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Showing 1 to 8 of 8 for “"groundwater flow models"”.
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Fréchet Sensitivity Analysis and Parameter Estimation in Groundwater Flow Models
… corresponding to a multilayer aquifer/interbed groundwater flow model. The parameter estimation problem is formulated as an optimization problem, then addressed with algorithms based on adjoint equations, quasi-Newton schemes, and multilevel optimization. In addition to the parameter estimation …
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Evaluation of Capture Analysis Bias Associated with Use of Nonlinear Groundwater Flow Models
… western U.S. typically recognizes surface and groundwater as different sources of water. Because these two systems are often truly connected, groundwater pumping can deplete surface water and is contributing to more frequent litigation by surface water right holders. Surface and groundwater …
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Contribution of Recharge Along Regional Flow Paths to Discharge at Ash Meadows, Nevada
… Ash Meadows, Nevada wetland area are discharging groundwater at a high volume that cannot be sustained by local, present-day precipitation and associated recharge. Previous groundwater flow models for this region have required groundwater to flow through complex geology for long distances (160km) …
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Use of data-driven models to improve prediction of physically based groundwater models
Current analyses of groundwater flow and transport typically rely on a physically-based model (PBM), which is inherently subject to error and uncertainty from multiple sources including model structural error, parameter error and data error. The model uncertainty can be difficult to quantify, and …
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Characterizing Stream-Aquifer Interactions in the Pedernales Watershed in Central Texas
… information is necessary before the effects of groundwater pumping on streamflow, or the effects of surface-water runoff on aquifer recharge, can be assessed. Traditional techniques to analyze stream-aquifer interaction are based on digital groundwater flow models; however, aquifer parameters …
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Satellite remote sensing for improvement of groundwater characterisation
Groundwater, the water stored in the subsurface, plays an essential role in water provision for domestic, industrial and agricultural use. Groundwater is also vital for ecology and environment, since it provides base flow to many streams, rivers and wetlands. Groundwater demand in New Zealand has …
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Groundwater quantity and quality assessment for aquifer recharge in Ohangwena region, Namibia
… pressure on the local water balance. As groundwater demands increase and availability declines, sustainable groundwater management is required for the Ohangwena region. This thesis assessed the suitability of using runoff for aquifer recharge to augment groundwater in the Ohangwena region …
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A HYDROLOGICAL INVESTIGATION OF THREE DEVON SAND DUNE SYSTEMS; BRAUNTON BURROWS, NORTHAM BURROWS AND DAWLISH WARREN
… characteristics and functioning of the groundwater system. Braunton Burrows was the main study site of the research. At both Northam and Dawlish, at the start of the fieldwork programme a dipwell monitoring network was installed and water table elevations were recorded weekly. …