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Main Title Macrodispersion and spatial variability of hydraulic conductivity in a sand and gravel aquifer, Cape Cod, Massachusetts /
Author Hess, K. M. ; Wolf, S. H. ; Cella, M. A. ; Garabedian, S. P.
Other Authors
Author Title of a Work
Hess, Kathryn M.
CORP Author Geological Survey, Marlborough, MA. ;Massachusetts Inst. of Tech., Cambridge. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory,
Year Published 1991
Report Number EPA/600-M-91-005
Stock Number PB91-242370
OCLC Number 23674232
Subjects Hydrogeology--Massachusetts--Cape Cod ; Aquifers--Massachusetts--Cape Cod ; Soil permeability--Massachusetts--Cape Cod
Additional Subjects Research and development ; Aquifers ; Tracer studies ; Environmental transport ; Hydraulic conductivity ; Water pollution ; Spatial distribution ; Path of pollutants ; Stochastic processes ; Statistical analysis ; Sand aquifers ; Gravels ; Ground water ; Bromides ; Cape Cod(Massachusetts) ; Macrodispersion
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  EPA/600/M-91/005 Region 1 Library/Boston,MA 05/25/2016
EJBD  EPA 600-M-91-005 Headquarters Library/Washington,DC 04/08/2013
ELBD ARCHIVE EPA 600-M-91-005 In Binder Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-M-91-005 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
EMBD  EPA/600/M-91/005 NRMRL/GWERD Library/Ada,OK 06/04/2004
NTIS  PB91-242370 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9 pages : illustrations, maps ; 28 cm.
A natural-gradient tracer test was conducted in which the transport of bromide, a nonreactive tracer, was monitored in a sand and gravel aqifer for two years. From analyses of spatial moments of the distribution of bromide at 16 times during the test, a dispersivity tensor was calculated for the field transport experiment. As a complementary effort, detailed investigations of the variability of K in the aquifer were made at the tracer-test site, and the stochastic transport equations developed by Gelhar and Axness (1983) were used in conjunction with the statistical analysis of the K data to estimate macrodispersion for the aquifer. Estimates of macrodispersivity based on the statistical analysis of the K distribution agreed well with the macrodispersivity calculated from the tracer test. Two methods of measuring K were also evaluated: permeameter analyses of cores and flowmeter tests in wells. Geostatistical analyses of these data yielded estimates of the mean, variance, and correlations scales for the K distribution in the aquifer.
Caption title. At head of title: Environmental research brief. Shipping list no.: 91-228-P. "Jan. 1991." Includes bibliographical references (pages 8-9). "EPA/600-M-91-005."