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Did The Chilean Quake Shift Earth's Axis
Terra Daily ^ | 3/12/2010 | Dr. Tony Phillips

Posted on 03/15/2010 7:58:12 PM PDT by ErnstStavroBlofeld

Pictures of widespread devastation leave no doubt: Last month's 8.8 magnitude earthquake in coastal Chile was extremely strong. Indeed, say NASA scientists, it might have shifted the axis of Earth itself. "According to our calculations, the quake moved Earth's figure axis by about 3 inches (8 cm)," says geophysicist Richard Gross of the Jet Propulsion Laboratory in Pasadena, California.

If the Earth tilted over 3 inches, you probably think you would have noticed. But that's not how the "figure axis" works. "The figure axis defines not how Earth is tilted, but rather how it is balanced," says Gross.

Consider the following:

Earth is not a perfect sphere. Continents and oceans are distributed unevenly around the planet. There's more land in the north, more water in the south, a great ocean in the west, and so on. As a result of these asymmetries, Earth slowly wobbles as it spins. The figure axis is Earth's axis of mass balance, and the spin axis wobbles around it.

"The Chilean quake shifted enough material to change the mass balance of our entire planet," Gross says.

A shifting figure axis is nothing new. On its own, the figure axis moves about 10 centimeters per year as a result of "Ice Age rebound." After the last great glacial period some 11,000 years ago, many heavy ice sheets disappeared. This unloaded the crust and mantle of the Earth, allowing the planet to relax or "rebound" back into a more spherical shape. The rebounding process is still underway and so the figure axis naturally moves.

(Excerpt) Read more at terradaily.com ...


TOPICS: News/Current Events
KEYWORDS: catastrophism; earthquakes; geology; geophysics; jpl; science
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1 posted on 03/15/2010 7:58:13 PM PDT by ErnstStavroBlofeld
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To: sonofstrangelove

Interesting stuff.


2 posted on 03/15/2010 8:01:51 PM PDT by aNYCguy
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To: sonofstrangelove

So basically the Chile quake perturbed the globe just a smidgen more than it would have perturbed itself in a year sans earthquakes.


3 posted on 03/15/2010 8:03:33 PM PDT by HiTech RedNeck (I am in America but not of America (per bible: am in the world but not of it))
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To: sonofstrangelove

What impact will this have on globull warming?


4 posted on 03/15/2010 8:05:20 PM PDT by umgud (I couldn't understand why the ball kept getting bigger......... then it hit me.)
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To: SunkenCiv

ping


5 posted on 03/15/2010 8:05:25 PM PDT by randomhero97 ("First you want to kill me, now you want to kiss me. Blow!" - Ash)
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To: SunkenCiv

/mark


6 posted on 03/15/2010 8:05:31 PM PDT by KoRn (Department of Homeland Security, Certified - "Right Wing Extremist")
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To: sonofstrangelove

Yeah, but whose FAULT is it??? /s


7 posted on 03/15/2010 8:07:54 PM PDT by BradyLS (DO NOT FEED THE BEARS!)
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To: sonofstrangelove

It may not seem like much, if even true, but I read somewhere that it may affect GPS signals and space craft communications, as these things rely on very precise measurements.


8 posted on 03/15/2010 8:08:31 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: sonofstrangelove

Does this mean we’ll have palm trees growing in the northern Wisconsin forests?


9 posted on 03/15/2010 8:10:41 PM PDT by From The Deer Stand
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To: umgud; shibumi

Huh.

That explains the horseshoe crabs and seagulls in my front yard.


10 posted on 03/15/2010 8:10:57 PM PDT by Salamander (....and I'm sure I need some rest but sleepin' don't come very easy in a straight white vest.......)
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To: umgud

We will now experience GW for sure. Just ask Algore. Expect the BS to start all over again.

It’s like the Obama hellcare — you shall and you must accept it even if the congresscritters themselves have their own preferred healthcare plan.


11 posted on 03/15/2010 8:12:50 PM PDT by 353FMG (What can Islam possibly contribute to the West other than its very destruction?)
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To: sonofstrangelove
"Ice Age rebound."

I'm surprised Algore hadnt had this term stricken from the scientific lexicon. Unless it can be spun and interpreted as another way to 'splain globull warming.

12 posted on 03/15/2010 8:12:50 PM PDT by capydick (''Life's tough.......it's even tougher if you're stupid.'')
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To: sonofstrangelove

6.7 aftershock less than an hour ago.


13 posted on 03/15/2010 8:15:12 PM PDT by John W
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To: sonofstrangelove

And shortened days by 1.26 milliseconds from now until...


14 posted on 03/15/2010 8:15:19 PM PDT by libbylu ( Palin begins from Wasilla not only a campaign, an Iditarod of a crusade ....YEAH!)
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To: Salamander



"A great disturbance in the force, there is....."

15 posted on 03/15/2010 8:16:42 PM PDT by shibumi ("..... then we will fight in the shade." (Cool Star - *))
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To: sonofstrangelove
Makes sense.


16 posted on 03/15/2010 8:16:55 PM PDT by Rebelbase
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To: sonofstrangelove

The wife and I shift the earth’s axis every night...


