SSSAJ Grow Your Career with SSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Soil Sci Soc Am J 58:687-695 (1994)
© 1994 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
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 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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Eching, S. O.
Right arrow Articles by Wendroth, O.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Eching, S. O.
Right arrow Articles by Wendroth, O.
Agricola
Right arrow Articles by Eching, S. O.
Right arrow Articles by Wendroth, O.

Unsaturated Hydraulic Conductivity from Transient Multistep Outflow and Soil Water Pressure Data

S. O. Eching and J. W. Hopmans*

Hydrologic Science, Dep. of Land, Air, and Water Resources, Veihmeyer Hall, Univ. of California, Davis, CA 95616

O. Wendroth

Institut für Bodenforschung Zentrum für Agrarlandschafts-und Landnutzungsforshung, Wilhelm-Pieck-Straße 72, 0-1278 Müncheberg, Germany

*Corresponding author (jwhopmans{at}ucdavis.edu).

ABSTRACT

Soil water retention and unsaturated hydraulic conductivity functions [K({theta})] estimated by the inverse solution technique through minimization of differences between measured and simulated transient outflow may be nonunique and differ from independently measured soil hydraulic data. Numerical and experimental studies have shown the benefit of using simultaneously measured soil water pressure head in the estimation of the soil water retention curve by the inverse technique. In this experimental study, soil water pressure head and transient cumulative outflow measured simultaneously are used to estimate K({theta}). An alternative method for the direct measurement of K({theta}) from transient multistep outflow experiments was adopted. Desorption experiments were carried out for disturbed Yolo silt loam (fine-silty, mixed, nonacid, thermic Typic Xerorthent), Panoche loam (fine-loamy, mixed [calcareous], thermic Typic Torriorthent), Hanford sandy loam (coarse-loamy, mixed, nonacid, thermic Typic Xerorthent), and Oso Flaco fine sand columns. The optimized K({theta}) values agreed well with the directly measured data for all soils, except the sand. Additionally, soil hydraulic functions so obtained for the Panoche loam agreed well with those determined using the evaporation method. Measured infiltration in a column of the Panoche loam matched numerical results using optimized parameters as determined from a sorption multistep experiment. The addition of soil water pressure head values in the optimization procedure provides unique parameters for the unsaturated hydraulic conductivity functions under our experimental conditions.

Received for publication March 19, 1993.


This article has been cited by other articles:


