focal mechanism is um now: one of the 2 planes is gently NE-dipping, consistent with subduction. Might be interesting to check out Kerry Sieh's web site to see what this broke relative to what already broke the last few years, vs. what is left to break in the Mentawai gap. May take some time for him to update this.

But, I'm going to rake leaves instead: I worked on North Anatolian fault structure/stratigraphy most of the weekend.
Chris
Chris