South Atlantic Anomaly
EARTH'S MAGNETIC FIELD Space | Cosmology | Astrophysics | Gravity | Sun | Black-Hole | Universe | Solar-System | Moon | Celestial-Bodies | Star | Planets | Saturn | WHAT IS SAA? The South Atlantic Anomaly (SAA) is an evolving weak spot of Earth's Magnetic Field. This unique region has been expanding for over a decade. NASA concludes that it is splitting into two distinct zones. HOW DID EARTH GET A MAGNETIC FIELD? To understand the consequence of splitting, we have to know about magnetic fields. Processes of Earth's iron outer core generates the electric field continuously. This makes the most part of the magnetic field. The magnetic field acts like a shield preventing harmful particles from the sun. The particles are trapped by the magnetic field and thus, prevents it from reaching the surface. The mantle and core magnetic variations below the SAA are the causes. Due to the reduction of magnetic fields, some disruptive particles may close the surface of the Earth. C
