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 Posted: Tue Mar 02, 2010 6:23 am
March 1) -- Apart from claiming the lives of hundreds of people and wreaking enormous property damage, Chile's massive earthquake has likely altered the distribution of the Earth's overall mass, scientists from NASA say.
As a result, the length of a day is now a little shorter than it was before Saturday's magnitude 8.8 earthquake.
"The length of the day should have gotten shorter by 1.26 microseconds [millionths of a second]," Richard Gross, a geophysicist at NASA's Jet Propulsion Laboratory, told Bloomberg. "The axis about which the Earth's mass is balanced should have moved by 2.7 milliarcseconds [about 8 centimeters or 3 inches]."
The speed that the Earth rotates also increased slightly in 2004 following the earthquake that struck off the coast of Sumatra, Indonesia. That 9.1 earthquake shortened the length of an Earth day by 6.8 microseconds, scientists say.
The reason is that sudden changes in the dimensions of the Earth's tectonic plates, like those experienced in the earthquakes in Chile and Indonesia, can alter the velocity.
David Kerridge, the head of Earth hazards and systems at the British Geological Survey in Edinburgh, likened the change in rotation speed to what happens when a figure skater draws her arms in close to her body while spinning. "As she pulls her arms in," Kerridge told Bloomberg, "she gets faster and faster. It's the same idea with the Earth going around: If you change the distribution of mass, the rotation rate changes."
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Posted: Wed Mar 03, 2010 6:54 pm
They say L.A. is going to be next.
It's so depressing that people spent all the time and money giving to Haiti and now Chile needs help and I bet people won't even give half as much this time around.
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Underworld Priestess Vice Captain
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Posted: Thu Mar 04, 2010 5:16 am
shadowflameguardian They say L.A. is going to be next. It's so depressing that people spent all the time and money giving to Haiti and now Chile needs help and I bet people won't even give half as much this time around. I haven't donated crap. If I could trust any of those "charities" I would. Can't even Trust the Red Cross because the money doesn't even go to that most of the time. Its just Ridiculous. I'd rather send food, and clothing instead of money.... But you don't even know if that will get there either.
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Posted: Thu Mar 04, 2010 9:26 am
GuardianIceQueen shadowflameguardian They say L.A. is going to be next. It's so depressing that people spent all the time and money giving to Haiti and now Chile needs help and I bet people won't even give half as much this time around. I haven't donated crap. If I could trust any of those "charities" I would. Can't even Trust the Red Cross because the money doesn't even go to that most of the time. Its just Ridiculous. I'd rather send food, and clothing instead of money.... But you don't even know if that will get there either. Agreed, I am the same way. I would rather donate items to places like Goodwill then do anything else.
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Underworld Priestess Vice Captain
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Posted: Thu Mar 04, 2010 2:58 pm
GuardianIceQueen March 1) -- Apart from claiming the lives of hundreds of people and wreaking enormous property damage, Chile's massive earthquake has likely altered the distribution of the Earth's overall mass, scientists from NASA say.
As a result, the length of a day is now a little shorter than it was before Saturday's magnitude 8.8 earthquake.
"The length of the day should have gotten shorter by 1.26 microseconds [millionths of a second]," Richard Gross, a geophysicist at NASA's Jet Propulsion Laboratory, told Bloomberg. "The axis about which the Earth's mass is balanced should have moved by 2.7 milliarcseconds [about 8 centimeters or 3 inches]."
The speed that the Earth rotates also increased slightly in 2004 following the earthquake that struck off the coast of Sumatra, Indonesia. That 9.1 earthquake shortened the length of an Earth day by 6.8 microseconds, scientists say.
The reason is that sudden changes in the dimensions of the Earth's tectonic plates, like those experienced in the earthquakes in Chile and Indonesia, can alter the velocity.
