Micro-Earthquake At Coso Geothermal Area (1974)
Exploration Activity: Micro-Earthquake At Coso Geothermal Area (1974)
|Exploration Activity Details|
|Location||Coso Geothermal Area|
To determine the background level of seismicity before any drilling related to production takes place.
Two different arrays of portable high-gain seismographs were installed- measurements taken over thirty three days; completed 9 calibration blasts. The microearthquake activity changed considerably including days which had only a few events while others had as many as 100 or more distinct local events; more than two thousand events with S-P times of less than three seconds were detected; observed low value for Poisson's ratio which indicated that the Coso geothermal system is a vapor-dominated system rather than a hot-water system.
- Combs, J. (1 January 1975) Heat flow and microearthquake studies, Coso Geothermal Area, China Lake, California. Final report