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

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Rubin, J. Search for Related Content PubMed Articles by Rubin, J. GeoRef GeoRef Citation Agricola Articles by Rubin, J.

Numerical Method for Analyzing Hysteresis-Affected, Post-Infiltration Redistribution of Soil Moisture¹

ABSTRACT

An especially devised numerical procedure applied to the Darcian model of soil moisture flow makes it possible to analyze the post-infiltration redistribution of water in semi-infinite, vertical soil columns. The method takes into account the effects of hysteresis by making it possible to find, within the hysteretic system of curves, the unique curve which characterizes moisture transformations at each soil depth. The method can be applied to cases in which the moisture flux at soil surface is zero as well as to those in which the redistribut on is accompanied by constantrate evaporation.

The results obtained by applying the new method to data on moisture retention and conductivity of a sandy soil demonstrate the importance of hysteresis in the redistribution processes.

¹ Contribution from the Water Resources Division, US Geological Survey, Menlo Park, California. Presented before Div. S-1, Soil Science Society of America, Columbus, Ohio, Nov. 3, 1965.

² Research Soil Physicist, US Geological Survey, Menlo Park, California.

Received for publication June 17, 1966. Accepted for publication August 31, 1966.