Home page
 Vadose Zone JHome page
E. Segal, S. A. Bradford, P. Shouse, N. Lazarovitch, and D. Corwin
Integration of Hard and Soft Data to Characterize Field-Scale Hydraulic Properties for Flow and Transport Studies
Vadose Zone J., August 1, 2008; 7(3): 878 - 889.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
J. A. Vrugt, P. H. Stauffer, Th. Wohling, B. A. Robinson, and V. V. Vesselinov
Inverse Modeling of Subsurface Flow and Transport Properties: A Review with New Developments
Vadose Zone J., May 27, 2008; 7(2): 843 - 864.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
J. S. Price, P. N. Whittington, D. E. Elrick, M. Strack, N. Brunet, and E. Faux
A Method to Determine Unsaturated Hydraulic Conductivity in Living and Undecomposed Sphagnum Moss
Soil Sci. Soc. Am. J., February 15, 2008; 72(2): 487 - 491.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
A. Tuli, J. W. Hopmans, D. E. Rolston, and P. Moldrup
Comparison of Air and Water Permeability between Disturbed and Undisturbed Soils
Soil Sci. Soc. Am. J., August 4, 2005; 69(5): 1361 - 1371.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
Y. Mori, J. W. Hopmans, A. P. Mortensen, and G. J. Kluitenberg
Estimation of Vadose Zone Water Flux from Multi-Functional Heat Pulse Probe Measurements
Soil Sci. Soc. Am. J., April 11, 2005; 69(3): 599 - 606.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
S. Finsterle
Multiphase Inverse Modeling: Review and iTOUGH2 Applications
Vadose Zone J., August 1, 2004; 3(3): 747 - 762.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
B. Minasny, J. W. Hopmans, T. Harter, S. O. Eching, A. Tuli, and M. A. Denton
Neural Networks Prediction of Soil Hydraulic Functions for Alluvial Soils Using Multistep Outflow Data
Soil Sci. Soc. Am. J., March 1, 2004; 68(2): 417 - 429.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
Y. Mori, Y. Mori, J. W. Hopmans, A. P. Mortensen, and G. J. Kluitenberg
Multi-Functional Heat Pulse Probe for the Simultaneous Measurement of Soil Water Content, Solute Concentration, and Heat Transport Parameters
Vadose Zone J., November 1, 2003; 2(4): 561 - 571.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
H. Fujimaki, H. Fujimaki, and M. Inoue
A Transient Evaporation Method for Determining Soil Hydraulic Properties at Low Pressure
Vadose Zone J., August 1, 2003; 2(3): 400 - 408.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
H. Fujimaki, H. Fujimaki, and M. Inoue
Reevaluation of the Multistep Outflow Method for Determining Unsaturated Hydraulic Conductivity
Vadose Zone J., August 1, 2003; 2(3): 409 - 415.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
J. A. Vrugt, J. A. Vrugt, W. Bouten, H. V. Gupta, and J. W. Hopmans
Toward Improved Identifiability of Soil Hydraulic Parameters: On the Selection of a Suitable Parametric Model
Vadose Zone J., February 1, 2003; 2(1): 98 - 113.
[Abstract] [Full Text] [PDF]

Home page
 Vadose Zone JHome page
G. L. Butters, G. L. Butters, and P. Duchateau
Continuous Flow Method for Rapid Measurement of Soil Hydraulic Properties: I. Experimental Considerations
Vadose Zone J., November 1, 2002; 1(2): 239 - 251.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
J. A. Vrugt and W. Bouten
Validity of First-Order Approximations to Describe Parameter Uncertainty in Soil Hydrologic Models
Soil Sci. Soc. Am. J., November 1, 2002; 66(6): 1740 - 1751.
[Abstract] [Full Text] [PDF]

Home page
 Soil Sci.Home page
C. M. P. Vaz and J. W. Hopmans
Simultaneous Measurement of Soil Penetration Resistance and Water Content with a Combined Penetrometer-TDR Moisture Probe
Soil Sci. Soc. Am. J., January 1, 2001; 65(1): 4 - 12.
[Abstract] [Full Text]

Home page
 Soil Sci.Home page
J.A. Vrugt, W. Bouten, and A.H. Weerts
Information Content of Data for Identifying Soil Hydraulic Parameters from Outflow Experiments
Soil Sci. Soc. Am. J., January 1, 2001; 65(1): 19 - 27.
[Abstract] [Full Text]

Home page
 Soil Sci.Home page
D. Wildenschild, J.W. Hopmans, and J. Simunek
Flow Rate Dependence of Soil Hydraulic Characteristics
Soil Sci. Soc. Am. J., January 1, 2001; 65(1): 35 - 48.
[Abstract] [Full Text]

Home page
 Soil Sci.Home page
V. Bagarello, M. Iovino, and G. Tusa
Factors Affecting Measurement of the Near-Saturated Soil Hydraulic Conductivity
Soil Sci. Soc. Am. J., July 1, 2000; 64(4): 1203 - 1210.
[Abstract] [Full Text]

Home page
 Soil Sci.Home page
L. M. Arya, F. J. Leij, P. J. Shouse, and M. Th. van Genuchten
Relationship between the Hydraulic Conductivity Function and the Particle-Size Distribution
Soil Sci. Soc. Am. J., September 1, 1999; 63(5): 1063 - 1070.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1994 by the Soil Science Society of America.