Earthquake in Alaska

Alaska Earthquake Information Center ^ | 1/5/13

[The Cajun]

Don't know, but I would just like to see if it's there, then let the theorizing begin.
Do know that if you heterodyne ultrasonics down to audible frequencies, it makes a good detector for bearings beginning to squeal due to lack of lubrication before you can hear them audibly.
Had a simple circuit diagram for doing that (Cheap piezo microphone, couple of chips, output transistors and outputting to a speaker or headphones).
Built it for the mechanic at the shop many moons ago.
Liked it better than his mechanic stethoscope because with headphones it would cut out more engine noise and he could really hear alternator bearings and idler pulley bearings better.

[Errant]

Shale under tension might create those kind of frequencies... You might get some of your buddies in the fracking business to check that possibility... As you see, I like the theorizing part; it’s the actual work that gives me allergies... lol

[machogirl]

I guess we will know when Google Maps puts the “Falkland Islands” in parenthesis and “Islas Malvinas” as the header.

[winoneforthegipper]

Soundwaves you say?.....lol

This is part and parcel to a quakes stress shadow research that I am a fan of..

However this one directly goes to what Cajun has been thinking, perhaps you can use their research as a starting point!

http://www.sciencedaily.com/releases/2008/01/080103124649.htm

[winoneforthegipper]

Here is the PDF for the position paper...

http://www.lanl.gov/orgs/ees/ees11/geophysics/nonlinear/2012/JohnsonJGR12Slow.pdf

[machogirl]

Good read. Thanks for the ping!

[machogirl]

Still looking for that paper I read about the “locked” area of the San Andreas south of Parkfield to San Bernadino producing waves that resemble harmonic tremors.

It was from the 2004 installation of the Parkfield Experiment Data. (IIRC)

[winoneforthegipper]

Hehehe...did u just call me a creep?......oh why didn’t you just ask me...lol

ftp://ftp.gps.caltech.edu/pub/avouac/Ge277-2012/readings/Becken-Nature-2011.pdf

[The Cajun]

Thanks for the info and interesting.
What I'm kind of looking for along those lines, is a complete spectrum analysis of the sounds (Booms or buzzing) that are sometimes heard, but so far not explained.
Sometimes a light display (flashes or apparent plasma spheres) are seen also.
They are sometimes called earthquake lights.
Just trying to connect some dots and tie things together.
Basically what is the fundamental frequency of the sound (where the most energy (amplitude) is seen), the harmonics and subharmonics of that frequency and their possible effects which may be different than what the fundamental frequency produces.
Just another thought, the audible sound heard may not be the fundamental frequency, it could possibly be a harmonic or subharmonic.
Doesn't happen all the time so I suspect several things have to occur just right for the phenomena to be heard or observed.
Another thing about the sound, by people hearing it, it seems to be directionless.
Just guessing there is an acoustic and electrical tie in to what is sometimes observed.
There has to be a lot of energy involved due to the loudness and area covered by the *booms/buzzing* and sometimes light flashes (lightening like, sheet and ball).
My question is, what is the primary source from underground that generates what is observed above ground.
Is it acoustic, electrical, mechanical or a combination of all?
Does it tie in occasionally to surface quakes?
I know the above is confusing as heck, but I think it's half way straight in my mind :)

[winoneforthegipper]

No i gettting you...look also that pdf on the creep and it’s implication of tremor/harmonic due to electric/chemical reactions.

Certainly the science is there for your theory. It’s just needs to tightened up a bit to prove it...lol

[machogirl]

I’m totally confused. Not the first time, nor the last.

[winoneforthegipper]

I was born confused and it’s been downhill ever since...lol

[machogirl]

Here is what the HAARP STATUS (their FB site) says about an upcoming quake: (Earthquake Watch in Effect)

Due to the HaarpStatus Sensors combined with the incoming CME from the Sun and The Weather Space.com Senior Meteorologist Kevin Martin’s Window, The window is now active and the Earthquake Watch has begun and will go for a week. None of the quakes before this have counted, even if there were a number.

“The last time such a pattern happened was with the 1994 ridge over the Northridge Earthquake.” - Martin

[machogirl]

oops, forgot his theory page at “The Weather Space”

http://www.theweatherspace.com/news/TWS-011213-earthquake-watch-western-north-america.html