Saturday, 30 May, 2020

Earth's Magnetic Field Weakens on an Expanded Area, Scientists Say

Earth’s magnetic field weakens, impacting satellites and spacecraft: report Earth`s magnetic field weakens; satellites and spacecrafts malfunction
Sandy Nunez | 23 May, 2020, 05:37

As is known, the magnetic field is not stable.

The satellites are explicitly created to detect and measure the different magnetic signals that causing Earth's magnetic field, allowing experts to spot vulnerable areas. The area between South America and Africa specialists designated as the South Atlantic anomaly.

While this is not going to affect or alarm the general public to a huge extent, it is causing technical difficulties for various satellites and spacecrafts, as the magnetic field getting weaker, charged particles from the cosmos can penetrate through to the altitudes that low-Earth orbiting satellites fly at.

Pole reversal is when the north and south magnetic poles flip. According to the report, the Earth's magnetic field has lost 10 percent of its intensity in the last two centuries. This discovery was made by a team at the European Space Agency (ESA) who got the data from the agency's Swarm constellation - this is a cluster of satellites.

Daily Mail writes that Jürgen Matzka, from the German Research Center for Geosciences, said the following: "The new, eastern minimum of the South Atlantic Anomaly has appeared over the last decade and in recent years is developing vigorously".

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Precise location tracking requires knowing the details of our Earth's magnetic field changes year-to-year, and this rapid shift in magnetic north is forcing us to revise our maps faster than we expected - and the new understanding helps us better predict where north might be in the future. This formed a center of a minimum intensity in just five years. Moving electric charges generate an electric current, and any little changes in that electric current amplify, folding over on themselves and generating a magnetic field - one of the strongest magnetic fields in the solar system, capable of puncturing the surface of the Earth itself and extending thousands of miles into space.

Researchers from the United Kingdom and Denmark have recently spotted speculation of a pole reversal. Researchers believe that this may mean that the anomaly may divide into two different cells.

The ESA warns that satellites in the area could have "technical malfunctions" because of the anomaly.

Researchers say Earth's South Atlantic Anomaly doesn't have enough direct proof of magnetism in Earth's past.

Although that may sound dramatic, that type of event has happened throughout the planet's long history, at a rate of about once every 250,000 years, according to the ESA.