Originally posted by rg73
I'm throwing this out to anyone with some geology knowledge (because mine is pretty limited), but is this a normal amount of activity after a quake
of that magnitude? Looking at the USGS website it appears that quakes of 5.0+ have been happening almost every few hours almost continuously since
the 9.0.
There are thousands of 5.0 quakes every year.
Having grown up in southern California and been through many quakes myself, I'm familiar with aftershocks, but nothing like that.
The san andreas is one fault, actually its a series of microfaults in some parts, and what you have is the last bits of i think the juan de fuco plate
being subducted underneath north america. In the rest of the ring of fire, there are not just double, not just triple, but quadruple plate
boundaries. Its a whole different world from california.
I'm not one of these nutters who thinks this is the end of the world, or the poles are shifting or whatever, but I'm curious as to whether it is
possible to have periods of dramatically increased seismic activity (e.g. having major quakes constantly for months)
I don't know, you'd think so, but apparently it doesn't happen. I think this is a 'full moon babies' case.
Lemme 'splain. For a long time people thought that more babies were born on a full moon, for whatever the reason. Nurses actually confirmed it.
But when the records were checked, it was completely untrue. Everyone had an expectation that it should be true, so they took more note of stuff on
those occasions. Full Moon out, check, crap look at all these babies. No full moon, well, there's lots of babies, but no full moon, so forget about
it.
Here its, wow, what a huge earth quake. Then everytime there is an earthquake in that part of the world, its going to get noticed, even get reported
on the news and multiple newssites. So it seems like there is a ton of stuff going down.
From what I've read of the Alaska 9+ quake I never recall reading anything about continuous major aftershocks for weeks
afterwards.
I don't think that these are necessarily aftershocks. Thats a region where there are constant unrelated (well, sort of) earthquakes.