Representation of the Earth Topography Using Spherical Harmonies

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Abstract
From spectral analyses of the 1° terrain heights of Gates and Nelson (1975), the representation of the earth topography by truncated series of spherical harmonics is obtained. Rhomboidal and triangular truncations at various wavenumbers are exhibited. Abstract From spectral analyses of the 1° terrain heights of Gates and Nelson (1975), the representation of the earth topography by truncated series of spherical harmonics is obtained. Rhomboidal and triangular truncations at various wavenumbers are exhibited.