Spherical harmonic expansion of the Earth's crustal thickness up to degree and order 30 Authors
Received: 14 December 1990 DOI:
Cite this article as: Čadek, O. & Martinec, Z. Stud Geophys Geod (1991) 35: 151. doi:10.1007/BF01614063 Summary
The knowledge of the depth of the Mohorovičic' discontinuity (Moho) is important for investigating the 3-D structure of the Earth's interior, since the variations in the crustal thickness can significantly affect geophysical observations made at the Earth's surface. In this paper, the information about the topography of the crust-mantle boundary is compiled from various sources and the crustal thickness is represented in a spherical harmonic expansion up to degree and order 30.
A. Mohorovičić: Das Beben vom 8. V. 1909. Jahrbuch des Meteorologischen Observatorium 9, Teil 4, Zagreb 1910.
A. M. Dziewonski, D. L. Anderson: Preliminary reference Earth model. Phys. Earth Planet Inter., 25 (1981), 297.
J. H. Woodhouse, A. M. Dziewonski: Mapping the upper mantle: Three-dimensional modeling of earth structure by inversion of seismic waveforms. J. Geophys. Res., 89 (1984), 5953.
J. Goslin, P. Beuzart, J. Frauchetau, X. Le Pichon: Thickening of the oceanic layer in the Pacific Ocean. Marine Geophys. Res., 1 (1972), 418.
N. A. Belyaevsky: Structure of the Earth Crust from Geologic-geophysical Data (in Russian). Nedra, Moscow, 1981.
Tectonic map of Northern Eurasia. Relief of the “Moho” surface compilated by N. A. Belyaevsky and I. S. Volkovsky. Moscow, 1980.
R. Meissner, Th. Wever, E. R. Flüh: The Moho in Europe — Implications for crustal development. Ann. Geophys. 5B (4, 1987), 357.
R. J. Allenby, C. C. Schnetzler: United States crustal thickness. Tectonophysics, 93 (1983), 13.
O. L. Colombo: Numerical methods for harmonic analysis on the sphere. Report No. 310, Ohio State Univ., Columbus, Ohio 1981.
A. Tarantola: Inverse Problem Theory. Method for Data Fitting and Model Parameter Estimation. Elsevier, Amsterdam, 1987.
Z. Martinec: Program to calculate the least-squares estimates of the spherical harmonic expansion coefficients of an equally angular-gridded scalar field. Computer Physics Communications, 64 (1991), 140.
© Academia, Publishing House of the Czechoslovak Academy of Sciences 1991