SWRC Fit

ОГХ Приближение (SWRC Fit) может подгонять несколько гидравлических моделей почвы к измеренной Основная гидрофизическая характеристика (ОГХ, кривая водоудерживания). Прежде чем использовать исходные данные, вы увидите, как они работают, выбрав образец данных из выпадающего меню.

[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

Seelow, Germany (UNSODA 2362)
Texture: Clay
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.
Acknowledgement for translation is shown in each language page. I speak only English and Japanese. Help in language is always welcome.

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 However, if your question is confidential, for example when it includes your unpublished data, please contact me by email.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.

This service has been running for 17 years.