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A new documentary about earths polar shift is available online at:http://www.cbc.ca/documentaries/natureofthings/2010/northgoessouth/
Facts about Magnetic North Pole
Since the 70s, the pole has moved more than 1500 km at a rate of 10 kilometres a year. In the 1980s, this increased to 30 km a year. Today, the Pole travels 50, even 60 km – close to 150 metres a day.
Scientists don’t quite know why its speed has increased these past 20 years. The magnetic pole is moving northwest of the geographic pole and may soon be across the Arctic Ocean in Siberia.
To find their bearings, sailors the world over must know the exact angle of difference between the two geographic and the magnetic north poles: the ‘magnetic declination.’
The magnetic pole moves from the North to the South and vice versa every 250,000 years on average and does it very suddenly. Over 180 reversals have been recorded already.
As the intensity of the magnetic field tends to diminish, our planet becomes more susceptible to solar storms. In 100 years, the intensity has decreased by 15%.”
http://www.cbc.ca/documentaries/natureofthings/2010/northgoessouth/
Video retrieved from: http://www.pbs.org/wgbh/nova/magnetic
Some airports,like Tampa,FL,
have had to change the designations of their runways because magnetic North has changed so much.
The designation of a runway is derived from its heading,
reduced by one column and the other direction is,of course,
180° opposite.
For example,
a runway heading of 320° would be Runway 32.
Going the opposite direction on the same runway would be 140°,
which would be Runway 14.
This means that these runways have changed over 10°
to have to be changed from 32 to 31 or 33.
That is a lot of change.
To read more:
http://www.foxnews.com/scitech/2011/01/06/magnetic-north-pole-shifts-forces-closure-florida-airport/
The movement northward of the magnetic north pole since the ~1830′s tracks similarly to the global warming trend from the same time period.