第90回ジオダイナミクスセミナー
　　　Geodynamics　Seminar

　　　　　　　　　
「グローバル地震波トモグラフィー：モデルEhime-2004」
　 "Global seismic tomography : Model Ehime-2004 "　
　　　　　　　
　　　　　　講師：大田悠平（愛媛大学修士１年）　
　
　　　　　　　　
　　　　　　　　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２月１３日（金）午後17時〜
　　　　　場所　：　愛媛大学理学部講義棟　２０１教室　　　

要　旨
　Zhao (2001) applied a novel approach to a large data set of ISC travel times (P, PP, PcP, pP, Pdiff) to determine a whole-mantle 3-D P-wave velocity structure. In this new approach, a grid parameterization is adopted to express the Earth structure; the Moho, 410 and 660 km discontinuities are considered in the inversion; ray paths and travel times are computed with a 3-D ray tracing scheme. Here the model of Zhao (2001) is improved significantly by adding 12,664 teleseismic data recorded by four portable seismic networks South-Africa, Northeast-China, Iceland, Tibet and one permanent network (Ocean Hemisphere Project, OHP) in western-Pacific which are newly installed in regions where few ISC stations exist. All the new data sers were collected from seismograms by the GRC seismo -Lab..




　　　　　　　　問い合わせ先：山崎　大輔 　TEL　　　（089）927-8408
　　　 　　　　　　　　　　　　　　　　E-mail　　yamazaki@sci.ehime-u.ac.jp