Mathematics – Logic
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pepi...21...83s&link_type=abstract
(International Union of Geodesy and Geophysics, Symposium on Mathematical Geophysics, 12th, Caracas, Venezuela, Aug. 12-24, 1978
Mathematics
Logic
11
Earth Crust, Earthquakes, Geophysics, Seismic Waves, Tectonics, Geological Faults, Sea Of Okhotsk, Tensor Analysis, Viscosity
Scientific paper
Two large, complex deep-focus earthquakes are analyzed, using body waves, to determine the relative locations and equivalent forces of the component events. Details of the source mechanism determination are given, with special emphasis on the means of comparing results for double-couple and more general models. The formalism includes a description of a method for calculating the confidence ellipses around the principal axes of the moment tensor. An interpretation of the results suggests that the mechanism of deep-focus earthquakes is controlled by the buoyancy of the slab and the change in viscosity at the 650 km discontinuity.
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