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I understand that the Coriolis force from the earth rotation organizes the current flow in the earth outer core into columns of rotation the axis of which parallel the earth rotation axis. That produces the magnetic field lines approximately emanating from the two rotation poles. If the earth rotation decelerates to a stop quickly, will there still be a earth magnetic field as before, or will it oscillate chaotically or even disappear all together as the random convective vorticities of the outer liquid core current cancel each other on average macroscopically?

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