Which interior layer of the Earth is responsible for Earth's magnetic field?

The temperature of the outer core ranges from 4,300 K (4,030 °C) in the outer regions to 6,000 K (5,730 °C) near the inner core.

Because of its high temperature, modeling work has shown that the outer core is a low viscosity fluid (about ten times the viscosity of liquid metals at the surface) that convects turbulently. Eddy currents in the nickel iron fluid of the outer core are believed to influence the Earth's magnetic field. The average magnetic field strength in the Earth's outer core was measured to be 2.5 millitesla, 50 times stronger than the magnetic field at the surface.

More Info: en.wikipedia.org

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29 Comments

Jeff Smith

Ur wrong! It's inner core turning creates magnetic field, elementary school science!

Richard D. Boyle

Fascinating comments but I don’t have a dog in this fight.

Annie

Uhhh! Ok😱

John McLardie

Geomagnetism originates with magnetic elements in the inner core. The geodynamo is driven by outer core convection in conjunction with the Coriolis Effect. the answer is more complex than suggested.

John W Shreve

Jeff Smith,

Michael Doherty

Most people should read about a subject before commenting. The question is a good one and the answer is correct, outer core.

John Moore

According to everything I've ever read it the spinning of the solid inner core that create's the magnetic field.

Elsy O. Stromberg

I thought it was inner core too!

patrhea

I picked inner core to be the center of gravity. I didn't know of an inner or outer core before. Always knew only as THE core of the earth being the center of gravity.

Christopher J Voce

I said inner core too, but I confess it was a wild guess.

Eddie Alexander

I thought so!!! Inner core

Mick Pink

Yes The outer core has an influence on the magnetic field ,but the question was which one is responsible for the magnetic field it is the interactions between the inner core and the outer core that are both responsible for the magnetic field

Mark Wheeless

The better question would be WHY is there a magnetic field. Of course, the existence of a higher being would have to be believed to fully understand THAT answer. Just sayin’.

Steve Kemp

Jeff Smith, the iron in the earth's core exists in molten form which automatically rises to the outer core. The molten iron then swirls around causing an electric field which in turn causes the iron to become magnetised creating the Earth's magnetic field. The inner core is basically a solid which means the iron that helps make it up doesn't move