Contribution of Magneto-Telluric Method to Geothermal Development in El Salvador


Pedro A. Santos

Key Words:

MT survey, geothermal system, reservoir production, resistivity discontinuities, geothermal exploration, fracture characterization

Geo Location:

Berlin, El Salvador; Ahuachapan, El Salvador; Chipilapa, El Salvador; San Vicente, El Salvador


World Geothermal Congress




13. Geophysics



Paper Number:


File Size:


View File:


The Magneto-Telluric method (MT) is used in geothermal exploration programs as the only effective way to map resistivity variations from near surface to depths of several kilometres, given an estimated depth of the reservoir. In El Salvador this method has contributed to the development of the geothermal resources providing reliable information about the location and characterization of the most promising geothermal systems.
The geophysical interpretation for the Ahuachapán geothermal reservoir indicates that deep conductive rocks are present between Ahuachapán and Chipilapa.
The reservoir in the Berlin Geothermal field corresponds to an uplifted resistive layer at depth, corresponding to philitic and propillytic alteration facies, with resistivity values ranging form 40 to 90 ohm-m inside the resistive basement, at higher values, temperature inversion is attempted.
The San Vicente geothermal reservoir was associated with an uplifted resistive layer at depth as well as a positive residual gravity anomaly. The propillytic reservoir was intercepted by the first exploratory well.

ec2-44-192-38-49.compute-1.amazonaws.com, you have accessed 0 records today.

Press the Back button in your browser, or search again.

Copyright 2010, International Geothermal Association: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.

Attend the 2020 World Geothermal Congress, Iceland, 2020, click here for details.

Accessed by: ec2-44-192-38-49.compute-1.amazonaws.com (
Accessed: Tuesday 31st of January 2023 12:10:51 PM