A freely available software dedicated to electrical conductivity calculations in geology


SIGMELTS is a software that aims at facilitating the modelling of the electrical properties of geological materials. It is based on electrical measurements from the literature performed on silicate liquids, carbonatites, minerals and mantle materials. The bulk conductivity of a two-phase material is proposed on the basis of various existing geometric models. This software is a tool that estimates the electrical response of a geological material at defined conditions. SIGMELTS also provides a “reverse” application, proposing to interpret a conductivity value in terms of storage conditions. This software enables to discriminate the effect of different parameters on the bulk conductivity of magmas, such as the temperature, the pressure, the composition, the water content, the oxygen fugacity and the crystal content. A major point of the philosophy that led to create SIGMELTS is the need for geophysical studies to use electrical measurements in laboratory in order to improve the interpretation of detected magnetotelluric anomalies.

Anne Pommier and Emmanuel Le Trong have elaborated this software. SIGMELTS is in the line with the previous studies performed by Pommier et al. on Mount Vesuvius (Pommier et al., JGR, 2008; Pommier et al., G-Cubed, 2010.).

Terms of use and disclaimer

You can use this program free of charge. If you encounter any problem to use it, please contact us. The use of Sigmelts is for non-commercial academic research only.

SIGMELTS is a client-side only web application written in JavaScript. As such all the computations and plotting are done within the browser. It relies on the jQuery framework for the interface and the Flotr library for the plots.

The program is provided on an "as is" basis. The authors (AP and ELT) and the ISTO disclaim all warranties, either expressed or implied, with regard to this program. In no event shall the Authors or the ISTO be liable for any indirect or consequential damages or any damages whatsoever resulting from the loss of use, data, or profits, arising out of or in connection with the use or performance of the program. To sum up, the use is at your own risk.

Details about how SIGMELTS was elaborated as well as how to use it are presented in "SIGMELTS: A web portal for electrical conductivity calculations in geosciences" by Pommier A. and Le Trong E., Computers and Geosciences, vol. 37, 1450-1459.


Anne Pommier, School of Earth and Space Exploration, Arizona State University, 550 Tyler Mall, Tempe, AZ 85287, USA.

Email: apommier@asu.edu Phone: +1-480-965-4214

This page was updated: 16 Dec. 2022.

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