Don't aftershocks need to be on the same fault? Most seem to line up, but that Magnitude 5.1 near Imperial, CA looks to be distinct.

Version #2 of the report apparently moved the quake from Imperial CA south to near the same location as the Mag 7.2 shaker. So that would definitely be an aftershock.


Edited by Russ (04/04/10 11:36 PM)
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Better is the Enemy of Good Enough.
Okay, what’s your point??