ARLA/CLUSTER: Os mistérios geomagneticos

[João Costa > CT1FBF]

The Mystery of Geomagnetic Jerks

In the late 1970s, researchers realized something strange was
happening to Earth's magnetic field.

>From time to time, without any gusts of solar wind to cause it, global
magnetic fields would "jerk," suddenly accelerating in one direction
or another.

A big jerk in 2014/2015 prompted officials to update the World
Magnetic Model years ahead of schedule. A new model of Earth's
interior, just published in Nature Geoscience, may explain this
phenomenon, possibly solving a 40 year mystery.

Get the full story on today's edition of Spaceweather.com