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Geothermal Energy Association
209 Pennsylvania Ave SE
Washington, DC 20003
United States

No. of Employees: 6
Key Personnel: Exec Dir: Karl Gawell
Phone: 202-454-5261
Fax: 202-454-5265

Geothermal Visual: Seismograph Record of Passing Trains Vs. EGS Stimulation

Courtesy of Trenton Cladouhos, Senior Vice President R&D, AltaRock Energy

This photo shows a seismograph record from an instrument in La Pine, Oregon, the nearest town to AltaRock Energy’s Newberry Enhanced Geothermal Systems (EGS) demonstration, on the day of the project’s largest microseismic event on December 7, 2012.

The seismograph shows that at this site the ground motion of six passing trains produced a much greater effect than the largest hydraulic stimulation event (Mw 2.4), which was not even detected by this instrument. EGS can cause “hundreds of small microseismic events” (National Research Council); these events are several thousands of times smaller than is noticeable.

Trenton Cladouhos, Senior Vice President R&D, of AltaRock Energy featured the graph in his November 13 presentation on geothermal technology and its evolving applications at the POWER-Gen/Renewable Energy World North America Conference and Expo in Orlando.

This blog was originally published in the GEA Geothermal Weekly newsletter and was republished with permission.


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