Concerning Earthquake In Alaska and Cascadia Range

jaycoyoyo

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May I suggest moving your two trailers to Texas, Kansas, Nebraska or Oklahoma?
A few years ago there was an earthquake centered in Oklahoma that I felt in Omaha. I was sitting on the shitter.

-Jay
 

Olds442

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Iceland just had a M5.6, only 10km deep so they felt it.
 

Sct13

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Iceland just had a M5.6, only 10km deep so they felt it.
a second one or from earlier today?

iceland is slightly worrisome. It’s right on two plates...

remember that smaller quakes just relieve the built up stresses. A series of them means something is moving
 

CB91710

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A few years ago there was an earthquake centered in Oklahoma that I felt in Omaha. I was sitting on the shitter.

-Jay
Ya... A 5.x hit locally while I was in the can.

The thought went through my mind how they were going to find my lifeless body in the Walmart shitter....

And FWIW... due to the topography, a 5.0 out here is less scary than a 3.5 in the Great Plains.
They really do rock and roll on sedimentary basins. I live in a valley now, Northridge was 6.7, centered about 50 miles away, and shook the living hell out of us.
Whittier Narrows was only a 5.9, but was centered only about 10 miles from where I lived at the time... which was on high ground, more rocky.

Ya.. there's a reason for the song "The wise man built his house upon the rock"
 

CB91710

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iceland is slightly worrisome. It’s right on two plates...

remember that smaller quakes just relieve the built up stresses. A series of them means something is moving
Something is ALWAYS moving.
You feel it when they stop moving for a while, then break free.
Where you have plate boundaries, but very few quakes... such as SoCal between San Bernardino and Salton Sea, or between LA and Parkfield, it means things are moving.
That's a good thing.
There is a "bend" in the LA area that tends to lock the San Andreas. Fortunately, it's a strike-slip, which are generally not AS destructive because their motion is side to side.

The Cascadia Subduction Zone is a thrust fault. They are far more damaging because they produce significant vertical movement.
I've heard that the Seattle area would drop as much as 30ft if all stress were relieved at once.
 

Sct13

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Right, the west coast is fascinating, I have only experienced one earthquake in Michigan in my entire life. My wife spent her high school years in the Valley in LA ... she teaches earth science now ...

She thinks I’m nuts wanting more.... mild ones anyway...

Iceland she says is a divergent boundary / spreading apart ...

To the tune of Adams family;

divergent is dividing, convergence is colliding
Transform is a sliding ... theses are the plate boundaries....(snap -snap) ...

6th grade science aside ... when that one moves it’s pulling apart...

Very cool stuff.
 

CB91710

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Right, the west coast is fascinating, I have only experienced one earthquake in Michigan in my entire life. My wife spent her high school years in the Valley in LA ... she teaches earth science now ...

She thinks I’m nuts wanting more.... mild ones anyway...

Iceland she says is a divergent boundary / spreading apart ...

To the tune of Adams family;

divergent is dividing, convergence is colliding
Transform is a sliding ... theses are the plate boundaries....(snap -snap) ...

6th grade science aside ... when that one moves it’s pulling apart...

Very cool stuff.
Yep... the continents are basically splitting down the middle of the Atlantic. South America is rotating and coming up, forcing the Pacific Plate into a northern motion... otherwise the entire Pacific Rim would be a subduction zone.
But the currents in the mantle are forcing otherwise.
 


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