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Effect of the Change in the Geomagnetic Dipole Moment on the Rate of the Earth's Rotation

Published online by Cambridge University Press:  27 June 2016

Takesi Yukutake
Takesi Yukutake*
Affiliation:
Earthquake Research Institute, University of Tokyo, Tokyo, Japan

Abstract

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The electromagnetic coupling between the Earth's core and the mantle is studied when the geomagnetic dipole field varies periodically. The oscillation of the geomagnetic dipole moment with a period of 8000 years, its amplitude being 50% of the present moment, is capable of causing a fluctuation of 10−11 rad/s in the angular velocity of the mantle. The angular velocity increases with a decrease in the dipole moment.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 48: Rotation of the Earth , 1972 , pp. 229 - 230
Copyright
Copyright © Reidel 1972