Influence of inner core rotation and obliquity on the inner core wobble and the free inner core nutation

Details Influence of inner core rotation and obliquity on the inner core wobble and the free inner core nutation Influence of inner core rotation and obliquity on the inner core wobble and the free inner core nutation

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29h..45g&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 8, pp. 45-1, CiteID 1203, DOI 10.1029/2001GL014058

Physics

Geophysics

2

Geodesy And Gravity: Earth'S Interior-Dynamics (8115, 8120), Geodesy And Gravity: Rotational Variations, Mathematical Geophysics: Nonlinear Dynamics, Geomagnetism And Paleomagnetism: Core Processes (8115)

Scientific paper

The inner core wobble and the free inner core nutation are studied. A simple Earth model is adopted to derive all the results analytically. As new results over earlier work, the formulas of the frequencies of these two modes taking into account of the rotation rate and the obliquity of the inner core relative to the mantle are obtained. The formula for the inner core wobble is also used to study the inner core rotation relative to the mantle under some other assumptions.

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