SWRC Fit

SWRC Fit permet d’ajuster différents modèles de rétention de l’eau du sol avec des valeurs mesurées. Copiez vos données mesurées (pression, teneur en eau) dans la zone de texte ci-dessous et appuyez sur le bouton "Calculer". Vous pouvez choisir des exemples de données dans le menu déroulant.

Model selection

Brooks and Corey
van Genuchten
Kosugi
Fredlund and Xing
dual-BC-CH
VG₁BC₂-CH
dual-VG-CH
KO₁BC₂-CH
dual-BC
dual-VG
dual-KO

Figure option
Show only one model

la courbe de rétention d’eau du sol

Show more options (Update on 2024-06-04)

[News]

This is a completely new version of SWRC Fit with bimodal models in this publication.
Improvement of dual-VG model was implemented.
Please also check UNSODA viewer, unsatfit and hystfit.

Format of input data

As in the sample data, each line of numeric data represents a set of measured (h, θ) in this order. Any unit can be used.
For each line, parameters are separated with space, tab, or comma (,).
When there are more than 2 numbers only the first 2 numbers are read.
Lines not beginning with numbers are not regarded as measured data.

Sample output

Tukabaru, Miyazaki, Japan (UNSODA 4800)
Texture: Loam
List of figures

Citation

Please cite this paper when you publish your work using this program, SWRC Fit or unsatfit. SWRC Fit uses unsatfit library.

Seki, K., Toride, N., & Th. van Genuchten, M. (2023) Evaluation of a general model for multimodal unsaturated soil hydraulic properties. J. Hydrol. Hydromech. 71(1): 22-34. https://doi.org/10.2478/johh-2022-0039

Acknowledgement

Sample data is from UNSODA database of unsaturated soil hydraulic properties developed by US Salinity Laboratory. See UNSODA viewer for more data.
Dr. Philippe Ackerer corrected French.

Question

Please send questions and bug reports to Q&A at unsatfit Discussions. Get GitHub account, sign in, and press the green "New discussion" button. I will reply by comment. It is preferable to send your question publicly this way, because other people having the same question can find answer on the web. However, if your question is confidential, for example when it includes your unpublished data, please contact me by email. You can find my email address in this paper.

SWRC Fit with unsatfit version 5.2 created by Katsutoshi Seki running with Python 3.11.2 on Linux. Run local server.

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