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)
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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.
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