About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in SSSAJ

  1. Vol. 75 No. 1, p. 241-245
     
    Received: Sept 17, 2009


    * Corresponding author(s): kclancy@uwsp.edu
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2136/sssaj2009.0355N

Temperature and Time of Day Influence on Double-Ring Infiltrometer Steady-State Infiltration Rates

  1. Katherine Clancy *a and
  2. Veronica M. Albab
  1. a College of Natural Resources, Univ. of Wisconsin-Stevens Point, 800 Reserve St., Stevens Point, WI 54481
    b USDA-NRCS, Union Grove Service Center, 1012 Vine St., Union Grove, WI 53182

Abstract

Steady-state infiltration rates (IRs) correlate well with temperature. They have been observed, however, to have values 1.5 to 2.5 times higher than predicted by viscosity, known as the t-effect Many field studies that have observed the t-effect used continuous IR measurement systems. We measured 67 IRs using double-ring infiltrometers (DRIs) during the 2007 and 2008 autumn seasons in sand and loamy sand soils across a temperature range of 5 to 35°C. We found above-average to good correlation between temperature and IR. For loamy sand (n = 17), IR rate differences were accounted for by viscosity differences, but for sand (n = 30) the IR values were 2.0 to 2.9 times higher than the viscosity-predicted rate. Additionally, we found a difference in the IR temperature regressions based on the time of day of the measurements in the sand. Morning measurements were two times the viscosity-predicted IR, while afternoon measurements were nearly three times. This research corroborates other field studies that observed the t-effect using DRIs.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 2011. Soil Science SocietySoil Science Society of America