現在地震研客員のProf. Alex M. Forte(Universite' du Que'bec a` Montre'al )
にマントルダイナミクスに関する講議をお願いしました.7月末までの間に
シリーズで3回程度行っていただく予定です.
予測地球科学コースの学生をはじめ,多くの皆さんのご来聴をお待ちしております.
歌田久司(多圏地球COEグループB2)--------------------------------------------------------------------------- COE特別セミナーシリーズ第1回 日時:平成16年6月11日(金)10:15〜11:45 場所:3号館326室 講師:Dr. Alex M. Forte(Universite' du Que'bec a` Montre'al ) "Numerical Modelling of Buoyancy Induced Flow in Earth's Mantle: Application to Global Geophysical Surface Observables" (1) Introduction - thermal convection modelling and global seismic tomography - present-day mantle dynamics and convection-related surface observables (2) Modelling Viscous Mantle Flow 2.1 Analytical Models of Incompressible Flow in a 3-D Spherical Shell - basic field equations and poloidal and toroidal flow solutions - poloidal Green functions in the spectral domain - spectral geodynamic kernels functions for surface observables 2.2 Numerical Models of Compressible Flow with Radial Viscosity Variations - linearized field equations - covariant tensor equations and Generalized Spherical Harmonics - poloidal and toroidal systems of flow equations in the spectral domain (the propagator equations) - internal boundary conditions: phase-change and chemical boundaries - surface boundary conditions - treatment of hydrostatic perturbations in the core - re-normalized flow equations using logarithmic viscosity and logarithmic density representations (3) Modelling Convection-Related Surface Observables - outline of recent radial viscosity inferences - geodynamic kernels functions - predicted surface observables based on seismic tomography (4) Concluding Comments => Preview of Lecture 2 ("Modelling Mantle Dynamics with Rigid Tectonic Plates and Internal Viscosity Heterogeneity") NOTE: This is a proposed outline which may be further modified. A printed list of references will be made available for those who wish to pursue a more detailed reading of the relevant published literature. -----------------------------------------------------------------------------