Friday, March 27, 2009

So Cal quake swarm raises seismologist's blood pressure

A recent swarm of small earthquakes beneath Southern California's Salton Sea "has scientists wondering if faults there are transferring energy to the larger San Andreas, where a major temblor could occur." (LA Times) In 1987, a 6.2 quake near the Salton Sea "appeared to trigger" a 6.6 tremor on an adjacent fault. While the chances of a major quake are low, the quake swarm "raises your blood pressure as a seismologist," said one expert. (Another LA Times article)

A "creep meter" detected a .002 inch slip along the San Andreas fault following the largest quake in the Salton Sea swarm (a magnitude 4.8 that hit Tuesday).

Earlier this year,
the LA Times reported a "troubling pattern of Southern California quakes." According to the report, "the San Andreas fault has had a major temblor about every 137 years, according to new research. The latest looks to be overdue."

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I started pound360 to channel my obsession with vitamins, running and the five senses. Eventually, I got bored focusing on all that stuff, so I came back from a one month hiatus in May of 2007 (one year after launching Pound360) and broadened my mumblings here to include all science.