17 posted on 03/15/2010 8:16:57 PM PDT by lmr (God punishes Conservatives by making them argue with fools.)
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To: umgud
Did you have to ax us that question? OK, here goes: Global warming, I mean climate change, will cause the ice caps to melt faster. More icebergs will form, and as they drift south, their mass and that of the last polar bears perched atop them will cause a catastrophic movement of the figure axis. The earth's wobble will increase until it flops over and slews madly around space like a top which has lost momentum. Billions of people will be flung into space. We are doomed unless we pass cap and tax now. Or right after we socialize health care, anyway.
18 posted on 03/15/2010 8:20:02 PM PDT by hellbender
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“it is still important to understand how the rotation of the planet changes. “It helps us figure out where a spacecraft is and to navigate it for a precise pinpoint [extraterrestrial] landing,” he said, noting JPL conducted a similar study following 2004’s 9.1-magnitude earthquake in Indonesia.”

http://www.eweek.com/c/a/Midmarket/Earthquake-in-Chile-Shortened-Day-Shifted-Axis-NASA-Says-397735/


19 posted on 03/15/2010 8:30:42 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: sonofstrangelove

It's comin' !!!

20 posted on 03/15/2010 8:30:46 PM PDT by Mannaggia l'America
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To: sonofstrangelove
"According to our calculations, the quake moved Earth's figure axis by about 3 inches (8 cm)," says geophysicist Richard Gross of the Jet Propulsion Laboratory in Pasadena, California.

WE'RE DOOMED!!!

We need to send Al Gore more money, or at leasty give him more awards.

21 posted on 03/15/2010 8:31:22 PM PDT by seawolf101
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To: lmr

I glad I ditched my ex-fiancee.


22 posted on 03/15/2010 8:36:46 PM PDT by ErnstStavroBlofeld ("I have learned to use the word "impossible" with the greatest caution."-Dr.Wernher Von Braun)
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To: ETL

It did affect GPS


23 posted on 03/15/2010 8:37:36 PM PDT by ErnstStavroBlofeld ("I have learned to use the word "impossible" with the greatest caution."-Dr.Wernher Von Braun)
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To: sonofstrangelove

we all need to go over the other side of the earth and push it back up


24 posted on 03/15/2010 8:39:19 PM PDT by AussieJoe
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To: sonofstrangelove
It did affect GPS

Do you have any sources for that? Although I found something on space craft communications, I couldn't find anything on GPS.

25 posted on 03/15/2010 8:41:10 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: sonofstrangelove

This unloaded the crust and mantle of the Earth, allowing the planet to relax or “rebound” back into a more spherical shape.
____________________________________________________________
OOoooh! So that’s how the Earth stopped being flat! =P

Yeah, I’m a ‘flat Earther’, Mr Gore...


26 posted on 03/15/2010 8:42:06 PM PDT by Irenic
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To: ETL

I just remember reading it. It may be in the article


27 posted on 03/15/2010 8:44:22 PM PDT by ErnstStavroBlofeld ("I have learned to use the word "impossible" with the greatest caution."-Dr.Wernher Von Braun)
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To: sonofstrangelove

Yes, evidently it did. All the sidehill wampuses here are running straight instead of in circles.


28 posted on 03/15/2010 8:45:16 PM PDT by bunkerhill7
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To: ETL
The key is GPS1. "Using a global network of GPS receivers, we can monitor the rotation of Earth with high precision," he says. "Changes in Earth's spin and the orientation of Earth's axes affect [the phase and timing of] signals we get from the satellites in Earth orbit." GPS is already used to monitor seasonal changes in Earth's spin. It turns out that tides, winds, ocean currents, and circulation patterns in Earth's molten core modulate Earth's rotation on a regular basis. For instance, a typical day in January is about 1 millisecond longer than a typical day in June. The roughly six-month variation is driven mainly by seasonal winds; there are also changes on time scales of weeks, years, decades and centuries. Earthquakes throw a "spike" into GPS signals, which Gross believes he can find

Its in the article if you read it.
29 posted on 03/15/2010 8:47:27 PM PDT by ErnstStavroBlofeld ("I have learned to use the word "impossible" with the greatest caution."-Dr.Wernher Von Braun)
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To: BradyLS

Why its George W Bush’s fault. Where have you been? /s


30 posted on 03/15/2010 8:48:16 PM PDT by bubman
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To: sonofstrangelove

I had only read your excerpt. But I checked just now and saw it there. I was going to post the same paragraph that you just did which mentions it. Sorry for not checking the article first.


31 posted on 03/15/2010 8:52:32 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: HiTech RedNeck

Actually the disturbed axis is just a bit more than the disturbed axis from earlier this decade.

http://www.theage.com.au/articles/2004/12/28/1103996533891.html


32 posted on 03/15/2010 8:53:11 PM PDT by EBH (The warning bell of Freedom is ringing, can you not hear it?)
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To: sonofstrangelove

It’s interesting the way they describe the mechanics of it. They say that when a tectonic plate moves beneath another to a significant degree, it causes the earth to contract a little and therefore spin faster (like a figure skater pulling her arms in and spinning faster). But the Earth also pulls apart at rift centers such as the mid-oceanic spreading centers. I wonder how that affects the spin rate?


