Microearthquakes in the Ahuachapan Geothermal Field, El Salvador, Central America

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Science  23 Jul 1971:
Vol. 173, Issue 3994, pp. 328-330
DOI: 10.1126/science.173.3994.328


Microearthquakes occur on a steeply dipping plane interpreted here as the fault that allows hot water to circulate to the surface in the geothermal region. These small earthquakes are common in many geothermal areas and may occur because of the physical or chemical effects of fluids and fluid pressure.