Monday, December 1, 2014

M4.7 Arizona earthquake, rugged territory

The USGS isn't giving a fault plane solution, and I don't think there is much coverage, but this is one of those random events that happens in relatively stable geology.  I did get a streetview.

Very mountainous, so you'd expect a lot of internal stress adjustments.  The felt area shows a uniform pattern of very low ground motions.

This is what you'd expect for something that is more than 20 km deep.  I'm doubting they'll see another one soon.

Update:  Normal (tension), the least of ground motions.

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