On the excitation of the earth's polar motion

Details On the excitation of the earth's polar motion On the excitation of the earth's polar motion

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..526c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 12, Aug. 1985, p. 526-529.

Physics

20

Computerized Simulation, Earth Rotation, Polar Wandering (Geology), Equations Of Motion, Pendulums

Scientific paper

One of the conclusions reached by recent studies of Barnes et al. and later Hide was "that atmospheric excitation alone was sufficient to account for the observed polar motion over (the studied) period, that there is apparently no need to invoke substantial excitation either by the fluid core or ... earthquakes". The purpose of the present paper is to point out that their argument that led to the above conclusion is unjustifiable (hence whether the conclusion is in reality true or not is still an open question). The author demonstrates this through a physical "thought" experiment and a numerical simulation.

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