33 posted on 03/15/2010 9:00:02 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: lmr

You realize, of course, there are a couple ways to interpret your comment ;-)


34 posted on 03/15/2010 9:07:03 PM PDT by SoldierDad (Proud Papa of two new Army Brats! Congrats to my Soldier son and his wife.)
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To: BradyLS

“Yeah, but whose FAULT is it??? /s”

Watching the local news a day or so after the quake, they were showing a woman who’s car was buried under a brick wall. She commented that the worst of all of it was that there was nobody to hold responsible for it!

(On a side note, I’m sure a good American lawyer could sue the person who put up the wall, the people who made the bricks, the people who made the car, etc)


35 posted on 03/15/2010 9:07:32 PM PDT by villagerjoel ("The more I learn about islam, the more I want to eat pork." - rock_lobsta)
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To: ETL

They’re also talking about changing the balance axis too?


36 posted on 03/15/2010 9:08:28 PM PDT by HiTech RedNeck (I am in America but not of America (per bible: am in the world but not of it))
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To: AussieJoe

“we all need to go over the other side of the earth and push it back up”

Maybe Atlas shrugged again.


37 posted on 03/15/2010 9:10:38 PM PDT by Beowulf9
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To: sonofstrangelove

I’ve been wondering why I missed that putt.


38 posted on 03/15/2010 9:11:02 PM PDT by Minn (Here is a realistic picture of the prophet: ----> ([: {()
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To: HiTech RedNeck

I don’t know. Would that cause a slight wobble in addition to a faster spin?


39 posted on 03/15/2010 9:11:44 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: sonofstrangelove
"According to our calculations, the quake moved Earth's figure axis by about 3 inches (8 cm)," says geophysicist Richard Gross of the Jet Propulsion Laboratory in Pasadena, California.

Rove, you magnificent bastard!

40 posted on 03/15/2010 9:11:55 PM PDT by JRios1968 (The real first rule of Fight Club: don't invite Chuck Norris...EVER)
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To: ETL

Wouldn’t it be something like the ballerina managing to spin on her heel instead of her toe?


41 posted on 03/15/2010 9:12:42 PM PDT by HiTech RedNeck (I am in America but not of America (per bible: am in the world but not of it))
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To: sonofstrangelove

That is what “Chili” does.


42 posted on 03/15/2010 9:15:15 PM PDT by jongaltsr (It)
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To: AussieJoe

LOL!!!! Great idea! ; ~ )


43 posted on 03/15/2010 9:17:48 PM PDT by antceecee (Bless us Father.. have mercy on us and protect us from evil.)
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To: HiTech RedNeck

Yes, looks like they are.

I still haven’t really read the posted article yet. Perhaps tomorrow I will. I was going more by what I understood from previous articles I read on it. In any case, it’s late where I am and I need to get to sleep.


44 posted on 03/15/2010 9:18:11 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: HiTech RedNeck
Wouldn’t it be something like the ballerina managing to spin on her heel instead of her toe?

Or his...

Image and video hosting by TinyPic

Definitely going to bed now! :)

45 posted on 03/15/2010 9:25:29 PM PDT by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: SoldierDad
there are a couple ways to interpret your comment

Damn... You're onto us. I shouldn't have built the geomorphography machine. It sits right next to the shrink ray and the global warming machine that I built for BoooshDarthCheney. ;-)
46 posted on 03/15/2010 10:23:44 PM PDT by lmr (God punishes Conservatives by making them argue with fools.)
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To: lmr

LOL


47 posted on 03/15/2010 10:25:48 PM PDT by SoldierDad (Proud Papa of two new Army Brats! Congrats to my Soldier son and his wife.)
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To: sonofstrangelove
Earthquakes throw a "spike" into GPS signals, which Gross believes he can find

Any deviation that is caused by fluctuations in the rotational axis by any of the forces mentioned can easily be recalibrated using literally tens of thousands of positions on Earth that are known to a very high precision. This guy sounds like he's surfing for a gubmint grant to me. "Gimme enough money and I can prove that the Sun still rises in the east despite the Chilean earthquake".....

48 posted on 03/15/2010 11:04:40 PM PDT by Thermalseeker (Stop the insanity - Flush Congress!)
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To: Thermalseeker
He already has a nice job working for the JPL/NASA laboratory.He is already paid by the government
49 posted on 03/15/2010 11:07:56 PM PDT by ErnstStavroBlofeld ("I have learned to use the word "impossible" with the greatest caution."-Dr.Wernher Von Braun)
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To: sonofstrangelove
He is already paid by the government

Maybe he's trying to justify his position at JPL/NASA in an Obamanation? Either that, or he's looking to pick up a little "butter and egg" money. In any event, as always, follow the money and you'll always find the truth.....

50 posted on 03/15/2010 11:11:57 PM PDT by Thermalseeker (Stop the insanity - Flush Congress!)
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