Swarm of Undersea Quakes!

stubeeef

macrumors 68030
Original poster
Aug 10, 2004
2,702
2
Link
SEATTLE - A swarm of undersea earthquakes off the Pacific Northwest coast has scientists from the University of Washington scrambling in hopes of glimpsing of two tectonic plates pulling apart.

The 209-foot RV Thomas G. Thompson, a research ship from the university, headed for the Endeavor Hot Vents over the weekend after seismic equipment had detected nearly 3,800 small quakes as of late Thursday.

Among those on the ship are scientists from Oregon State University and the National Oceanic and Atmospheric Administration, said Robert P. Dziak, an oceanographer at the Hatfield Marine Science Center in Newport, Ore.

"These earthquake swarms are associated with sea floor spreading," Dziak said.

"The speculation is it might be a volcanic eruption or a magma event on the ridge," Garry Rogers, a seismologist with the Geological Survey of Canada in Vancouver, British Columbia, said Sunday.

"Thousands of earthquakes occurring over a few days, it's a tremendous amount of energy, but it's way offshore," Rogers said. "They are too far to be felt, so as far as we know there is no threat."

The swarm included a 4.1 magnitude quake at 5:01 a.m. Sunday, "just to remind us it's a very active earthquake area," he said.
Beach front properties in Nevada anyone?
 

stubeeef

macrumors 68030
Original poster
Aug 10, 2004
2,702
2
clayjohanson said:
If anyone tries to blame global warming for these undersea quakes, I'm gonna smack 'em.
Well it is obvious isn't it! ;)
 

Lz0

macrumors regular
Jul 20, 2002
172
3
Melbourne
This might explaine it.

Material by: Andrew Limburg

Material from: Independent Media TV

Material about: Top Stories Ignored By U.S. Media

Material about: Oil


Now I don’t claim to be an expert on seismic activity, but there has been a series of events which led up to the 9.0 earthquake of the coast of Indonesia which can not be ignored. This all could be an enormous coincidence, but one must look at the information and choose for themselves whether there is anything to it.

On November 28th, one month ago, Reuters reported that during a 3 day span 169 whales and dolphins beached themselves in Tasmania, an island of the southern coast of mainland Australia and in New Zealand. The cause for these beachings is not known, but Bob Brown, a senator in the Australian parliament, said "sound bombing" or seismic tests of ocean floors to test for oil and gas had been carried out near the sites of the Tasmanian beachings recently.

According to Jim Cummings of the Acoustic Ecology Institute, Seismic surveys utilizing airguns have been taking place in mineral-rich areas of the world’s oceans since 1968. Among the areas that have experienced the most intense survey activity are the North Sea, the Beaufort Sea (off Alaska’s North Slope), and the Gulf of Mexico; areas around Australia and South America are also current hot-spots of activity.

The impulses created by the release of air from arrays of up to 24 airguns create low frequency sound waves powerful enough to penetrate up to 40km below the seafloor. The “source level" of these sound waves is generally over 200dB (and often 230dB or more), roughly comparable to a sound of at least 140-170dB in air.

According to the Australian Conservation Foundation, these 200dB – 230dB shots from the airguns are fired every 10 seconds or so, from 10 meters below the surface, 24 hours a day, for 2 week periods of time, weather permitting.

These types of tests are known to affect whales and dolphins, whose acute hearing and use of sonar is very sensitive.

On December 24th there was a magnitude 8.1 earthquake more than 500 miles southeast of Tasmania near New Zealand, with a subsequent aftershock 6.1 a little later in the morning that same day.

On December 26th, the magnitude 9.0 earthquake struck at the intersection of the Australian tectonic plate and the Indian tectonic plate. This is the devastating tsunami tragedy that we have all heard about in the Indian Ocean. The death toll of this horrific event has reached 120,000 souls and continues to rise.

On December 27th, 20 whales beached themselves 110 miles west of Hobart on the southern island state of Tasmania.

What is interesting about this is that the same place where the whale beachings have been taking place over the last 30 days is the same general area where the 8.1 Australian earthquake took place, and this is the same area where they are doing these seismic tests. Then 2 days after the Australian tectonic plate shifted, the 9.0 earthquake shook the coast of Indonesia.

A great deal of interest and seismic testing has been taking place in this area, as the government of Australia has given great tax breaks to encourage the oil exploration.

Two Geologists that I spoke to felt that it was highly unlikely that these seismic tests would have had enough energy to induce the Australian quake. On the other hand there is strong evidence that suggests that oil exploration activities have induced earthquakes in the past.

Again, I don't claim to be an expert. I'm writing this story to bring attention to some interesting facts, so that those who are experts can investigate this fully.

We will be following up on this story as more information is gathered.

Link to story
 

Sun Baked

macrumors G5
May 19, 2002
14,874
57
Lz0,

You forgot the story about Bush ordering a nuclear detonation to trigger the quake. ;)
 

joepunk

macrumors 68030
Aug 5, 2004
2,553
13
a profane existence
Holy S**t :eek: that's a lot of tremors (good movie as-well).

And just a week away from Winter Quarter Finals at that.

Hope none of these small quakes means that there will be bigger quakes closer to shore.

I think that in the news here (as in washington state) there was a small quake inland a few days to a week ago.

Thanks for the news report everyone.
 

Sun Baked

macrumors G5
May 19, 2002
14,874
57
There was a guy who was rather accurate with earthquake predictions, his predictions were based on the alignment of the planets -- and the stress this will cause on the Earth's crust.

I wonder if we're in a period where the Earth is stressed and ringing like a bell at the moment.
 

apple2991

macrumors 6502
May 20, 2004
419
0
Sun Baked said:
Lz0,

You forgot the story about Bush ordering a nuclear detonation to trigger the quake. ;)
Sun Baked,

You forgot the part where you considered all serious possibilities. Like the one proposed in the story posted by Lz0. ;)
 

mactastic

macrumors 68040
Apr 24, 2003
3,681
665
Colly-fornia
clayjohanson said:
<SMACK!>

Consider yourself smacked. And whattheheck is "LGM"? :)
Yes, Little Green Men. And I blame the overzealous military-industrial complex, as well as violent rap and video games, for you hitting me.
 

eRondeau

macrumors 65816
Mar 3, 2004
1,029
115
Canada's South Coast
Something bigger on the way???

In the last two weeks we've had two very small (2.5ish) earth tremors reported in Southwestern Ontario, not too far from Detroit. We almost never have such tremors here. I'm no geologist, but if I was watching a bad disaster movie I'd expect this sort of thing to foreshadow The Big One.
 

Sun Baked

macrumors G5
May 19, 2002
14,874
57
apple2991 said:
Sun Baked,

You forgot the part where you considered all serious possibilities. Like the one proposed in the story posted by Lz0. ;)
OK, let me try...

Well they do use sonic waves to clean jewelery and vehicle parts.

So somebody can cobble together a huge sonic cannon which should be able to clean up the Arizona and Nevada beachfront property of all that California waste.

;)
 

wdlove

macrumors P6
Oct 20, 2002
16,568
0
At least this hasn't caused another Tsunami. Hopefully scientists will gain some useful knowledge from these undersea quakes.
 
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