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Updating random hydraulic conductivity fields: A two‐step procedure
Author(s) -
Massmann Joel W.,
Freeze R. Allan
Publication year - 1989
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr025i007p01763
Subject(s) - hydraulic conductivity , hydrogeology , groundwater , field (mathematics) , bayesian probability , random field , groundwater model , soil science , geology , hydrology (agriculture) , geotechnical engineering , groundwater flow , environmental science , statistics , statistical physics , mathematics , aquifer , physics , pure mathematics , soil water
Predictions of groundwater travel times at field sites are generally uncertain because of uncertainty and variability in hydrogeological parameters, especially the hydraulic conductivity, K . Uncertainty is a subjective value that depends upon the person performing the analysis. Variability is an objective, though likely unknown, value that depends upon geology and depositional environment. Uncertainty and variability can be combined by treating hydraulic conductivity as a random field in a Bayesian framework [ Hachich and Vanmarcke , 1983; Massmann and Freeze , 1987].