Saturday , January 29 2022

The Earth's magnetic field is changing rapidly and geologists cannot explain it


Earth's magnetic field is not as simple as it is usually taught: it changes constantly and chaos. Y In order to navigate properly on our planet, we need an updated map in this field. The update takes place every five years, but Something strange seems to be happening.

According to what was published Nature, World Magnetic Model (WMM) of the current world magnetic model, It should be replaced by the end of this year. But open field movements and deformations they make an accelerated version An important geophysical model of the Earth's magnetic sphere.

The US Ocean and Atmospheric Administration (NOAA) released a quick preliminary version of WMM in September missing data, such as calculations, maps, and technical notes. It is expected that this week the WMM corrected and complete version will be released, but the date is not known due to the closure of the US Federal Government.

Sudden changes
The model provides a … assessment of how the magnetic field will not change in the near future. Overall, their forecast error limits become problematic only after about five years. However, during the annual review of the model in early 2018, NOAA researchers and the British Geological Survey found problems.

Things were so places that the space for maneuvering was already limited and until the update they were still almost two years old. Soon after the introduction of the current model, researchers informed it In the northern part of South America, an intense magnetic region accelerated, which was not anticipated by planners.

Meanwhile, the enormous magnetic field stretching from Chile to Zimbabwe is so weakened that it poses a risk of dangerous levels of radiation being released and damaging the satellites in the area. Also Magnetic North Pole has stopped in Siberia, recently crossing the international date.

Bigger changes in sight?
There is a debate about whether such events cause a complete change or long-term weakening of the whole field. But now, no one is sure what's going on or how to predict these anomalies. Some of these changes have a greater impact than others.

"The fact that the pillar goes fast makes the region more vulnerable to big mistakes"Geomagnetic Arnaud Chulliat from Boulder University, Colorado, said researchers are providing multi-year data to provide a short-term solution that allows us to reach 2019 with a normal update that is still planned at year-end.

Finally, time will show whether these updates will be provided on a regular basis or every five years as they have been. Butgeologists are also working hard to discover what underground meteorological events are causing this change and what it means for the future.

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