On the calculation of low-frequency oscillations of the Earth's core.

Details On the calculation of low-frequency oscillations of the Earth's core. On the calculation of low-frequency oscillations of the Earth's core.

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991geoji.107..291d&link_type=abstract

Geophysical Journal International, Vol. 107, No. 2, p. 291 - 296

Physics

Earth Core: Oscillations, Earth Core: Nutation

Scientific paper

The problem of calculation of low-frequency oscillations of an ideal rotating compressible fluid is investigated. An original method of solving such a problem based on using characteristic functions of the Poincaré operator is proposed. An efficient scheme of calculation of characteristic numbers and functions of the Poincaré operator is derived. A high rate of convergence of the method is shown. The liquid compressibility is found to have an essential influence on the theoretical nutation amplitude.

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