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INVERSE SOLUTION OF HYDRAULIC DIFFUSIVITY DETERMINED BY WATER LEVEL FLUCTUATION 1
Author(s) -
Shih David ChingFang
Publication year - 1999
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1999.tb05450.x
Subject(s) - thermal diffusivity , aquifer , hydraulic conductivity , water level , groundwater , steady state (chemistry) , hydrology (agriculture) , soil science , alluvium , specific storage , inverse , magnitude (astronomy) , geology , environmental science , geotechnical engineering , geomorphology , thermodynamics , physics , chemistry , mathematics , soil water , geometry , groundwater recharge , cartography , astronomy , geography
This study uses the spectral analysis to inversely solve for hydraulic diffusivity of a one‐dimensional aquifer with boundaries subject to non‐steady state water level fluctuation. Given water level spectra obtained from observation wells and tidal gauge stations, hydraulic diffusivity of a confined aquifer in a Quaternary alluvial plain is found to be about 1.8×10 6 m 2/ hr which is one order of magnitude higher than the value obtained from a local pump test performed in the same area.