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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsEarth's Magnetic Pole Is Wandering, Lurching Toward Siberia
Earth's north magnetic pole is on the move, unpredictably lurching away from the Canadian Arctic and toward Siberia. It's wandered so much, that the current representation of the entire globe's magnetic field, just updated in 2015, is now out of date. And so, geologists have come up with a new model.
This updated model, called the World Magnetic Model, was supposed to be published Jan. 15, but it's now been delayed to Jan. 30, on account of the government shutdown.
Once it's made public, the new model will inform a wide array of navigation, including those directing airplanes and ships to people checking Google Maps on their smart devices.
The World Magnetic Model is one of a handful of models another is called the International Geomagnetic Reference Field that track so-called declination, or the difference between true, or geographic, north (that is, the North Pole) and magnetic north (the point where your compass needle points). Knowing that declination for points across the globe allows one to convert between a magnetic bearing and a true bearing, according to a report on the 2015 model. In that way, ships, aircraft, antennas, drilling equipment and other devices can be oriented.
https://www.livescience.com/64486-earth-magnetic-pole-moving.html
Boxerfan
(2,533 posts)Will he stop at nothing....
Sad thing is would you put it past him?.
On a reality note-I have a old compass & the colors that used to match for the N and S are opposite now.
exboyfil
(17,862 posts)Will have impact on some migrating animals. The last time was 72 million years ago. That was 7 million years of so before the K-T event which basically reset animal life.
muriel_volestrangler
(101,311 posts)I don't know if anyone's figured out a way of determining accurately exactly where it was before actual measurements started, but unless they have, it doesn't seem reasonable to think that going closer to the geographical pole is an indication of something unusual.
And the last time it flipped was about 800,000 years ago, not 72 million:
http://www.geomag.bgs.ac.uk/education/reversals.html
SidDithers
(44,228 posts)Reversals have happened regularly and randomly throughout history.
https://www.nasa.gov/topics/earth/features/2012-poleReversal.html
Sid
Blue_true
(31,261 posts)One question. What is the consequence of a magnetic pole flip to life on earth, except screwing up navigation?
Also, how long does a flip take to complete? I read that was millions of years.