Seismic Delay Times: Correlation with Other Data

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Science  10 Nov 1967:
Vol. 158, Issue 3802, pp. 783-785
DOI: 10.1126/science.158.3802.783


Travel-time residuals of seismic P-waves were expanded in spherical harmonics to determine their global variations. The expansion cofficients were correlated with similar coefficients of geopotential, variations in heat flow, and the surface topography of Earth. Although none of the correlation coefficients is very high, best values are between the seismic delay times and variations in gravitational potential and between heat flow and surface topography.