| Main Title |
Natural Gradient Experiment on Solute Transport in a Sand Aquifer: Spatial Variability of Hydraulic Conductivity and Its Role in the Dispersion Process. |
| Author |
Sudicky, E. A. ;
|
| CORP Author |
Waterloo Univ. (Ontario). Inst. for Ground Water Research.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Year Published |
1986 |
| Report Number |
EPA/600/J-86/327; |
| Stock Number |
PB87-176657 |
| Additional Subjects |
Aquifers ;
Sand filters ;
Hydraulic conductivity ;
Solutes ;
Transport properties ;
Dispersing ;
Ground water ;
Water pollution ;
Gradients ;
Reprints ;
Foreign technology ;
Tracer studies
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-176657 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
16p |
| Abstract |
The spatial variability of hydraulic conductivity at the site of a long-term tracer test performed in the Borden aquifer was examined in great detail by conducting permeability measurements on a series of cores taken along two cross sections. Along the two cross sections, a regular-spaced grid of hydraulic conductivity data revealed that the aquifer is comprised of numerous thin, discontinuous lenses of contrasting hydraulic conductivity. A value for the longitudinal macrodispersivity calculated from statistical parameters using three-dimensional stochastic transport theory developed by L.W. Gelhar and C.L. Axness (1983) is about 0.6 m. For the vertically averaged case, the two-dimensional theory developed by G. Dagan (1982, 1984) yields a longitudinal dispersivity equal to 0.45 m. Use of the estimated statistical parameters describing the 1n (K) variability in Dagan's transient equations closely predicted the observed longitudinal and horizontal transverse spread of the tracer with time. (Copyright (c) 1986 by the American Geophysical Union.) |
| Supplementary Notes |
Pub. in Water Resources Research, v22 n13 p2069-2082 Dec 86. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Natural Gradient Experiment on Solute Transport in a Sand Aquifer: Spatial Variability of Hydraulic Conductivity and Its Role in the Dispersion Process. |
| PUB Date Free Form |
c1986 |
| Category Codes |
68D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
716921196 |
| Origin |
NTIS |
| Type |
CAT |
