Earth's magnetic field
is increased incredibly quickly, since modern humans arrived in Europe for the
first time, completely reversing its poles in less than a thousand years, a new
study indicates.
Previously, scientists
believed that the magnetic poles switch places every few hundred thousand
years. However, according to Norbert Novatsuka, an expert on pale magnetism of
the German Research Centre of Geosciences, now researchers have found that the
magnetic poles are reversed only 41,000 years ago - shortly after modern humans
came to Europe - and turned around again in less than millennium after.
Reversal of the
magnetic poles is of great importance, especially in today's world, as it is
accompanied by a significant weakening of Earth's magnetic field, which
protects people, and all terrestrial communication with sensitive electronics
from the damaging effects of space radiation.
This study appeared in
the journal Earth and Planetary Science Letters.
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