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RECORD NUMBER: 14 OF 20

Main Title Simplified Analysis of Two-Well Tracer Tests in Stratified Aquifers.
Author Gueven, O.; Falta, R. W.; Molz, F. J.; Melville, J. G.;
CORP Author Auburn Univ., AL. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1986
Report Number EPA/600/J-86/029;
Stock Number PB86-190196
Subjects Aquifers; Stratification; Water wells; Tracer studies; Mathematical models; Thickness; Hydrodynamics; Dispersing; Field tests; Hydraulic conductivity; Reprints;
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB86-190196 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 11p
Abstract The paper illustrates several interesting effects of aquifer stratification on the results of two-well tracer tests by means of a simplified computer model. In the model, it is assumed that the aquifer is horizontal, confined, of constant thickness and porosity, and perfectly stratified in the vicinity of the test wells. The non-uniform advection pattern is taken into account in detail by the model, but the local hydrodynamic dispersion is completely neglected. The simplified model has been verified in part by comparisons with available analytical solutions valid for homogeneous aquifers and in part by comparisons with the results of a two-well field experiment of Pickens and Grisak (1981a) which was performed in a locally stratified aquifer. The applications of the model to several field situations with assumed values of the relevant parameters show that the concentration versus time breakthrough curve measured at the withdrawal well during a standard two-well test would be very sensitive to variations of the hydraulic conductivity in the vertical.
Supplementary Notes Pub. in Ground Water, v24 n1 p63-71 Jan/Feb 86. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK.
NTIS Title Notes Journal article.
Title Annotations Reprint: Simplified Analysis of Two-Well Tracer Tests in Stratified Aquifers.
PUB Date Free Form Feb 86
Category Codes 8H; 48G; 48B
NTIS Prices PC A02/MF A01
Primary Description 600/15
Document Type NT
Control Number 618818314
Cataloging Source NTIS/MT
Origin NTIS
Type CAT


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