclical piezometer data, reflect the …
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Limits for the use of thermal waters on the example of the conceptual model of the Benesov-Usti aquifer system of the Bohemian Cretaceous basin
Limity využívání termálních vod na příkladu konceptuálního modelu benešovsko- ústeckého zvodněného systému české křídové pánve Doktorská disertační práce Résumé / souhrn RNDr. Josef V. DATEL Náplní výzkumné práce bylo shromáždění veškerých dostupných dat o geologických podmínkách a výskytu podzemní …
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Blue Gold – The Utilisation of the Nubian Sandstone Aquifer System in Light of Islamic Norms and its Impact on the Emerging Law of Transboundary Fossil Aquifers
The Nubian Sandstone Aquifer System is one of the world’s largest transboundary fossil aquifers and stretches underneath the territories of the North African States of Egypt, Libya, Sudan and Chad. All four States have strong Islamic cultural backgrounds, and Egypt, Libya and Sudan have enshrined …
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Characterization and modeling of land subsidence due to groundwater withdrawals from the confined aquifers of the Virginia Coastal Plain
Measurement and analysis of aquifer-system compaction have been used to characterize aquifer and confining unit properties when other techniques such as flow modeling have been ineffective at adequately quantifying storage properties or matching historical water levels in environments experiencing …
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Remote Sensing of 21st Century Water Stress for Hazard Monitoring in California
… groundwater overdraft of the Central Valley Aquifer. This groundwater overdraft has led to poroelastic compaction of the aquifer system and subsidence of the land surface. Water mass loss also causes elastic deformation of the solid Earth, an opposite and smaller amplitude response than the …
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