Swarm constellation

Earth’s magnetic field is gradually weakening

Swarm probes weakening of Earth’s magnetic field.
By Amit Malewar -

Earth’s magnetic field is essential to life on our planet. It is a mind-boggling and dynamic force that shields us from cosmic radiation and charged particles from the Sun. The magnetic field is generally produced by an expanse of superheated, whirling fluid iron that makes up the external center around 3000 km underneath our feet. 

Earth’s magnetic field is regularly envisioned as a ground-breaking dipolar bar magnet at the center of the planet, tilted at around 11° to the axis of rotation. Be that as it may, the development of the South Atlantic Anomaly shows that the processes engaged with producing the field are far more complex. Simple dipolar models can’t represent the ongoing development of the second minimum.

Scientists from the Swarm Data, Innovation, and Science Cluster (DISC) are using data from ESA’s Swarm satellite constellation to understand this anomaly better. Swarm satellites are designed to identify and precisely measure the different magnetic signals that make up Earth’s magnetic field.


Last modified: May 25, 2020