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Displacement of magnetic north pole forces updates to the navigation model



January 14, 2019 10:25:17

Rapid changes in the magnetic north pole of the Earth are forcing researchers to make an unprecedented early update of a model that helps aircraft, planes and submarines in the Arctic to navigate, according to scientists.

Key points:

  • The pole of the vagabond is driven by unpredictable changes of liquid iron to the interior of the Earth
  • Recent changes to the North magnetic pole will not affect most of the people who do not belong to the Arctic
  • In most places, smartphone compasses would point to incorrect failures

The compass needles point to the magnetic north pole, a point that has unexpectedly exploded from the north coast of Canada a century ago to the center of the Arctic Ocean, to Russia.

"It's moving about 50 km at year. It did not move much between 1900 and 1980, but it has accelerated a lot in the last 40 years," said Ciaran Beggan, from the British Geological Survey (BGS) of Edinburgh.

The year 2020 saw a five-year update of the world magnetic model, but the US Army called for an unprecedented early revision, he said. BGS executes the model with the National Oceanic and Atmospheric Administration of the United States.

An update will be released on January 30, according to Nature magazine, delayed as of January 15 due to the blackout of the United States government.

Dr Beggan said that the mobile phone affected navigation, mainly in the Arctic Ocean in northern Canada. NATO and the American and British military are among those who use the magnetic model, as well as civilian navigators.

The pole of the vagabond is driven by unpredictable changes of liquid iron to the interior of the Earth.

"The fact that the pole becomes faster makes this region more prone to major mistakes," said Arnaud Chulliat, geomagnetist at the University of Colorado Boulder and NOAA's National Environment Information Centers.

But Dr Beggan said that recent changes to the North magnetic pole would be unnoticed by most non-Arctic people, such as those who use smartphones in New York, Beijing or London.

The navigation systems in cars or phones are based on radio waves from satellites located above the Earth to identify their position on the ground.

"It does not really affect the average or low latitudes," Dr Beggan said. "It would not really affect anyone driving a car."

Many smartphones have built-in tabs to help guide maps or games like Pokémon Go.

However, in most places, the compass was fractionally incorrect, in the mistakes allowed in the five-year models, Dr. Go up



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January 14, 2019, 08:55:13

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