The Earth’s magnetic poles have turned upside down many times throughout our planet’s history. With another change long overdue, scientists have created the most detailed record of the latest switch.
It may sound unbelievable, but the poles of the Earth frequently reverse every 200,000 to 300,000 years. However, now there is no change in about 750,000 years and experts have warned that it is still around for a long time.
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The magnetic field is charged by the outer molten metal core of Earth. It is very important for life on our planet, plays an important role in navigation systems and also protects from radiation from outer space.
About 40,000 years ago, it attempted a transformation before returning to its original position. This NASA illustration captures a major disruption to the scene during the reverse process:
We do not know much about the effects of such a flip, except that once it is complete, the needle on the compass will tell us that north is south and south is north. The new research has provided a better understanding of the geophysical events that lead to change and how our planet then reacts.
The research was carried out by scientists from the National Polar Research Institute of Japan (NIPR). It is revealed that the school became unstable for at least 10,000 years before the directional change did finally happen, and the complete reversal process took at least 20,000 years to complete.
The team came to conclusions after collecting a series of samples and performing magnetic analyzes of rocks and rocks. Yuki Haneda, a project researcher at NIPR, said: “Our data is one of the most detailed paleontological records in the Matuyama-Brunhes geomagnetic reversal process, providing insight into the geomagnetic reversal mechanism.”
Regulators now plan to figure out how geomagnetic reversal affects plankton and flora by studying marine microorganisms and the pollen data they collect in their samples. .
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