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Earthquake Swarm, Including Magnitude 4.0, Shakes East Bay Cities
KPIX San Francisco ^ | May 3, 2015 | AP/CBS

Posted on 05/03/2015 4:44:44 PM PDT by John W

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To: Yo-Yo

There was one in Dallas this morning at 10:15. A 3.2


21 posted on 05/03/2015 8:17:06 PM PDT by dandiegirl (BO)
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To: Polynikes

Why does the shallow depth cause concern?


22 posted on 05/03/2015 9:05:50 PM PDT by Nuc 1.1 (Nuc 1 Liberals aren't Patriots. Remember 1789!)
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To: Nuc 1.1
A shallow depth EQ’s shaking and resultant damage can be much worse at lower magnitude than one that is deeper but larger. If these relatively small EQ’s are precursors to a larger EQ but at the same depth and it is something say in the 5.0’s at 1km or then the damage/shaking will be greater than if the EQ is at say 20-30 km.
23 posted on 05/03/2015 9:30:00 PM PDT by Polynikes (What would Walt Kowalski do. In the meantime "GET OFF MY LAWN")
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To: Polynikes

Ah. Thanks.


24 posted on 05/03/2015 9:49:45 PM PDT by Nuc 1.1 (Nuc 1 Liberals aren't Patriots. Remember 1789!)
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