Last update: July 18th, 2019 at 12:00 am
Today’s Image of the Day from the European Space Agency is a simulation of the magnetic field in Earth’s core.
The model is part of research that recently solved the decades-old mystery of what causes rapid shifts in the magnetic field known as geomagnetic jerks.
When molten matter rises up to reach the outer surface of the core, it generates powerful waves along the magnetic field lines near the core. According to the ESA, this results in sharp changes in the flow of liquid beneath the magnetic field.
Image Credit: European Space Agency