Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Vadose Zone Journal Signup for GSW Email News
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dowman, C. E.
Right arrow Articles by Callegary, J. B.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Published in Vadose Zone Journal 2:595-601 (2003)
© 2003 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA

SPECIAL SECTION - ADVANCES IN MEASUREMENT AND MONITORING METHODS

Quantifying Ephemeral Streambed Infiltration from Downhole Temperature Measurements Collected Before and After Streamflow

Charles E. Dowman, Va, Ty P.A. Ferré*,c, John P. Hoffmannb, Dale F. Ruckerc and James B. Callegaryc

a USGS, Water Resources Discipline, 520 North Park Ave. Ste. 221, Tucson, AZ 85719 and University of Arizona, Department of Hydrology and Water Resources, 1133 E. North Campus Dr. Bldg. 11, Tucson, AZ 85721
b USGS, Water Resources Discipline, 520 North Park Ave., Ste. 221, Tucson, AZ 85719
c University of Arizona, Department of Hydrology and Water Resources, 1133 E. North Campus Dr. Bldg. 11, Tucson, AZ 85721

Correspondence: * Corresponding author (ty{at}hwr.arizona.edu).

Received for publication 16 December 2002. A constant flux infiltration experiment was conducted to determine the feasibility of using downhole temperature measurements to estimate infiltration flux. Temperatures measured using a downhole thermistor within a 15.4-m-deep borehole compare well with temperatures measured with buried thermocouples in an adjacent borehole to 5 m depth. Numerical forward model simulations were conducted using VS2DI. A numerical sensitivity analysis showed that the temperature profile was most sensitive to the average temperature of the infiltrating water, the infiltration flux, and the specific heat capacity of dry soil. The high sensitivity of these variables allows for a simple sequential optimization to be used to estimate the average temperature of the infiltrating water, the water flux, and the specific heat capacity of dry soil from numerical inversion of temperature measurements. Downhole temperature measurements could be a useful complement to shallow streambed temperature methods, allowing for better quantification of the contribution of streambed infiltration to basin-scale recharge.

Abbreviations: TDR, time domain reflectometry






JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Soil Science Society of America