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Earth Is Undergoing True Polar Wander, Scientists Say
EarthSky.org ^ | October 2012 | Deborah Byrd

Posted on 10/03/2012 3:31:34 AM PDT by SunkenCiv

Scientists based in Germany and Norway today published new results about a geophysical theory known as true polar wander. That is a drifting of Earth's solid exterior -- an actual change in latitude for some land masses -- relative to our planet's rotation axis. These scientists used hotspots in Earth's mantle as part of a computer model, which they say is accurate for the past 120 million years, to identify four possible instances of true polar wander in the past. And, they say, true polar wander is happening now...

The scientists -- including Pavel V. Doubrovine and Trond H. Torsvik of the University of Oslo, and Bernhard Steinberger of the Helmholtz Center in Potsdam, Germany -- established what they believe is a stable reference frame for tracking true polar wander. Based on this reference frame, they say that twice -- from 90 to 40 million years ago -- the solid Earth traveled back and forth by nearly 9 degrees with respect to our planet's axis of rotation. What's more, for the past 40 million years, the Earth's solid outer layers have been slowly rotating at a rate of 0.2 degrees every million years, according to these scientists...

The theory suggests that if an object of sufficient weight on Earth -- for example, a supersized volcano or other weighty land mass -- formed far from Earth's equator, the force of Earth's rotation would gradually pull the object away from the axis around which Earth spins. A supersized volcano far from Earth's equator would create an imbalance, in other words.

(Excerpt) Read more at earthsky.org ...


TOPICS: Astronomy; Science
KEYWORDS: bernhardsteinberger; catastrophism; chandlerswobble; chandlerwobble; glaciation; joekirschvink; pavelvdoubrovine; poleshift; snowballearth; trondhtorsvik; truepolarwander
Diagram showing solid-body rotation of the Earth with respect to a stationary spin axis due to true polar wander. This diagram is greatly exaggerated. According to Doubrovine and his team, Earth's solid outer layers have been slowly rotating at a rate of 0.2 degrees every million years. Diagram via Wikimedia Commons.

Earth is undergoing true polar wander, scientists say
and more germane to this list:
earth as a tippe top
Google

1 posted on 10/03/2012 3:31:39 AM PDT by SunkenCiv
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To: 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...

Thank you, FReeper to be named later (not)! And to all, do a search on Joe Kirschvink.


2 posted on 10/03/2012 3:34:29 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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Joseph Kirschvink:
Snowball Earth, True Polar Wander, Origin of Atmospheric Oxygen
http://www.gps.caltech.edu/~jkirschvink/

and

http://www.google.com/search?q=chandler+wobble


3 posted on 10/03/2012 3:38:33 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv
The theory suggests that if an object of sufficient weight on Earth -- for example, a supersized volcano or other weighty land mass -- formed far from Earth's equator, the force of Earth's rotation would gradually pull the object away from the axis around which Earth spins.

Obama's ego? The earth is simply trying to reorient to the new gravitational and magnetic center of the universe.

4 posted on 10/03/2012 3:40:56 AM PDT by sphinx
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To: Hardraade

Ping.

That’s two for two so far this week.


5 posted on 10/03/2012 3:50:27 AM PDT by MestaMachine (obama kills and none dare call it treason.)
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To: SunkenCiv

So the Mayans were right?


6 posted on 10/03/2012 3:51:59 AM PDT by circlecity
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To: Hardraade

Ping.

That’s two for two so far this week.


7 posted on 10/03/2012 3:52:41 AM PDT by MestaMachine (obama kills and none dare call it treason.)
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To: SunkenCiv

“These scientists used hotspots in Earth’s mantle as part of a computer model, which they say is accurate for the past 120 million years,”

120 million years? WTH.


8 posted on 10/03/2012 3:58:02 AM PDT by Thebaddog (Remember, Obama said he's only 60% done with his agenda.)
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To: SunkenCiv

Does Al Gore know that Earth is not in Balance?


9 posted on 10/03/2012 4:03:07 AM PDT by sodpoodle
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To: SunkenCiv

Bush’s fault.


10 posted on 10/03/2012 4:08:53 AM PDT by yuleeyahoo (Liberty is not collective, it is personal. All liberty is individual liberty. - Calvin Coolidge)
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To: sodpoodle
Does Al Gore know that Earth is not in Balance?anything?
11 posted on 10/03/2012 4:12:40 AM PDT by bmwcyle (Corollary - Electing the same person over and over and expecting a different outcome is insanity)
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To: sodpoodle

The Center of the Earth is getting hotter and hotter, approaching millions and millions of degrees, which is its response to the burining of carbon fuels and the excess buildup of CO2 in the atmosphere.

We’re all gonna DIE!

But in the view of Al Gore, this is perhaps not bad thing.

Then once again the Earth shall cool, the polar ice caps shall reform, and the oceans shall recede.


