Valhall,
Anything new on the changes taking place in Yellowstone park and the cauldera growing in the lake?

I try to keep up with earthquake info becasue I live in San Diego. Originally from NY so, earthquakes were never on my list of worries. I have been in Southern Cali now for 14 years and have become my own seismograph. I lived in Redondo Beach the first 6 years of being here in Cali and felt MANY earthquakes, and actually survived the NorthRidge quake. (SCARY)

Since I moved to SD I have not felt as many quakes here...only 3 total. I can literally tell you what their measuremeants are by just experiencing them. On June 15th we had a 5.2 with the epicenter due west over 60 miles out in the ocean. My sense is that since I haven't felt as many as would be neccesary to relieve pressure that something big this way comes....I pray that I am wrong...but I just feel it in my bones.

[edit on 28-6-2004 by Cocco]

Valhall,

Do you have a reference for a large eq in alaska affecting eq activity in Yellowstone?

I find it most unlikely. Ground motion at Yellowstone from body waves would be on the order of nanometers (milimicrons to older folks like myself). Long period (surface waves) ground motion may well be a bit more, but in either case, I believe it unlikely that an Alaskan eq of any size could induce tectonic activity at Yellowstone.

I find quake watch to be an extremely interesting topic and I have heaps of comments, but don't want to step on any toes. Should I try the U2U thing?

Thanks

No, but there are posts here on ATS. I'm not saying I buy into it. I was just referencing a new article that was posted here on the board. As far as I know Yellowstone is as it has been for centuries.

It is not at all unusual. In fact, a hundred or more colocated quakes/day is not unknown. A large number of quakes closely grouped in space and time is known as an earthquake series and occur from time to time.

This area of the world suffers from poor coverage (3 or 4 seismographs in South America and about the same in Africa). I would guess that there were a number of additional, smaller quakes in this area during this time that were not built by USGS.

A strong earthquake occurred at 09:45:17 (UTC) on Thursday, July 22, 2004. The magnitude 6.2 event has been located in the RYUKYU ISLANDS, JAPAN. (This event has been reviewed by a seismologist.)

Anyone live in Japan who can give us some damage or shake reports? 6.2 isn't huge but it's not small either.

A 5.1 in Pakistan as well:

A moderate earthquake occurred at 03:56:39 (UTC) on Thursday, July 22, 2004. The magnitude 5.1 event has been located in PAKISTAN. The hypocentral depth was estimated to be 42 km (26 miles). (This event has been reviewed by a seismologist.)

[edit on 22-7-2004 by deeprivergal]