CONFINED AQUIFER RESPONSES TO PUMPING – POTENTIAL IMPACTS ON PLUME MIGRATION
Authors: Masterson, Kristina Kirkyla; Gamache, Matthew; Fitzgerald, Robert
Source: Proceedings of the Water Environment Federation, WEFTEC 2007: Session 61 through Session 70 , pp. 4778-4787(10)
Publisher: Water Environment Federation
Abstract:Pressure waves are transmitted in confined aquifers with relatively little damping compared with surficial phreatic aquifers. Confined aquifers may therefore be subject to abrupt and far-reaching changes in the rate and direction of groundwater flow due to changes in well pumping. Where there is a mechanism for contaminants to reach a confined aquifer, the contaminant migration within the aquifer can be significantly influenced by flow field variability. A groundwater flow and mass transport study recently conducted for a site in Nassau County, New York had to account for rapid flow changes and complete 360-degree variability in groundwater flow direction over time. Study results were presented using animations, which clearly illustrated the dynamic nature of groundwater flow patterns within the confined aquifer.
Document Type: Research Article
Publication date: 2007
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