12 posted on 10/03/2012 4:12:40 AM PDT by alloysteel ("You have attributed conditions to villainy that simply result from stupidity".)
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To: SunkenCiv
I was wondering why, when I use Google Earth these days, the longitudinal and latitudinal lines - even on a local basis - are crooked, even though the view is tweaked to true north. I do live in the vicinity of Chicago, though, so that makes for a crooked world, too.
13 posted on 10/03/2012 4:23:53 AM PDT by Fester Chugabrew (ABO to the core.)
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To: SunkenCiv

“accurate for the past 120 million years”

Statements like this make my eyes roll so far back in my head they get stuck.

The experts can’t even accurately predict what the local weather is going to be tomorrow.


14 posted on 10/03/2012 4:24:12 AM PDT by almcbean
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To: SunkenCiv

Note to self; Buy new compass in 900 million years.


15 posted on 10/03/2012 4:30:12 AM PDT by 762X51
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To: almcbean
The experts can’t even accurately predict what the local weather is going to be tomorrow.

But they can predict yesterday's weather perfectly, and isn't that clear evidence of the validity of their model?

It works like this. I use a mathematical equation to correlate the last 7 days of weather to a 1962 edition of TV Guide. It is 100% accurate, so how could you possibly dismiss its accuracy for predicting tomorrow's weather?

Where could the flaw be in that?

16 posted on 10/03/2012 4:39:07 AM PDT by SampleMan (Feral Humans are the refuse of socialism.)
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To: SunkenCiv

Are they messing around with those computer “models” again?

It’s strange that all of these doomsday dolts whine and bellow about some perceived “tragedy that only they can “prove” with “their” computers.

But deny what we, and common sense, can plainly see and prove, like whether or no Obama is ruling the country.

Where’s the computer model on that?


17 posted on 10/03/2012 5:25:25 AM PDT by FrankR (They will become our ultimate masters the day we surrender the 2nd Amendment.)
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To: FrankR

btt


18 posted on 10/03/2012 5:28:17 AM PDT by KSCITYBOY
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To: SunkenCiv

So Guam could tip over?


19 posted on 10/03/2012 5:35:27 AM PDT by Obadiah (The corrupt MSM is the enemy of the American people.)
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To: All

As a result, laws must be passed requiring us all to drive on the left side of the road.


20 posted on 10/03/2012 5:40:05 AM PDT by mmichaels1970
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To: SunkenCiv

What would that do to communications satellites (GPS) placed in geosychronous orbits? Are they “smart” enough to automatically update their relative polar and equatorial positioning offsets?


21 posted on 10/03/2012 5:41:10 AM PDT by equaviator (There's nothing like the universe to bring you down to earth.)
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To: SunkenCiv

"Excellent...everything proceeds according to plan..."

22 posted on 10/03/2012 5:46:13 AM PDT by JRios1968 (I'm guttery and trashy, with a hint of lemon. - Laz)
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To: SunkenCiv

Yeah, and the continents are shifting, and the poles are moving around, and the moon is moving away from us 1.5 inches per year and the sun is going to burn out in 4.5 billion years and Bush is to blame for it all.


23 posted on 10/03/2012 6:02:43 AM PDT by I want the USA back
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To: SunkenCiv
A UN global carbon tax is the only way we can fix this.

Otherwise we are doomed.

24 posted on 10/03/2012 6:04:20 AM PDT by E. Pluribus Unum (Government is the religion of the psychopath.)
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To: JRios1968

Magnetic North has been shifting for years. airport runways have to be re designated due to this shift. search north pole shift for related articles. jmho.


25 posted on 10/03/2012 6:06:04 AM PDT by sniper63 (If Obama pats himself on the back anymore, his shoulder will dislocate.....)
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To: SunkenCiv
That the earth's interior is dynamic in relation to the surface has been known for some time as the magnetic pole has moved about, an indication the metallic core and the fields it's movement generates move slowly.

It would follow that in places where the earth's crust is thinner ‘hot spots’ would occur and that is what the authors were tracking and extrapolating from those past ‘hot spot’ tracks. It appears the authors are claiming better confirmation rather than any new theory.

26 posted on 10/03/2012 6:17:26 AM PDT by count-your-change (You don't have to be brilliant, not being stupid is enough.)
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To: JRios1968

Stagmire !


27 posted on 10/03/2012 6:34:08 AM PDT by Eric in the Ozarks (In the game of life, there are no betting limits)
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To: SampleMan
The experts can’t even accurately predict what the local weather is going to be tomorrow. But they can predict yesterday's weather perfectly, and isn't that clear evidence of the validity of their model?

I agree with the sentiment you express, assuming we can accurately predict long term behavior of a non-linear system with multiple inputs we don't even know yet is pure hubris.

However, this article isn't about weather. It's about the earths crust moving about. That this could happen was theorized about it the 1950s by a guy named Charles Hapgood; as he put it the crust can move about the core of the earth like the loose skin of an orange being able to move around while the inner orange remained stationary. Einstein bought into it enough to write the intro to Hapgood's book so it's not (on the surface) a nutty idea. He was inspired in part by the famous old Piri Reis map from the 1500s and likely based on much older sources. He claimed this map accurately showed the coast of Antarctica which is currently buried under miles of ice and only recently was mapped by us using radar and the like. He came to the idea that Antarctica must have been at a warmer latitude at some point for man to have been able to observe that coast without ice and map it. He thought that was about 10,000 years ago. I think he also suggested that the pole shift was rapid and probably responsible for cataclysmic events like the global floods described in numerous ancient texts.

