Earthquake

[ddmoit]

Any of our north westerners feel this?

http://www.breitbart.com/article.php?id=D8V63I580&show_article=1

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[ceramictec]

called my friend in Salem (South West of Portland), he didn't hear or feel a thing in the a.m..
people aren't even talking about it he said.

[dl]

Nope, of course I was sleeping.

Offshore earthquakes aren't all that unusual here, there was a 6.4 in January (http://www.foxnews.com/story/0,2933,321529,00.html), but only occasionally can they be felt.

We're waiting for the overdue "big one". The last was a 9.0 in 1700.

- DL

[RedRockTile]

There was a 6.3 in Wells Nevada a week or so ago. My wife and her sister were in Salt Lake City and felt some tremors.

The last was a 9.0 in 1700.
Just curious, how did they measure earthquakes back in the 1700s?

[dl]

Just curious, how did they measure earthquakes back in the 1700s?

Good question.

http://www.fema.gov/plan/prevent/earthquake/sty_mag9.shtm

and a little more detailed explanation (http://www.oregongeology.com/sub/news&events/archives/SoregonEQs.htm)

- DL