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Effect of Shallow Penetration and Streambed Sediments on Aquifer Response to Stream Stage Fluctuations (Analytical Model)
Author(s) -
Zlotnik Vitaly A.,
Huang Huihua
Publication year - 1999
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1999.tb01147.x
Subject(s) - stage (stratigraphy) , geology , aquifer , penetration (warfare) , geotechnical engineering , hydrology (agriculture) , soil science , geomorphology , groundwater , engineering , paleontology , operations research
An analytical model of stream‐aquifer interaction is proposed that considers the effects from a small degree of aquifer penetration and low‐permeability sediments on the head response to an arbitrary stream‐stage hydrograph. Aquifer sections under the stream and beyond are considered in a single model. The model of ground water flow in the aquifer is based on the Dupuit assumptions corrected for leakage from the stream. The model can use stream‐stage hydrographs in both analytical and tabular forms. The nondimensional linear boundary value problem is solved for hydraulic head in the aquifer using numerical Laplace transforms and a convolution algorithm. The proposed solution is used to assess the impact of shallow penetration and low‐permeability streambed sediments on head responses by comparison with available solutions which neglect these factors.