An earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. A new study presents geophysical evidence of fluids (water) migrating into the creeping section of the San Andreas fault that seem to originate in the region of the uppermost mantle that also stimulates tremor, and evidence that along-strike variations in tremor activity and amplitude are related to strength variations in the lower crust and upper mantle. From the pattern of electrical conductivity and seismic activity they were able to deduce that rock water acts as a lubricant.

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Watery Earthquakes

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