Re: 6.4 south of equator in Sumatra
Posted by chris in suburbia on April 09, 2005 at 10:03:53:

There has now been a M6.4, south of equator but north of the ones the day before. Both solutions for the 6.4 show left-lateral motion on a steep ENE-WSW plane. The marine geophysicist wife had noted that there is a major fracture zone in the oceanic crust that intersects the subduction zone in this area...the crust is of greatly different age on either side, and that could affect how it subducts.....

I think this area REALLY needs to be instrumented.....continuous GPS, seismometers, Ocean Bottom seismometers...
whatever else....

I'll email the links to these posts to wife and other seismologist who was just part of Japanese survey of area of M9.3....

Chris

Follow Ups:
     ● Re: 6.4 south of equator in Sumatra - Petra  12:05:25 - 4/9/2005  (25562)  (2)
        ● Re: 6.4 south of equator in Sumatra - chris in suburbia  14:11:48 - 4/9/2005  (25564)  (2)
           ● not sure - John Vidale  19:52:32 - 4/9/2005  (25571)  (1)
              ● Re: not sure - Don in Hollister  20:14:42 - 4/9/2005  (25572)  (1)
                 ● M6.8 thrust in same area - chris in suburbia  08:38:52 - 4/11/2005  (25585)  (0)
           ● Re: 6.4 south of equator in Sumatra - Petra  15:14:24 - 4/9/2005  (25566)  (1)
              ● people and great earthquakes - chris in suburbia  15:35:43 - 4/9/2005  (25567)  (1)
                 ● Pacific Northwest/Triple Junction - Petra  01:02:17 - 4/10/2005  (25575)  (0)
        ● Re: 6.4 south of equator in Sumatra - glen  13:11:10 - 4/9/2005  (25563)  (0)