The ellipticities of surfaces of equal density inside the earth

Details The ellipticities of surfaces of equal density inside the earth The ellipticities of surfaces of equal density inside the earth

Jun 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973pepi....7..203b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 7, Issue 2, p. 203-212.

Physics

2

Scientific paper

Values of the ellipticities ɛ of surfaces of constant density inside the earth and of Radau's parameter η have been re-calculated for several recent earth models. The effects on the calculated ɛ and η of changes in the assumed moment of inertia of the earth, of the assumed inner-core density, and of taking account of free earth oscillation data, are separately indicated. The results show that there is no need at present to re-calculate the ellipticity corrections to seismic travel times, though the need may arise later. For all recent earth models, η continues to be between zero and 0.6, so that Radau's approximation continues to be satisfactory.

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