HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free An erratum has been published Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (27) Citing Articles via Google Scholar Google Scholar Articles by Cortis, A. Articles by Berkowitz, B. Search for Related Content PubMed Articles by Cortis, A. Articles by Berkowitz, B. GeoRef GeoRef Citation Agricola Articles by Cortis, A. Articles by Berkowitz, B. Related Collections Solute Transport Models Dispersion Preferential Flow

DIVISION S-1—SOIL PHYSICS

Anomalous Transport in "Classical" Soil and Sand Columns

Dep. of Environmental Sciences and Energy Research, Weizmann Institute of Science, 76100 Rehovot, Israel

^* Corresponding author (brian.berkowitz{at}weizmann.ac.il)

We re-examine—in light of recent theoretical developments—classical experiments on dispersion of a passive tracer in fully and partially saturated porous columns. We find that the dispersion breakthrough curves (BTCs) exhibit anomalous (non-Fickian) early arrival times and late time tailing, which can be explained by the Continuous Time Random Walk (CTRW) theory. The CTRW framework includes as a special case the classical advection-dispersion equation (ADE) for Fickian transport. We argue that existing measurements and interpretations of dispersion should be carefully reconsidered in the framework of these advances in conceptual understanding and quantification.

Abbreviations: ADE, advection-dispersion equation • BTC, breakthrough curve • CTRW, continuous time random walk

This article has been cited by other articles:

				F. Delay, P. Ackerer, and C. Danquigny Simulating Solute Transport in Porous or Fractured Formations Using Random Walk Particle Tracking: A Review Vadose Zone J., May 12, 2005; 4(2): 360 - 379. [Abstract] [Full Text] [PDF]