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The value of grain‐size hydraulic conductivity estimates: Comparison with high resolution in‐situ field hydraulic conductivity
Author(s) -
Eggleston J.,
Rojstaczer S.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl012772
Subject(s) - hydraulic conductivity , grain size , conductivity , permeability (electromagnetism) , soil science , aquifer , geology , mineralogy , geotechnical engineering , geomorphology , soil water , groundwater , physics , genetics , quantum mechanics , membrane , biology
Hydraulic conductivity is commonly estimated from grain size characteristics of unconsolidated sediments. We present an extensive set of air‐permeability and grain size measurements from a heterogeneous aquifer. These data are unique in that the hydraulic conductivity measurements are made on undisturbed in‐situ sediment and, like the grain size measurements, have a small sample volume size (<1200 cm³). Hydraulic conductivity estimated from grain‐size has a higher mean and a lower variance than direct measurements. While grain size estimates of hydraulic conductivity do not correspond well to field measured hydraulic conductivity, spatial correlation of the two data sets is quite similar.