Earth's Magnetic Shift

ironsides

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Feb 13, 2009
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TAMPA, Fla. -- Scientists say the Earth's magnetic north pole is moving, so officials at Tampa International Airport are relabeling its main runway to reflect the change.
Airport officials closed the runway until Jan. 13 to repaint numeric designators and change taxiway signs.
The runway has been labeled on aviation charts as 18R/36L, indicating its location along the 180-degree approach from the north and the 360-degree approach from the south. It will become 19R/1L.
The change was required by the Federal Aviation Administration to account for a gradual shift of the Earth's magnetic pole at nearly 40 miles a year toward Russia. It's being caused by magnetic changes in the planet's core.


Read more: Shift in magnetic north requires runway relabeling - Florida AP - MiamiHerald.com
 

lone wolf

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Nov 25, 2006
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Seeing as the Pole (mag) has been in Canadian territory for so long, do you suppose we have some sort of claim to it when it moves into international water (ice)?... ;-)
 

ironsides

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Feb 13, 2009
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It is yours, don't let it go away so easy. Can't let the Ruskies get away with it. has to be a new secret, secret weapon there using. :)
 

Mowich

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Very cool sites, GreenFish. I was really taken by this map of the pole movement over time. That, and the 55 km per year movement that is its current speed towards Russia.
 

DaSleeper

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May 27, 2007
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I first thought this was another global warming thread........my bad

Where I live I think this has meant only a one degree change in deviation in my lifetime of using a compass for map reading in the bush....but I could be wrong since I have been carrying a compass only as a back up since civilian GPS came out in '91.
 

ironsides

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Feb 13, 2009
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Very cool sites, GreenFish. I was really taken by this map of the pole movement over time. That, and the 55 km per year movement that is its current speed towards Russia.
We learned is school that the magnetic pole was constantly moving, but to see it on this map makes it really look impressive. Speed has picked up from about 10km per year (early 1900's) to 40km per year today.
 

taxslave

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A perfect explanation for global warming. The earth is moving on it's axis , causing the northwest passage to be getting farther from the pole causing that part to be warmer.
 

Tonington

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Oct 27, 2006
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A perfect explanation for global warming. The earth is moving on it's axis , causing the northwest passage to be getting farther from the pole causing that part to be warmer.

You're confused....A magnetic pole moving doesn't mean that the Earth's rotational axis is shifting...It means the axis of the magnetic field is moving...
 

Colpy

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Nov 5, 2005
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TAMPA, Fla. -- Scientists say the Earth's magnetic north pole is moving, so officials at Tampa International Airport are relabeling its main runway to reflect the change.

Airport officials closed the runway until Jan. 13 to repaint numeric designators and change taxiway signs.
The runway has been labeled on aviation charts as 18R/36L, indicating its location along the 180-degree approach from the north and the 360-degree approach from the south. It will become 19R/1L.
The change was required by the Federal Aviation Administration to account for a gradual shift of the Earth's magnetic pole at nearly 40 miles a year toward Russia. It's being caused by magnetic changes in the planet's core.




Interesting....

I heard a discussion on climate change with northerners on CBC.

One old Innuit gentleman said what really concerned him was that the elders of the far north could no longer predict where the sun would rise after the long winter night.......... ..a comment left to stand on its own as the panel moved on to discuss the sins of Canada at the Climate Change Conference......

They just ignored him.

Too busy being politically correct.

Interesting.
 

Tonington

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Oct 27, 2006
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The elder specifically said:
that the sun rises in the same place but sets where it has never set before.
And again, for those who weren't paying attention in science class, the Earth's rotational axis is not the same thing as the magnetic field axis. Any axial tilt which would be noticed by the Inuit would be noticed elsewhere as well.

And for those who have never looked into climatology, a shifting rotational axis is one of the three Milankovitch forcings which tip the Earth climate from glacial to interglacial. The tilt of the rotational axis is specifically referred to as the obliquity.
 

Ron in Regina

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Apr 9, 2008
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You're confused....A magnetic pole moving doesn't mean that the Earth's rotational axis is shifting...It means the axis of the magnetic field is moving...


Wasn't the North Pole (Magnetic North) and the Ice Cap itself formerly located in
different places than it is currently found? Like Hudson's Bay (& thus that depression)
or the Sudan Basin (& thus that depression) ???

If so, that might have a significant effect on climate, at least locally (I guess that would
be weather and not climate, if dealing with things locally) ????

I think I read something about this somewhere in the last forty years, though not recently.

The weight of the ice at the Poles, if they where located at different places on the Earth's
surface, on a rotating globe....wouldn't that change its axis of rotation? At least make it
wobbly like an unbalanced wheel if not change its axis of rotation?

I remember something about iron particles (from different eras) being orientated
towards (from lava flows) different specific locations (Magnetic North) being part
of the theory that tie into these different depressions that the Poles may have also
been located at in times gone by. Something along those lines, anyway....
 

Tonington

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The weight of the ice at the Poles, if they where located at different places on the Earth's
surface, on a rotating globe....wouldn't that change its axis of rotation? At least make it
wobbly like an unbalanced wheel if not change its axis of rotation?

Yes, it could change the wobble.