Evidence and cause of climate cycles in polar motion |
| |
| Authors: | H Jochmann E Felsmann |
| |
| Institution: | (1) GeoForschungsZentrum Potsdam (GFZ), Division 1, Kinematics and Dynamics of the Earth, Postfach 60 07 51, D-14407 Potsdam, Germany e-mail: vroni@gfz-potsdam.de; Tel.: +49-331-2881449; Fax: +49-331-2881163, DE |
| |
| Abstract: | The long-term variation of polar motion contains a number of periods similar to climate cycles. Two possible causes for these
long-term variations are mass redistributions produced by variations of atmospheric and oceanic circulation, and mass exchanges
between the cryosphere and hydrosphere. Inner-core wobble, which can be inferred from the observed motion of the geomagnetic
pole, is another phenomenon with periods similar to climate cycles. Only observations relating to mass redistributions caused
by atmosphere dynamics and inner-core wobble are available for sufficiently long periods of time to investigate their influence
on climate cycles in polar motion. Both processes contribute to climate cycles in polar motion, but they cannot completely
explain these cycles. Possible sources of climate cycles are discussed.
Received: 20 December 1999 / Accepted: 28 August 2000 |
| |
| Keywords: | : Polar motion Climate Atmosphere Core dynamics |
| 本文献已被 SpringerLink 等数据库收录！ |
|
