Mass heterogeneities and convection in the earth's mantle inferred from gravity and core-mantle boundary irregularities |
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| Authors: | Ond?ej ?adek Ctirad Matyska |
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| Institution: | (1) Department of Geophysics, Faculty of Mathematics and Physics, Charles University, V Hole ovi kách 2, 180 00 Praha 8, Czechoslovakia |
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| Abstract: | Mass heterogeneities in the earth's mantle are retrieved from the gravity data and the topography of the core-mantle boundary as well as the topography of the earth's surface. A mantle circulation induced by the heterogeneities is modelled by solving the Stokes problem for incompressible Newtonian fluid. The derived models of mantle motions correlate well with the plate tectonics and point at a close relation between the surface tectonic activity and the processes in the vicinity of the core-mantle boundary. |
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| Keywords: | Gravity anomalies core-mantle boundary mantle heterogeneities mantle convection mantle dynamics |
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