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OLS Field Name OLS Field Data
Main Title Large-Scale Natural Gradient Tracer Test in Sand and Gravel, Cape Cod, Massachusetts 3, Hydraulic Conductivity Variability and Calculated Macrodispersivities.
Author Hess, K. M. ; Wolf, S. H. ; Celia, M. A. ;
CORP Author Geological Survey, Marlborough, MA. Water Resources Div. ;ENSR Consulting and Engineering, Acton, MA. ;Princeton Univ., NJ. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/359;
Stock Number PB93-107050
Additional Subjects Water pollution ; Subsurface investigations ; Environmental transport ; Tracer techniques ; Porous media ; Ground water ; Aquifer characteristics ; Dispersion ; Hydraulic conductivity ; Hydrology ; Path of pollutants ; Stochastic processes ; Study estimates ; Reprints ; Cape Cod(Massachusetts) ; Macrodispersion
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NTIS  PB93-107050 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1993
Collation 22p
Abstract Hydraulic conductivity (K) variability in a sand and gravel aquifer on Cape Cod, Massachusetts, was measured and subsequently used in stochastic transport theories to estimate macrodispersivities. Nearly 1500 K measurements were obtained by borehole flowmeter tests and permeameter analyses of cores. The geometric mean for the flowmeter tests (0.11 cm/s) is similar to that estimated from other field tests. The mean for the permeameter tests (0.035 cm/s) is significantly lower, possibly because of compaction of the cores. The variance for the flowmeter (0.24) is also greater than that for the permeameter (0.14). Geostatistical analyses applying negative exponential models with and without nuggets reveal similar spatial correlation structures for the two data sets. Estimated correlation scales range from 2.9 to 8 m in the horizontal and from 0.18 to 0.38 m in the vertical. Estimates of asymptotic longitudinal dispersivity (0.35-0.78 m) are similar in magnitude to that observed in the natural gradient tracer test (0.96 m) previously conducted at the site. (Copyright (c) 1992 by the American Geophysical Union.)
Supplementary Notes Pub. in Water Resources Research, v28 n8 p2011-2027 Aug 92. See also PB91-216275. Prepared in cooperation with ENSR Consulting and Engineering, Acton, MA., and Princeton Univ., NJ. Dept. of Civil Engineering. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK.
NTIS Title Notes Journal article.
Title Annotations Reprint: Large-Scale Natural Gradient Tracer Test in Sand and Gravel, Cape Cod, Massachusetts 3, Hydraulic Conductivity Variability and Calculated Macrodispersivities.
Category Codes 68D; 48G
NTIS Prices PC A03/MF A01
Primary Description 600/15
Document Type NT
Cataloging Source NTIS/MT
Control Number 234225497
Origin NTIS
Type CAT