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タイトル: Whole mantle SH velocity model constrained by waveform inversion based on three-dimensional Born kernels
著者: Takeuchi, Nozomu
キーワード: Global seismology
Seismic structure
Direct Solution Method
発行日: 2008年10月20日
出版者: Blackwell Scientific Publications
掲載誌情報: Geophysical Journal International. 169(3), 2007-06, pp. 1153-1163
関連URI: http://www.blackwell-synergy.com
抄録: A whole mantle SH velocity model is obtained by using a unique data set and techniques. Body and surface waveforms including major and multi-orbit phases are used as a data set and are inverted by using 3-D Born kernels. The resultant model, SH18CE, reveals the different natures of the two major upwelling systems: the strong low velocity anomalies beneath Africa extend for more than 1000 km from the core-mantle boundary (CMB), whereas those beneath the Pacific are restricted to 300-400 km from the CMB. The results also show the variable natures of stagnant slabs on the 670 discontinuity around Japan: the depths of the strongest high velocity anomalies within the stagnant slabs are different region by region, which is consistent with the detailed delay time tomography model in this area.
URI: http://hdl.handle.net/2261/21004
ISSN: 0956540X
出現カテゴリ:014 自然科学
1314410 学術雑誌論文


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