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(Slashdot)   Global Warming shifts Earth's poles, spawning twelve new movies   ( divider line
    More: Interesting, Greenland Ice Sheet, global warming, Earth, North Pole, polar shift, University of Texas  
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2372 clicks; posted to Geek » on 15 May 2013 at 11:18 AM (4 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»

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2013-05-15 03:15:40 PM  
1 vote:

J. Frank Parnell: This is just getting pathetic. There is no way in hell 'global warming' is to blame for the geomagnetic poles wandering.

If we were in fact losing a significant amount of ice which could affect the rotating sphere of Earth, it would have to affect the planet's rotation before it did anything to the poles. I'm not even sure if the weight of ice at the top and bottom of the Earth is relevant at all, because there is no up or down in space. Ice might just naturally gather on the poles because it's colder, and it has nothing to do with the planets rotation, or the poles for that matter.

Redistribution of mass will change the moment of inertia.  Conservation of angular momentum takes over from there.  The Earth wobbles slightly as it rotates, and moving the mass around dictates the magnitude and direction of said wobble.

As an aside, Geophysical Research Letters isn't exactly a fringe journal.  Their review process is pretty rough.
2013-05-15 12:44:17 PM  
1 vote:
Axial precession probably isn't smooth process and there are no records of the precise movement of the pole older then 100yrs..if at all, and 100 years out of a 26,000yr cycle isn't a lot of data.

Anyway shifting a few tones of weight on a 6,000,000,000,000,000,000,000,000 kg planet isn't really going to monkey with the axial precession.  I'm sure mining has shifted more mass then melting glaciers.
2013-05-15 11:41:06 AM  
1 vote:

Kraftwerk Orange: I thought the shifting of the magnetic poles had more to do with the fluctuations within the Earth's spinning iron core.  That's the polar shift we really need to worry about.

Shifting of the geographic poles (as I finally read the article), oh, well, that happens naturally as well.  I'm open to the idea that changing the distribution of mass can change the Earth's wobble, but still, what about all that crust beneath our feet (and magma and such) that is also constantly rearranging itself?

Can we just put some massive strippers on poles on the other side to shift it back?
2013-05-15 11:32:37 AM  
1 vote:
The Day After Tomorrow was on tv last night.  I made the realization that if there ever is a global disaster I am going to make myself a coat out of live dogs.  I'm guaranteed to survive.
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