[californiadisasters] Re: Quake in Chile set off tremors in California-US study

Coso? I am skeptical. Name me six hours when there weren't microquakes at Coso.

--- In californiadisasters@yahoogroups.com, Lin Kerns <linkerns@...> wrote:
>
> Quake in Chile set off tremors in California-US study
>
> Fri Jan 14, 2011 4:44pm EST
>
> WASHINGTON Jan 14 (Reuters) - A devastating earthquake in Chile last year
> may have set off a swarm of smaller quakes as far away as California, U.S.
> researchers reported on Friday.
>
> They found evidence that the magnitude 8.8 quake in Chile, which killed 500
> people and set off tsunamis that devastated coastal cities last February,
> set off a chain of events 10,000 km (6,200 miles) away.
>
> The quakes in central California started six hours after the quake in Chile,
> reported Zhigang Peng of the Georgia Institute of Technology and colleagues
> there and at the U.S. Geological Survey in Menlo Park, California.
>
> "In particular, we identify triggered microearthquakes in the Coso
> Geothermal Field," they reported in Geophysical Research Letters. "This is
> one of the most seismically active regions in California," they added.
>
> "At least four microearthquakes at shallow depth (under 3 km or 1.8 miles)
> in the Coso Geothermal Field were likely triggered by teleseismic waves from
> the Chile earthquake."
>
> They also noted a cluster of deep, low-frequency earthquakes along the
> Parkfield-Cholame section of the San Andreas Fault, they reported in
> Geophysical Research Letters.
>
> Earthquakes set off seismic waves and Peng's team said in this case types
> known as Love and Rayleigh waves were likely responsible.
> Source <http://www.reuters.com/article/idUSN1423248320110114>
>
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