Hurricanes cause earth to vibrate

[vbhoutex]

From Weather matrix:

http://www.newscientist.com/article.ns? ... 625065.900

"HURRICANES can trigger swarms of weak earthquakes and even set the Earth
vibrating, according to the first study of such effects.

When Hurricane Charley slammed into Florida in August 2004, physicist
Randall Peters of Mercer University in Macon, Georgia, had a seismometer
ready to monitor any vibrations in the Earth's crust. He did so for over 36
hours as Charley travelled briefly over Florida, then slid back out into
the Atlantic.

As the hurricane reached land, the seismometer recorded a series of
"micro-tremors" from the Earth's crust. This happened again as the storm
moved back out to sea. Then, as Charley grazed the continental shelf on its
way out, it caused a sharp seismic spike. "I suspect the storm triggered a
subterranean landslide," says Peters.

More surprisingly, the storm also caused the Earth to vibrate. The planet's
surface in the vicinity of the hurricane started moving up and down at
several frequencies ranging from 0.9 to 3 millihertz. Such low-frequency
vibrations have been detected following large earthquakes, but this is the
first time a storm has been found to be the cause
(<http://www.arxiv.org/physics/0506162>www.arxiv.org/physics/0506162)."

Comments welcomed.

[gatorcane]

wow very interesting....imagine a hurricane so strong that it causes an earthquake!

[corpusbreeze]

Very interesting. I wonder if it has to do with the sudden low pressure on the crust letting it rise up in in a very small way?

[gatorcane]

maybe the pressure....the whole thing is very strange...I'm not sure what to make of it?

[feederband]

A Hurraquake !!!

[dhweather]

I'm sure Jack Beven would point out that in 1988, in Baton Rouge,
LSU QB Tommy Hobson threw an 11 yard TD pass with second remaining
for LSU to beat Auburn 7-6.

The exact second of the TD, the seismograph on campus at LSU
registered a minor quake.

[HURAKAN]

This is very weird but interesting!

[Hurricaneman]

Odd

[KWT]

when Ivan went upto Category-5 last year I remember there beimng several earthquakes across Cuba as the hurricane came closer,as soon as it left the region the earthquakes stopped.

[HUC]

Frequently,here in Guadeloupe,hurricane's relations reported earthquakes during hurricanes.
In Cleo 1964,the official sismograph,recorded these eartquakes.
BUT...this perhaps due to the impact of the gusts,the strong waves battering the coast....
This a very interesting subject to discuss,and if some scientist here can give his opinion,it will be a good thing to understand an other"hurricane mistery"!!!!!

[LSU2001]

yea!!!!!!!!!!!!! The famous Earthquake Game. I was there in Tiger Stadium and it was loud loud loud.

[LSU2001]

By the way weren't there some earthquakes recorded during Ivan last year around Jamica Grand Cayman Etc.
TIm

[Brent]

By the way weren't there some earthquakes recorded during Ivan last year around Jamica Grand Cayman Etc.
TIm

Yep... I remember Luis I think even starting a topic about a day or two Ivan before hit Grand Cayman about an earthquake there. Strange indeed.

[Wthrman13]

Frankly, I would be surprised if there weren't any seismic effects from hurricanes, albeit very small.

[Radar]

Well, it doesnt really surprise me, look at the kind of energy a hurricane is capable of producing. Not really knowing all the scientific facts related to this activity it does seem like common sense though that one could have an impact on another. Look at the big Tsunami last year. What is famous theory: For every action there is a reaction? (or something like that)...

[crazycajuncane]

yea!!!!!!!!!!!!! The famous Earthquake Game. I was there in Tiger Stadium and it was loud loud loud.

Only IN Baton Rouge... with that many people jumpig up and down I wouldn't be surprised if the campus was shaking lol.

[abajan]

Frankly, I would be surprised if there weren't any seismic effects from hurricanes, albeit very small.

I would be too because practically everything that happens on the earth creates seismic effects. If you just walk down the street, the entire earth shakes. It's just a matter of magnitude and if we have instruments sensitive enough to detect those vibrations.

[dhweather]

yea!!!!!!!!!!!!! The famous Earthquake Game. I was there in Tiger Stadium and it was loud loud loud.

Only IN Baton Rouge... with that many people jumpig up and down I wouldn't be surprised if the campus was shaking lol.

80,000 folks going nuts in an instant can so that.


Today, Tiger Stadium can hold about 95,000 - so imagine how
much worse it can get!

[LCfromFL]

I came across this awhile ago and thought it interesting - it's a report of an earthquake (not common in FL) that takes place during a 'possible hurricane'. The event happened in 1780 - not too many reliable weather sources back then...

The link: http://neic.usgs.gov/neis/eq_depot/usa/1780_02_06.html

Northwest Florida
1780 02 06 UTC
Intensity VI


Regimentals and arms racks fell from walls in many barracks; everything in the rooms was moved; doors were sprung. Chimneys were thrown together causing fires. Neighboring houses clashed together, and people buried in the ruins cried for help. This event occurred during a "fearful" storm that was accompanied by violent thunder and lightning and raging seas. Possibly a hurricane.

See also the earthquake on 1879 Jan 13.


Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.