April 13, 2021

Scientists update the global magnetic model ahead of schedule – The Province

Scientists update the global magnetic model ahead of schedule - The Province


Your compass does not point north as it used to. That's because the planet's magnetic field does not stay still. It has changed so much in recent years that the scientists just updated the model, one year earlier than planned.

The world magnetic model usually is updated every five years, and the next change was to be made by the end of 2019. However, it had to be advanced because the magnetic pole to the north has changed a lot, reported the National Centers for Environmental Information of the United States. on Monday in a statement.

The scientists they are not entirely sure why the pace has accelerated. The magnetic field is what makes the compasses point north and is a critical navigation aid for the military, commercial airlines and shipping, search and rescue operations of the world.

The magnetic north pole is currently in the Arctic Ocean, very north of Canada and relatively close to the real North Pole (that would be the point on the globe where the longitude lines converge, on the axis of rotation of the planet).

"It is moving about 130 meters per day," said Robyn Fiori, an Earth Sciences researcher at Natural Resources Canada, by email. At current speed and course, 'will reach Siberia in less than 40 years'.

Magnetic north has moved about 2,200 kilometers to the north and west since it was first located in the Canadian territory of Nunavut in 1831. It left the continent in 2001. The field also protects Earth from deadly solar radiation, although there is no concern that the function is affected by the changes, says Fiori. 'The Earth's magnetic field will continue to protect us.'

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