第107回ジオダイナミクスセミナー
Geodynamics Seminar
"Structures of a horizontally extended mantle wedge in East Asia:
insights from seismic tomography and thermal modeling"
講 師：Yongshun John Chen
（中国北京大学地球物理学教授・応用地球物理
研究所長，GRC客員教授)
主催 ： 愛媛大学地球深部ダイナミクス研究センター
日時 ： ２００４年７月３０日（金）17：00〜
場所 ： 愛媛大学理学部講義棟 ２０１教室
要 旨
Working with Prof. Dapeng Zhao during my visit to GRC, Ehime University from 1 April to 1 August 2004, I have used seismic tomography and thermal
modeling to investigate the subduction system in the western Pacific and the intraplate earthquakes and volcanisms in East Asian continent.
Tomography results suggest a horizontally extended mantle wedge above both the subducting and stagnant oceanic slabs and low seismic velocity
anomalies observed at depths of 100-300 km could be responsible for both the arc and intraplate volcanisms in East Asia. Preliminary results
of dynamic modeling, which solves for both the subduction induced mantle flow and its resulting temperatures, will be presented. Efforts will
be focused on geodynamic implications of the modeling flow and thermal structures to the Japan subduction system and the tectonics and
volcanisms in East Asia.
問い合わせ先：山崎 大輔 TEL （089）927-8408
E-mail yamazaki@sci.ehime-u.ac.jp
