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Titolo:
THE 1978 BORDEN TRACER EXPERIMENT - ANALYSIS OF THE SPATIAL MOMENTS
Autore:
FARRELL DA; WOODBURY AD; SUDICKY EA;
Indirizzi:
UNIV MANITOBA,DEPT CIVIL & GEOL ENGN WINNIPEG R3T 2N2 MANITOBA CANADA UNIV WATERLOO,WATERLOO CTR GROUNDWATER RES WATERLOO N2L 3G1 ONTARIO CANADA
Titolo Testata:
Water resources research
fascicolo: 11, volume: 30, anno: 1994,
pagine: 3213 - 3223
SICI:
0043-1397(1994)30:11<3213:T1BTE->2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
NATURAL GRADIENT EXPERIMENT; SOLUTE TRANSPORT; SAND AQUIFER; STRATIFIED AQUIFER; SCALE DISPERSION; GROUNDWATER; MACRODISPERSION; MIGRATION; LANDFILL; SITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
D.A. Farrell et al., "THE 1978 BORDEN TRACER EXPERIMENT - ANALYSIS OF THE SPATIAL MOMENTS", Water resources research, 30(11), 1994, pp. 3213-3223

Abstract

A reanalysis of the 1978 tracer experiment at Borden, Ontario, is performed using spatial moments. The tracer experiment involved the uniform injection of chloride ions into an aquifer, and the resulting plumewas allowed to migrate under natural gradient conditions. Detailed monitoring of the evolving plume was then performed in three dimensions. The work of Sudicky et al. (1983) showed that the solute cloud evolved as two plumes owing to variations in hydraulic conductivity at the site. In this paper we compute the zeroth through the fourth spatial moments of the plume in the lower hydraulic conductivity zone. From these moments the solute mass of the plume, the velocity of the center of mass, the dispersion, the skew, and the kurtosis of the plume are calculated. These results are compared with the results of Sudicky et al. as well as with the theoretical results of Gelhar et al. (1979) and Naff (1990). Our computed plume velocity and apparent horizontal transverse macrodispersivity are in agreement with the estimates of Sudicky et al.; however, our apparent longitudinal macrodispersivity estimate exceeds that of Sudicky et al. by a factor of 2. The apparent horizontal transverse macrodispersivity obtained is also quite similar to that of Freyberg (1986). At early times, the plume is found to be positively skewed as well as platykurtic. This supports the findings of Gelhar et al. and contradicts those of Naff.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 12:50:54