Cover: Spherical Harmonic Analyses for the Spheroidal Earth, II.

Spherical Harmonic Analyses for the Spheroidal Earth, II.

Published 1965

by Anne B. Kahle, J. W. Kern, Ernest H. Vestine

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A spheroid approximates the earth more accurately than does a sphere. Before analyzing the data over the surface of the earth by spherical harmonic series, they must be corrected to the appropriate values on a true sphere. The change in the earth's radius and latitude, and in the direction of the vector components must be considered. The corrections have been applied to values derived from existing analyses of the earth's magnetic field.

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