Friday, February 12, 2010

Earthquake hits Haiti 'Evil Twin' fault

So, an M5.4 has hit the northern fault of the evil twins that surround Haiti. My general impression of the plate, is that the inside is soft and squooshy, and lags the hard outer rim of islands, as it rams into the NA (Atlantic) plate. So, I think the recent big earthquake may have slight stress-relieved the upper fault. But, as I have said an M7 with its measly 30 km, doesn't really do anything.

Probably, these faults tend to alternate, but the lower one is strongly driven by that little subduction dimple south of the Dom. Republic, and has the strong historic pattern. It's the one that has to throw off an M8 in the next 20 years, in order to move on to Jamaica.

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