David Kerridge, the head of Earth hazards and systems at the British Geological Survey in Edinburgh, likened the change in rotation speed to what happens when a figure skater draws her arms in close to her body while spinning. "As she pulls her arms in," Kerridge told Bloomberg, "she gets faster and faster. It's the same idea with the Earth going around: If you change the distribution of mass, the rotation rate changes."
To stay on topic. lol! Do you think we are going to hear about any more bad earthquakes soon?
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Posted: Thu Mar 04, 2010 10:08 pm
Yes, they are saying that there is going to be one in LA soon.
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Underworld Priestess Vice Captain
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Posted: Fri Mar 05, 2010 4:21 am
shadowflameguardian Yes, they are saying that there is going to be one in LA soon. I've read somewhere that they say it isn't a "chain" reaction that the plates don't effect each other. I believe the person that said that, doesn't have their head screwed on right.
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Posted: Fri Mar 05, 2010 9:41 pm
It was an article in a newspaper proposed by some scientist. I guess just how the plates are shifting, they didn't say how soon it would be. I was always told that one day Cali would sink into the ocean.
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Underworld Priestess Vice Captain
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Posted: Wed Mar 10, 2010 2:11 pm
theve been saying the LA one will hit for many years now...
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Posted: Fri Mar 12, 2010 6:07 am
GuardianIceQueen GuardianIceQueen March 1) -- Apart from claiming the lives of hundreds of people and wreaking enormous property damage, Chile's massive earthquake has likely altered the distribution of the Earth's overall mass, scientists from NASA say.
As a result, the length of a day is now a little shorter than it was before Saturday's magnitude 8.8 earthquake.
"The length of the day should have gotten shorter by 1.26 microseconds [millionths of a second]," Richard Gross, a geophysicist at NASA's Jet Propulsion Laboratory, told Bloomberg. "The axis about which the Earth's mass is balanced should have moved by 2.7 milliarcseconds [about 8 centimeters or 3 inches]."
The speed that the Earth rotates also increased slightly in 2004 following the earthquake that struck off the coast of Sumatra, Indonesia. That 9.1 earthquake shortened the length of an Earth day by 6.8 microseconds, scientists say.
The reason is that sudden changes in the dimensions of the Earth's tectonic plates, like those experienced in the earthquakes in Chile and Indonesia, can alter the velocity.
David Kerridge, the head of Earth hazards and systems at the British Geological Survey in Edinburgh, likened the change in rotation speed to what happens when a figure skater draws her arms in close to her body while spinning. "As she pulls her arms in," Kerridge told Bloomberg, "she gets faster and faster. It's the same idea with the Earth going around: If you change the distribution of mass, the rotation rate changes."
To stay on topic. lol! Do you think we are going to hear about any more bad earthquakes soon? oh we'll be seeing a lot of earthquakes.
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wicked_faery Vice Captain
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Posted: Fri Mar 12, 2010 6:30 am
Apparently Japan had one a few hours before Chilie did. WE didn't hear about that much. But then Japan is smart. They have the tech to make their buildings stable and they also get 7.0 or higher / or lower earthquakes very often.
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Posted: Fri Mar 12, 2010 10:09 am
GuardianIceQueen Apparently Japan had one a few hours before Chilie did. WE didn't hear about that much. But then Japan is smart. They have the tech to make their buildings stable and they also get 7.0 or higher / or lower earthquakes very often. yep. but for them to be hitting all over the place, where they don't normally...that's another story.
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wicked_faery Vice Captain
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Posted: Fri Mar 12, 2010 10:58 am
wicked_faery GuardianIceQueen Apparently Japan had one a few hours before Chilie did. WE didn't hear about that much. But then Japan is smart. They have the tech to make their buildings stable and they also get 7.0 or higher / or lower earthquakes very often. yep. but for them to be hitting all over the place, where they don't normally...that's another story. We have been having earthquakes here for months. We normally do not have them. They are tiny though. Some can feel like, others can not. IT all depends where the center is.
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