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Last update: T_KG (22.05.2001)
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Last update: CADEK/MFF.CUNI.CZ (03.04.2008)
Understanding relationship between mantle convection and gravitational field of a planet. |
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Last update: prof. RNDr. Ondřej Čadek, CSc. (06.10.2017)
Zápočet je udělen za pravidelnou aktivní účast a vypracování krátké seminární práce. |
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Last update: CADEK/MFF.CUNI.CZ (03.04.2008)
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Last update: T_KG (11.04.2008)
Seminar |
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Last update: T_KG (10.05.2002)
Relationship between seismic velocity anomalies and densities. Gravitational signal of density anomalies in the mantle. Spectral representation of the gravity. Concept of dynamic topography and its relationship to the real topography. Isostatic compensation. Can we determine the dynamic topographies of the surface and internal density interfaces? Flow in the mantle and deformation of density interfaces Stokes' problem. Rheology of mantle and lithosphere. Spectral solution of the Stokes' problem in a spherical shell. Selfgravitation. 'Realistic' rheologies. Inclusion of lateral viscosity variations. Boundary conditions What are the appropriate boundary conditions? Plate velocities, free slip and no slip. Approximation of mechanical behaviour of the lithosphere: Membrane dynamics. Role of lateral viscosity variations close to the boundaries. Inferences of viscosity from the geoid Formulation of the inverse problem. Parameterization of density and viscosity. Local and global inverse techniques. Recent papers and models. Comparison with results of mineral physics experiments and postglacial rebound analyses. Literature
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