Modern analysis of ice cores shows that can't have been true, Antarctica wasn't ice free 10,000 years ago at all. Furthermore, the theory of plate tectonics came to dominate and it seems most dismissed the idea that polar shifts and plate tectonics can both happen. Basically I had thought Hapgood's theory was considered quackery by scientists, so I'm surprised to see some reputable ones now saying it actually does happen. Of course they are saying it happens much, much more slowly.

28 posted on 10/03/2012 7:05:05 AM PDT by pepsi_junkie (Who is John Galt?)
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To: SunkenCiv

OR

the Earth and Universe are not that old...

AND

a recent catastrophic Biblical worldwide flood caused a magnetic shift...

Kinda like the one Dr. Walt Brown describes in the hydroplate theory.


29 posted on 10/03/2012 7:35:54 AM PDT by BrandtMichaels
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To: pepsi_junkie

I was joking.


30 posted on 10/03/2012 8:05:30 AM PDT by SampleMan (Feral Humans are the refuse of socialism.)
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To: SunkenCiv

No wonder my compass needle wobbles back and forth when it’s pointing north. North keeps moving around............../s


31 posted on 10/03/2012 9:33:07 AM PDT by OB1kNOb (November 6th is the tipping point for freedom in America.)
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To: SampleMan

Right, about climate change. Which isn’t what the article is about.


32 posted on 10/03/2012 9:39:28 AM PDT by pepsi_junkie (Who is John Galt?)
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To: equaviator

No they would have to be repositioned manually by personnel at the ground station. I used to part of a USAF unit that was “flying” a geosynch bird.

The question would be, do they have enough fuel. Think spray cans. When they’re all out of propellant, they’re done.


33 posted on 10/03/2012 9:59:26 AM PDT by Alas Babylon!
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To: pepsi_junkie
Climate was the example I used, but my point was that a model that is demonstrated to correlate to past events (assuming those events are truly known) does not by definition have validity based on “its track record”.

The reason being that the model has never actually been tested. It might be valid, it might not be.

Often such models state what appears to be a an impressive time period over-which it has been successfully applied. However, if there are only ten data points that are being matched against the model over a 100,000 million year period, it is still just a model based on ten data points. And one should always raise an eyebrow at a 100,000 million year old data point's accuracy. How does one accurately separate plate tectonics from polar wander? Of the inner core, outer core, mantle, and crust which do we use for our reference? There is no master surveying stake to refer to, when everything is moving.

34 posted on 10/03/2012 10:29:41 AM PDT by SampleMan (Feral Humans are the refuse of socialism.)
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To: SunkenCiv

Ah, I can foresee a new Cause célèbre for “Progressives” when anthropogenic global warming finally collapses! “True Polar Wander: We’re all doomed unless we take DRASTIC action NOW to IMMEDIATELY halt true polar wander in its tracks!” First, we must stop consuming Mother Earth’s resources, and second, we must redistribute trillions of dollars of ill-gotten gains from Western economies to down-trodden, have-not “countries” such as Nauru, Tuvalu, Andorra, and Palau. That should stop true polar wander, right? Right?

(In the mean time, Mongo say, “Fracking bad.”)


35 posted on 10/03/2012 11:15:43 AM PDT by catnipman (Cat Nipman: Vote Republican in 2012 and only be called racist one more time!)
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To: mmichaels1970

Actually to start evening things up, they’re going to make us drive on the left side on MWF and on the right side on TTS. On Sunday morning, left side; on Sunday afternoon, right side.

It’s only reasonable.


36 posted on 10/03/2012 12:10:40 PM PDT by Erasmus (Zwischen des Teufels und des tiefen, blauen Meers)
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To: sphinx; circlecity; sodpoodle; yuleeyahoo; bmwcyle; alloysteel; Fester Chugabrew; 762X51; ...

:’D


37 posted on 10/03/2012 5:29:34 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: equaviator; Alas Babylon!

Good one! The satellites will wobble just a bit (they do that anyway, it’s an n-body thing) as the Earth shifts, and barring a big shift, remain in their geostationary orbits.


38 posted on 10/03/2012 5:33:37 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Charles Hapgood talked about this back in the 50’s and 60’s - “Earth’s Shifting Crust: A Key to Some Basic Problems of Earth Science” and “Paths of the Pole”. He argued that the weight of the polar ice caps could cause sudden, catastrophic polar shifts.


39 posted on 10/03/2012 5:53:34 PM PDT by Flag_This (Real presidents don't bow.)
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To: SunkenCiv

If everyone in the western hemisphere pointed their car north and the eastern south and they all punched it at the exact same time could we rectify this? Or more importantly could we move my house a little further south? The winters can be kinda cold.


40 posted on 10/03/2012 5:53:53 PM PDT by Lurkina.n.Learnin (Ignorance is bliss- I'm stoked)
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Keywords joekirschvink; snowballearth; truepolarwander:
41 posted on 12/21/2014 12:30:51 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/ _____________________ Celebrate the Polls, Ignore the Trolls)
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