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Seismological constraints on mantle dynamics
 
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Thorsten W Becker
(Department of Earth Sciences, University of Southern California;
Earthquake Research Institute, University of Tokyo)
 
“úŽž: 2010”N11ŒŽ5“ú(‹à) 15:00`16:30
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I review recent progress in using a range of constraints from structural
seismology for understanding the mantle system. Such constraints can come from
heterogeneity power spectra,  correlation analysis between global tomography
and geodynamic forward models, and evaluation of flow model predictions in the
light of seismic anisotropy, for example.  Comparisons can yield information
on the mode of mantle convection, and in particular the study of seismic
anisotropy is promising to be a high resolution tool to analyze lithosphere-
asthenosphere interactions. It may be possible to construct geodynamic
reference models and to probe these models quantitatively via their deviations
from the seismological images, learning about mantle rheology, intra-plate
deformation and asthenospheric hydration state in that process.
 
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