It isn’t easy to study the core of the earth, considering the fact that it is 3000 kilometers below the crust. A research paper published in Nature Geoscience confirm that there is a jet stream flowing in the core of the earth. The researchers have made use of data from the satellite for this finding.
Three Swarm satellites were deployed by the European Space Agency in 2013 to study magnetic signals from the earth’s crust, core, oceans, ionosphere, mantle and magnetosphere. The magnetic field of the earth is the primary source of all the data that the scientists have access to about the core.
The research revealed that molten iron is flowing in a 420km wide river towards the west. The average speed of the stream is 50km per year, which is about a thousand times faster than the speed with which tectonic plates move. The researchers said that the jet stream is accelerating and can even change switch direction due to the forever changing magnetic fields.
It is believed by the scientists that the jet stream can answer the mystery of the pockets of concentrated magnetic fields in the northern hemisphere. Although, they haven’t found the answer to why the jet stream is gaining pace. Th molten river has been gaining speed since the year 2000, the report said.
Phil Livermore, the lead researcher at the University of Leeds said that the satellites are providing the sharpest x-ray images yet of the earth’s core. This has helped the scientists see the jet stream clearly and they can better understand the reason of its presence.
Swarm satellites are also expected to reveal the reason behind the weakening of the earth’s magnetic field. This might also answer the speculation of pole reversal.