VZJ
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published online 26 May 2006
Published in Vadose Zone J 5:684-696 (2006)
DOI: 10.2136/vzj2005.0076
© 2006 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Abstract Freely available
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
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 Similar articles in ISI Web of Science
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 ISI Web of Science (2)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ramos, T. B.
Right arrow Articles by Pires, F. P.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Ramos, T. B.
Right arrow Articles by Pires, F. P.
GeoRef
Right arrow GeoRef Citation
Agricola
Right arrow Articles by Ramos, T. B.
Right arrow Articles by Pires, F. P.
Related Collections
Right arrow Soil Physics
Right arrow Inverse Procedures/Parameter Estimation

Estimation of Soil Hydraulic Properties from Numerical Inversion of Tension Disk Infiltrometer Data

T. B. Ramosa,*, M. C. Gonçalvesa, J. C. Martinsa, M. Th. van Genuchtenb and F. P. Piresa

a Estação Agronómica Nacional, Quinta do Marquês, 2784-505 Oeiras, Portugal
b USDA-ARS, George E. Brown, Jr., Salinity Lab., 450 W. Big Springs Road, Riverside, CA 92507-4617

Figure 1
View larger version (21K):

[in a new window]
  		Fig. 1. Measured cumulative infiltration rates and corresponding fitted values from the final estimates of the inverse solution, at consecutive supply pressure heads of –15, –6, –3, and 0 cm for four surface horizons of soils in the Alentejo area of Portugal.

 

Figure 2
View larger version (28K):

[in a new window]
  		Fig. 2. Water retention, {theta}(h), and hydraulic conductivity, K(h), curves obtained through numerical inversion of the field-measured tension disk infiltrometer data (Runs A and B), by means of separate laboratory measurements (suction tables and pressure plates) followed by analysis with RETC, using the evaporation method on laboratory samples, and using Wooding's analysis. Results are for the surface layers of four soil profiles (LVgl1, LVgl2, LVgl3, and FLha) used in the experiments.

 

Figure 3
View larger version (15K):

[in a new window]
  		Fig. 3. Effect of a lower initial water content on the inverse estimated soil hydraulic functions [Run ({theta}i)], results obtained when water contents at –100 and –15000 kPa are included in the objective function [Run (pF)], and analysis with RETC.

 




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 2006 by the Soil Science Society of America.