or in response to silent slip
Posted by John Vidale on March 22, 2011 at 09:01:14:

Or all three events are responding to accelerated post-seismic deformation. The story from GPS might be interesting for this earthquake.

Follow Ups:
     ● sea floor observatories: John V and other opinions? - heartland chris  16:01:11 - 3/22/2011  (78459)  (1)
        ● I'd first go for an early warning system - John Vidale  16:17:50 - 3/22/2011  (78460)  (1)
           ● Re: I'd first go for an early warning system - heartland chris  19:53:56 - 3/22/2011  (78463)  (1)
              ● EQ early warning system - Pacific Northwest - Barbara  21:43:33 - 3/22/2011  (78467)  (1)
                 ● costly - John Vidale  10:23:29 - 3/23/2011  (78470)  (0)