Earthquake -- Magnitude 3.6 - OREGON

USGS ^ | 09-23-07 | USGS.gov

[Salvation]

Earthquake -- Magnitude 3.6 - OREGON

 

 

Earthquake Details

Magnitude	3.6
Date-Time	Monday, September 24, 2007 at 06:20:54 UTC Sunday, September 23, 2007 at 11:20:54 PM at epicenter
Location	45.099°N, 123.030°W
Depth	22.2 km (13.8 miles) set by location program
Region	OREGON
Distances	8 km (5 miles) NW (313°) from Brooks, OR 10 km (6 miles) NNW (333°) from Labish Village, OR 10 km (6 miles) W (265°) from Gervais, OR 19 km (12 miles) N (360°) from Salem, OR 56 km (35 miles) SSW (213°) from Portland, OR
Location Uncertainty	horizontal +/- 1.5 km (0.9 miles); depth fixed by location program
Parameters	Nst= 31, Nph= 37, Dmin=25 km, Rmss=0.32 sec, Gp= 47°, M-type=duration magnitude (Md), Version=1
Source	Pacific Northwest Seismograph Network
Event ID	uw09240620

 

 

[Salvation]

For all of you who like to track these things!

[Salvation]

This was less than 20 miles n/nw of me. I am only 5 miles from Brooks.

Close to 45th meridian too! Any meaning to that?

[Salvation]

Oregon Ping

Please notify me via FReepmail if you would like to be added to or taken off the Oregon Ping List.

[Salvation]

I was sound asleep. Didn’t feel a thing.

[kinoxi]

Pressure release hopefully.

[maine-iac7]

3.6 puny

[BunnySlippers]

I don’t feel them until they are a 5.

[BunnySlippers]

[Myrddin]

That's a real small one. See how close it is to any of the volcanoes in Oregon. That might raise the level of interest. It's a full moon tonight, so the earth is getting nicely pulled in 2 directions.

[TaMoDee]

In California a 3.6 wouldn’t make any news source whatsoever

[doc1019]

I don’t live in an earthquake subjected area:

I’m confused … what is the difference between and earthquake and “relieving pressure”? Thought that and earthquake was mother natures way of relieving pressure? Same question about and after shock … how do we know that something called and “after shock” is not another earthquake?

If you or anyone here would have a link that would explain all this to me, would save them a lot of typing.

Thanks.

[Michael.SF.]

Thanks for posting that it is very helpful. Having been trough a few here in California I have long thought anything less then 5.0 is hardly worth mentioning.

The posted chart confirms that.

[bubbacluck]

what is the difference between and earthquake and “relieving pressure”?

A small one like this (3.6) is like an SBD "fart". It relieves the pressure. The big ones, like an 8.0 or thereabout, are more like a ... well, do you get the picture? They're both earthquakes but one is constructive and the other is destructive.

[Salvation]

But for Oregon anything close to a 4 is big. LOL!

[BunnySlippers]

Yeah ... but I did read a number of articles about the consequences of a big NE quake. Very bad.

[Mariebl]

Same question about and after shock … how do we know that something called and “after shock” is not another earthquake?

Basically, they do an after-the-fact analysis of the situation. Start with the original earthquake. If afterwards, you have a succession of smaller earthquakes, those are aftershocks. However, if you have a larger earthquake after your original quake, then the first quake is then referred to as a 'foreshock.'

I know that this doesn't sound very scientific, but we have a lot to learn about earthquakes. To have a better determination of aftershock/foreshock, you'd have to understand the causes well enough to predict them, and we're far from that.

(I've felt three quakes in the last month that were approximately 4s--mild, but it raises my adrenaline level.)

[doc1019]

Thanks for the into, I will research further. I’m an information freak and need to know more.

[doc1019]

Thanks, any information is information that improves my knowledge library.

[Cold Heart]

“Close to the 45th meridian too! Any meaning to that?”

A meridian is a great circle through the geographical poles of the earth. (the lines are vertical on a chart),
I think you meant close to the 45th parallel.

To answer your question, No.

[Salvation]

You’re right. I got the wrong name. 45th parallel. It’s between Mount St. Helen’s and all the other dormant or active volcanoes in Oregon. Maybe closer to some in Eastern Oregon that I could say accurately.