A gas-phase partitioning tracer method for the in situ measurement of soil-water content

N. T. Nelson, Mark L Brusseau, T. D. Carlson, M. S. Costanza, M. H. Young, G. R. Johnson, P. J. Wierenga

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The purpose of this paper is to describe a gas-phase partitioning tracer method for the in situ measurement of soil-water content and to illustrate the application and performance of the tracer method in well-defined systems. The method is based on the use of a tracer test with nonpartitioning and partitioning tracers introduced into the system in the gas phase. Partitioning tracers dissolve into the water, which retards their gas-phase transport relative to that of the nonpartitioning tracers. Retardation of the partitioning tracers is a function of the amount of water present. The method provides an integrated field-scale value that complements smaller-scale methods, such as neutron moderation, and regional-scale methods based on remote sensing. Experiments were conducted in the laboratory and in a large weighing lysimeter to test the performance of the gas-phase partitioning tracer method. Soil-water contents estimated from the tracer tests were reasonably close to values obtained using gravimetric and time domain reflectometry measurements, indicating the tracer method has the potential to provide accurate measurements of soil-water content at the field scale.

Original languageEnglish (US)
Pages (from-to)3699-3707
Number of pages9
JournalWater Resources Research
Volume35
Issue number12
DOIs
StatePublished - Dec 1999

Fingerprint

in situ measurement
Water content
soil water content
tracer techniques
partitioning
Gases
soil water
tracer
water content
gases
Soils
gas
Lysimeters
Water
Weighing
Remote sensing
Neutrons
method
time domain reflectometry
testing

ASJC Scopus subject areas

  • Aquatic Science
  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology

Cite this

Nelson, N. T., Brusseau, M. L., Carlson, T. D., Costanza, M. S., Young, M. H., Johnson, G. R., & Wierenga, P. J. (1999). A gas-phase partitioning tracer method for the in situ measurement of soil-water content. Water Resources Research, 35(12), 3699-3707. https://doi.org/10.1029/1999WR900250

A gas-phase partitioning tracer method for the in situ measurement of soil-water content. / Nelson, N. T.; Brusseau, Mark L; Carlson, T. D.; Costanza, M. S.; Young, M. H.; Johnson, G. R.; Wierenga, P. J.

In: Water Resources Research, Vol. 35, No. 12, 12.1999, p. 3699-3707.

Research output: Contribution to journalArticle

Nelson, NT, Brusseau, ML, Carlson, TD, Costanza, MS, Young, MH, Johnson, GR & Wierenga, PJ 1999, 'A gas-phase partitioning tracer method for the in situ measurement of soil-water content', Water Resources Research, vol. 35, no. 12, pp. 3699-3707. https://doi.org/10.1029/1999WR900250
Nelson, N. T. ; Brusseau, Mark L ; Carlson, T. D. ; Costanza, M. S. ; Young, M. H. ; Johnson, G. R. ; Wierenga, P. J. / A gas-phase partitioning tracer method for the in situ measurement of soil-water content. In: Water Resources Research. 1999 ; Vol. 35, No. 12. pp. 3699-3707.
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