Splitting Dent in Earth’s Magnetic Field

  • National Aeronautics and Space Administration (NASA) has reported a splitting dent in Earth’s magnetic field over the southern Atlantic Ocean which can be bad news for satellites.
  • This unusual weak spot in Earth’s magnetic is called the South Atlantic Anomaly (SAA).

Genesis of SAA

  • The SAA is caused by the tilt of Earth’s magnetic axis and the flow of molten metals within its outer core.
  • The observed SAA can be also interpreted as a consequence of weakening dominance of the dipole field in the region.

Threat and Challenges

  • Earth’s magnetic field has a protective layer around the planet that keeps ....
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