Monday, November 18, 2013

Oklahoma earthquake - M3.0

We're back to the more typical pattern we've had for the last year or so - M3's  in the hanging wall, scattered around the injection wells.  With fluid flow, you can keep this up forever, provided there are no major structures.  OK's big hope is that this is true, and they never get big.

I am chagrined that my hopes for a sequence under the city have been dashed for now.  If we do get something over an M4, I count on the instrumentation to give us a focal mechanism, which should be thrust, relieving the principle stress in the NE direction.  Otherwise, I am undone.  :(

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