Lectures & Seminars by Prof. Kendall
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Special lectures and seminars by
(Bristol University)
Data files
Seminars:
Nov. 14 (Fri), 2008 16:00-17:30 @ Lecture Room
"Heterogeneity and anisotorpy in the lowermost mantle and the role of postperovskite"
Nov. 17 (Mon), 2008 16:00-17:30 @ Lecture Room
"Subduction zone anisotropy: observations and modelling"
Nov. 18 (Tue), 2008 16:00-17:30 @ Lecture Room
"Wave propagation in anisotropic media with an emphasis on ray theory"
"Mechanisms for seismic anisotropy: LPO versus SPO"
Friday seminar:
11/13 (Thu) 16:30-17:30 @ Lecture Room
"Mantle upwellings, melt migration and the rifting of Africa: Insights from
seismological investigations"
The rifting of continents and eventual formation of ocean basins is a fundamental component of plate tectonics, yet the mechanism for break-up is poorly understood. The East Africa Rift system (EARS) is an ideal place to study this process as it captures the initiation of a rift in the south through to incipient oceanic spreading in north-eastern Ethiopia. A variety of seismic methods can be used to test models of rifting. I will summarise observations from recent seismic experiments in the Ethiopian Rift and Afar. Special attention is given to evidence of seismic anisotropy in the transitional part of the Ethiopian Rift. Collectively, these observations support models of magma assisted rifting, rather than those of simple mechanical stretching.
Host: H. Kawakatsu