Internal structure of the moon and moonquakes

Details Internal structure of the moon and moonquakes Internal structure of the moon and moonquakes

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982acaps...1..197s&link_type=abstract

(Acta Astrophysica Sinica, vol. 1, no. 3, 1981, p. 197-201.) Chinese Astronomy and Astrophysics, vol. 6, Mar. 1982, p. 1-4. Tra

Astronomy and Astrophysics

Astrophysics

Lunar Core, Moonquakes, Planetary Structure, Seismology, Selenology, Astronomical Models, Elastic Properties, Radial Distribution, Shear Stress, Stress Analysis, Stress Distribution

Scientific paper

The relationship between the internal structure of the moon and the radial distribution of moonquake foci is considered. It is suggested that this radial distribution is principally determined by the fact that the rigidity of the lunar material decreases with increasing depth. A two-layer model is used to obtain solutions of the elasticity equations for a uniform suface load and a uniform radial body force. It is shown that, when the inner sphere is less rigid than the outer shell, the maximum shear stress is localized near the boundary of the two components, thus explaining why moonquakes are mostly deep quakes. The results also suggest that a liquid core exists in the moon.

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