Inverting Earth’s magnetic field takes less time than expected.

From time to time, the north and south magnetic poles of the Earth change places. This phenomenon is called magnetic field inversion. Such events do not have any pronounced periodicity. Between the next pole shift can take place as from tens of thousands of years to millions of years.
Inverting the Earth’s magnetic field takes less time than it was thought, magnetic, thousands, maybe magnetic, back, degrees, poles, time, between, period, scientists, similar, lines, magnetic, shifts, Earth, required, surface, decreased

Paleomagnetic data suggests that the last time the inversion of the Earth’s magnetic field occurred 780 thousand years ago - long before the appearance of modern man. At the same time, at the disposal of geologists there is some evidence that even after a change of "polarity", the magnetic field can experience periods of instability. During them, the direction of its lines can quickly change to almost the opposite, and then also quickly return to its original position.
Inverting the Earth’s magnetic field takes less time than it was thought, magnetic, thousands, maybe magnetic, back, degrees, poles, time, between, period, scientists, similar, lines, magnetic, shifts, Earth, required, surface, decreased

In order to better understand these processes, an international team of scientists studied the stalagmites from the Sanxing Cave in southern China. They were formed in the period between 107 and 91 thousand years ago.Paleomagnetic analysis showed that at that time the Earth’s magnetic field experienced a large number of anomalies. The amplitude of the magnetic field reversal during this period sometimes exceeded 100 degrees. At the same time, a pronounced asymmetry was observed in these rotations — with respect to the normal direction, the polarity in the Eastern Hemisphere turned mainly to the south and to the east. The field strength in some areas of the surface was reduced by 90%.
Inverting the Earth’s magnetic field takes less time than it was thought, magnetic, thousands, maybe magnetic, back, degrees, poles, time, between, period, scientists, similar, lines, magnetic, shifts, Earth, required, surface, decreased

But the most interesting thing is the time required for such "turns". In the period between 106 and 103 thousand years ago, it took less than two centuries to shift the magnetic lines by 100 degrees. Previously, scientists believed that such processes stretch over many millennia.
Inverting the Earth’s magnetic field takes less time than it was thought, magnetic, thousands, maybe magnetic, back, degrees, poles, time, between, period, scientists, similar, lines, magnetic, shifts, Earth, required, surface, decreased

Various yellow media often like to frighten their audience with apocalyptic scenarios that the next “turn” of the magnetic field will become almost the end of the world. Of course, it is not. During its existence, the terrestrial biosphere has successfully survived hundreds of magnetic inversions. At the same time, it can certainly cause damage to modern civilization, especially the power supply and navigation systems.But at the moment scientists have no data that would allow at least approximately to calculate the time of the next change of magnetic poles.

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