Without a doubt it is one of the reasons why our planet is habitable: protects us from the extreme radiation of space. Your name? Earth’s magnetic field. Generated by liquid metals that move in the nucleus of our planet, The Earth’s magnetic field extends from tens to hundreds of thousands of kilometers in space, protecting us when diverting the solar particles.
But, as the iron and nickel inside our planet move, so does the magnetic field of the earth, which means that the poles (the north and the south) are also in constant movement. Recently, The position of the magnetic north pole officially changed, As its displacement continues from Canada to Siberia.
In its current orientation, the magnetic field lines form closed loops that are directed from south to north on the surface of the planet and after north to south inside. So, Every thousand years, the magnetic field invests its polarity randomly.
The last cataclysm of this type occurred About 41,000 years, leaving a mark on Laschamp lava flows, In France. As the field weakened only 5 % of its current intensity, the investment process allowed a surplus of cosmic rays to pass to the Earth’s atmosphere.
Ice and marine sediments retain the footprints of this solar bombardment with isotope levels of beryllium-10 that doubled during the “Laschamps event”, according to a study. Now we can experience this epic transformation thanks to the information collected by the Swarm satellite mission of the European Space Agency.
Since 2013, the Swarm constellation ESA has been measuring magnetic signs of the nucleus, the mantle, the cortex, the oceans, the ionosphere and the magnetosphere of the earth so that we can better understand the geomagnetic field of our planet and predict its fluctuations.
https://www.youtube.com/watch?v=6tc7xi0iuyu
Combining satellite data with the evidence of the movements of the land magnetic field lines, The geo -scientists mapped the Laschamps event and represented it by natural noises such as the crunch of the wood and the crash of rocks.
“Understand these extreme events It is important to know what will happen in the future, the space climate predictions and the evaluation of its effects on the environment and the terrestrial system, ”explains Sanja Panovska, geophysics of the German Research Center in Geosciences and one of those responsible for the creation of this” intra -type “sound.