Moderators: Darkchilde, Calilasseia




Earth's Inconstant Magnetic Field
12.29.03
Our planet's magnetic field is in a constant state of change, say researchers who are beginning to understand how it behaves and why.
Every few years, scientist Larry Newitt of the Geological Survey of Canada goes hunting. He grabs his gloves, parka, a fancy compass, hops on a plane and flies out over the Canadian arctic. Not much stirs among the scattered islands and sea ice, but Newitt's prey is there--always moving, shifting, elusive.
The movement of Earth's north magnetic pole across the Canadian arctic, 1831-2001. Credit: Geological Survey of Canada.
His quarry is Earth's north magnetic pole.
At the moment it's located in northern Canada, about 600 km from the nearest town: Resolute Bay, population 300, where a popular T-shirt reads "Resolute Bay isn't the end of the world, but you can see it from here." Newitt stops there for snacks and supplies--and refuge when the weather gets bad. "Which is often," he says.
Scientists have long known that the magnetic pole moves. James Ross located the pole for the first time in 1831 after an exhausting arctic journey during which his ship got stuck in the ice for four years. No one returned until the next century. In 1904, Roald Amundsen found the pole again and discovered that it had moved--at least 50 km since the days of Ross.
The pole kept going during the 20th century, north at an average speed of 10 km per year, lately accelerating "to 40 km per year," says Newitt. At this rate it will exit North America and reach Siberia in a few decades.

trubble76 wrote:I wonder if you could ride it in some way, maybe with an iron sled?

Darkchilde wrote:A greek newspaper has put out an article saying that the North Magnetic Pole of the Earth is moving from Canada to Russia with a speed of 60 km/hour.
I looked through sciencedaily and through Google scholar and cannot find anything of the sort. Anyone has any idea whether this is true? Or are they talking about the Earth's axis maybe and have confused the issue? Or maybe there is a sort of cycle the magnetic poles go through?
Thank you for any information.

Brain man wrote:Darkchilde wrote:A greek newspaper has put out an article saying that the North Magnetic Pole of the Earth is moving from Canada to Russia with a speed of 60 km/hour.
I looked through sciencedaily and through Google scholar and cannot find anything of the sort. Anyone has any idea whether this is true? Or are they talking about the Earth's axis maybe and have confused the issue? Or maybe there is a sort of cycle the magnetic poles go through?
Thank you for any information.
And what is the mechanism by which the magnetic poles cycle ?
If you cant produce one consider this a reason to put your thread in the pseudoscience section.





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GENERAL MODNOTE The EE derail has been split and put here: http://www.rationalskepticism.org/pseudoscience/north-magnetic-pole-of-the-earth-has-moved-t21283.html |


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