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A study earlier this year in the journal Nature found that a lack of water in the San Joaquin Valley is decreasing the weight on the San Andreas Fault, which could lead to more earthquakes. “Much of this would be smaller earthquakes but theoretically you could get a larger quake,” said Adrian Borsa with the Scripps Institution of Oceanography.
Since 2013, 63 trillion gallons of water have depleted form the western part of the United States due to the drought. Uplift not contributed from pumping has caused the ground level to lift up to a sixth of an inch and nearly half an inch in the mountain areas, according to Borsa. Borsa believes that this type of uplift isn’t enough to trigger a large-scale earthquake. “Stressing on the earth from this uplift is just not that significant,” said Borsa.
originally posted by: ericblair4891
a reply to: intrptr
There was a severe drought 1987-1992. The Oakland Earthquake was October, 1989. According to weather charts, there was some relief from rains in the spring of 1989. And if I'm reading it right, there was a storm a month before the earthquake.
There was a new report that is suggesting the mantle is full of water. Water did not just come from dirty snowballs from space. This means it all through the crust. Meaning water could be migrate deeper than we think…
Northwestern University geophysicist Steve Jacobsen and University of New Mexico seismologist Brandon Schmandt have found deep pockets of magma around 400 miles beneath North America — a strong indicator of the presence of H₂O stored in the crystal structure of high-pressure minerals at these depths."