Friday, April 24, 2015

Vancouver M6.1 walks down the track

This is right down at the bottom of the previous M7ish strike-slip earthquake,  This one is oblique thrust.

The big question is which track?  I am adamant about the buried strike-slip fault that defines the island, and goes way down into Seattle.  This is the real threat to Vancouver, but it is buried under a ton of sediment.  Pooh-pooh on the subduction zone, that is the worst-defined zone on the planet.  Other cities will tumble before this one does anything.

Being adjacent to the old quake, it could be a left-over or the start of the next section.  I make no predictions since my previous extrapolation was assuming the earthquakes were walking North to Alaska.

Just like Oklahoma, we could use some deep imaging here.

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