Big one in Chile A bunch of medium sized in LA lately One in Portland tonight..... http://en.wikipedia.org/wiki/Ring_of_Fire :MARIS61:
No, just a few days to months of chaos most likely. But better have water, first aid, food and protection in the meantime.
It matches up quite precisely with a map of Tectonic Plates boundaries where the subduction zones are located. Where Tsunamis are generated when the water cover over an up lifted ocean floor (a displacement event) causes a surface turbulence before the water displaced reaches equilibrium. This has only happen where the water cover depth is less than a 1000 meters. http://en.wikipedia.org/wiki/File:Tectonic_plates_boundaries_detailed-en.svg
Could be a pre-shock. Before we got the larger quake last weekend we had a smaller quake about this magnitude. And Portland isn't that big compared to LA's area. Its the same general area.
I live literally a few feet outside a mapped zone (90 ft elevation 1/4 mile inland). Not that comforting. There were focus spots in Japan where the water reached well over 100 ft.
I'm tellling you, earthquakes freak me out -- the good news for Oregon is that it's generally safer than Washington. The big exception is the entire Oregon coast line and that's a big exception. Seattle is built on top of multiple fault lines and multiple faultlines are in close proximity. Like the Oregon coast, the entire Washington coast line is also a tsunami disaster waiting to happen. Here's a link to a review of Full-rip 9.0, a recent book focused on earthquakes in the Northwest: http://www.oregonlive.com/books/index.ssf/2013/06/full_rip_90_review_the_next_bi.html
