Friday, 22 February, 2019

Magnetic North Pole Moving Fast Toward Russia, Scientists Say

Earth's magnetic north pole is wandering about 55 kilometres a year 123RFEarth's magnetic north pole is wandering about 55 kilometres a year
Doris Mccormick | 06 February, 2019, 16:10

On Monday, an update of where true north was released nearly a year ahead of schedule. "This out-of-cycle update before next year's official release of WMM2020 will ensure safe navigation for military applications, commercial airlines, search and rescue operations, and others operating around the North Pole". For example, the airport in Fairbanks, Alaska, renamed a runway 1L-19R to 2L-20R in 2009.

For decades, magnetic north was steadily inching away from the geographic North Pole, but for the last few years the north magnetic pole has been moving closer to the North Pole.

'It's not a question of if it's going to reverse, the question is when it's going to reverse, ' Dr Lathrop said. There is a hot liquid ocean of iron and nickel in the planet's core where the motion generates an electric field, said University of Maryland geophysicist Dr Daniel Lathrop.

It does not matter much in the most populated areas, but "near the magnetic pole, the change is faster".

NASA has poured cold water on the idea that magnetic field reversals could lead to an apocalypse, saying in 2012 that, 'The science shows that magnetic pole reversal is - in terms of geologic time scales - a common occurrence that happens gradually over millennia.

The midnight sun shines across sea ice in the Canadian Arctic.

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The Earth has two pairs of north and south poles. And the magnetic poles frequently don't line up with the pole defined by the axis of the Earth's rotation. Since 1990, its location has remained relatively stable, off the coast of eastern Antarctica.

In a story February 4 about the magnetic north pole, The Associated Press erroneously described the pole's change in speed.

"The difficulty is that we don't have a way to directly observe what is happening in the Earth's core so we have to make a lot of assumptions", Arnaud Chulliat, a geomagnetist at the University of Colorado Boulder and NOA, who works on the WMM, told Motherboard.

"The slowly moving plates act as a kind of tape recorder leaving information about the strength and direction of past magnetic fields".

Scientists for the National Oceanic and Atmospheric Administration and the British Geological Survey collaborate to produce a new World Magnetic Model - a mathematical representation of the field - every five years.

But Earth had other plans. This is the reason why they need to be recalibrated to reflect the change in the magnetic north pole. He and his USA counterparts worked on a new model, which was almost ready to be released when much of the US federal government ran out of funding. This portion of the model didn't become available until Monday, a week after most NOAA employees returned to work. The model, which is updated and released every five years, had to be changed before 2020 because Earth's northern magnetic pole is shifting at a rate of roughly 34 miles per year from the Canadian arctic toward Siberia, CNN reported.

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