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GEOLOGIC INFERENCE FROM “FLOW NET” TRANSMISSIVITY DETERMINATION: THREE CASE STUDIES 1
Author(s) -
Rice Wendy A.,
Gorelick Steven M.
Publication year - 1985
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.1752-1688.1985.tb00187.x
Subject(s) - groundwater flow , bedrock , hydraulic head , monte carlo method , geology , sensitivity (control systems) , groundwater , flow (mathematics) , hydrology (agriculture) , head (geology) , hydrogeology , field (mathematics) , aquifer , soil science , mathematics , statistics , geotechnical engineering , geomorphology , geometry , engineering , electronic engineering , pure mathematics
ABSTRACT A graphical inverse method for determining the regional transmissivity distribution was applied to three field problems. The study areas were the Hanford Site, Washington; the Rocky Mountain Arsenal, Colorado; and the Nevada Test Site, Nevada. This method can aid in flow system conceptualization by revealing the location of bedrock controls for groundwater flow. It is a valuable tool for aiding the hydrogeologist in asking questions about the nature of trends in the pattern of transmissivity values. Quantitative estimates of regional transmissivities can be used as starting points for further parameter refinement. Sensitivity analysis using Monte Carlo simulation shows that quantitative estimates of transmissivity can be obtained when measurement error in the hydraulic head does not cause a large error in the hydraulic gradient.