South Atlantic Anomaly (SAA)

Category: Geography / Space Science / Earth Science

UPSC Notes & Key Pointers

  • The South Atlantic Anomaly (SAA) is a region where the Earth's magnetic field is unusually weak.

  • It is located over parts of the South Atlantic Ocean and South America.

  • The weakened magnetic field allows charged particles from the Van Allen radiation belts to come relatively closer to Earth.

  • Satellites passing through the SAA can experience increased radiation exposure.

  • It is important for spacecraft electronics and satellite operations.

  • Prelims Focus: Earth's magnetic field, radiation belts and satellite vulnerability.