The Spectrum of Torsional Oscillations of the Moon

Details The Spectrum of Torsional Oscillations of the Moon The Spectrum of Torsional Oscillations of the Moon

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000sosyr..34..460g&link_type=abstract

Solar System Research, v. 34, Issue 6, p. 460-468 (2000).

Computer Science

2

Scientific paper

The diagnostic potentialities of the torsional oscillations for probing the structure of the interiors of the Moon are investigated. Models with no core, a liquid core, and a solid core are considered. The profiles of compressional and shear wave velocities V_P and V_S for the lunar interior estimated by Bills and Ferrari (1977), Goins et al. (1981), and Nakamura (1983) from the Apollo lunar seismic network are used. For all these models, the periods of torsional oscillations for n = 2-100 and four overtones have been calculated. The derivatives of the dimensionless eigenfrequency with respect to the dimensionless shear modulus and density are calculated and tabulated for use. These data can be used to determine corrections to the model density and shear modulus distributions due to their small change. The damping of torsional oscillations is studied. Several trial radial distributions of the dissipative function Q are considered.

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