probably viscous response underneath rupture
Posted by John Vidale on July 03, 2005 at 08:37:58:

If Director General Ali knows what he is talking about, the most likely explanation is that the mantle underneath the ground rupture in last December's earthquake is flowing as a result of the coseismic change in stress. This flow has interfered with the normal motion of Malaysia due to the usual plate tectonics. The flow will subside as the new stresses relax, and Mayalsia will resume motion at it's usual rate in a few years. Technically, the flow is called post-seismic viscous relaxation.

There is a chance Ali is a bit clueless, and Malaysia moved the wrong way DURING the earthquake, and it will take a while with the usual plate motions for it to get back to where it was before the earthquake. This second possibility would not require continuing flow.


Follow Ups:
     ● Re: probably viscous response underneath rupture - Question - Petra  03:53:49 - 7/4/2005  (26805)  (1)
        ● quite a few places - John Vidale  06:56:14 - 7/4/2005  (26806)  (1)
           ● Post Seismic Viscous Abstracts - Petra  12:23:47 - 7/4/2005  (26807)  (1)
              ● exactly right - John Vidale  12:53:19 - 7/4/2005  (26808)  (0)