The Earth’s magnetic poles are not heading towards a reversal, as speculated, scientists have found.
During the past 180 years, Earth’s magnetic field strength has decreased by about 10%. Simultaneously, an area with an unusually weak magnetic field has grown in the South Atlantic off the coast of South America. This area, where satellites have malfunctioned several times due to exposure to highly charged particles from the sun, is called the South Atlantic Anomaly.
These developments have led to speculation that we may be heading for a polarity reversal. However, the new study, in the journal PNAS, suggests this may not be the case.
Geologists from Lund University in Sweden stitched together evidence stretching back 9 000 years that suggests the current changes aren’t unique, and that a reversal may…