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Home / Science / Magnetic north pole is changing faster than forecast | News | DW

Magnetic north pole is changing faster than forecast | News | DW



Scientists had planned to launch a new World Magnetic Model (WMM) update on January 15 due to major fluctuations in the Earth's magnetic field. However, due to the closure of the US government, this has been delayed.

Although the magnetic north pole – unlike the geographic North Pole – is constantly moving, the magnetic field is changing faster than scientists had previously predicted, according to a report published by the scientific journal Nature this week.

The World Magnetic Model is updated every five years to take account of changes in the field and the last one took place in 2015. However, in 2016, part of the magnetic field "temporarily accelerated deep under North America of the South and the Eastern Pacific Ocean ", according to Nature .

By 201

8, scientists at the National Oceanic and Atmospheric Administration and the British Geological Survey realized they needed to release an updated WMM because it had become "so inaccurate that it was going to exceed the acceptable limit for navigation errors."

The errant pole is driven by unpredictable changes in the liquid iron insid and the Earth.

Because of the closure of the US government, scientists have not been able to release the updated WMM. Instead, they postponed the date to January 30, hoping that the government will be running ever since. But it is not clear if this will be the case.

Read more: The warming of the Arctic records that drives "wide change" in the climate: study

  Infographic showing changes in magnetic north since 1900

orientation & # 39;

While localization can be tracked using GPS technology, WMM provides the orientation for aircraft, military ships and even smartphones. "Your orientation, the direction you are facing, comes from the magnetic field," said James Friederich, a National Geo-Spatial Intelligence Agency scientist, in 2014, prior to the WMM's latest update.

"Our war fighters use Magnetics to steer their maps. The smartphone camera and various apps can use the magnetic field to determine the direction they are facing. All of these examples require the WMM to provide its own orientation."

But scientists are still obscure about the acceleration of changes in the magnetic field. Changes are fueled by changes in currents – such as those of the ocean – of molten iron in the earth's core. But because they are accelerating, it remains a mystery now.

Read more: Greenland ice sheet melts at "exceptional" speed

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