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  1. 防災科研関係論文

Radial and Azimuthal Anisotropy Tomography of the NE Japan Subduction Zone: Implications for the Pacific Slab and Mantle Wedge Dynamics

https://nied-repo.bosai.go.jp/records/2863
https://nied-repo.bosai.go.jp/records/2863
a48211f1-ff1b-4aea-ae05-2e5af09049d1
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Radial and Azimuthal Anisotropy Tomography of the NE Japan Subduction Zone: Implications for the Pacific Slab and Mantle Wedge Dynamics
言語
言語 eng
著者 Motoko Ishise

× Motoko Ishise

en Motoko Ishise

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Hitoshi Kawakatsu

× Hitoshi Kawakatsu

en Hitoshi Kawakatsu

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Manabu Morishige

× Manabu Morishige

en Manabu Morishige

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Katsuhiko Shiomi

× Katsuhiko Shiomi

en Katsuhiko Shiomi

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抄録
内容記述タイプ Other
内容記述 We investigate slab and mantle structure of the NE Japan subduction zone from P wave azimuthal and radial anisotropy using travel time tomography. Trench normal E-W-trending azimuthal anisotropy (AA) and radial anisotropy (RA) with VPV &gt
VPH are found in the mantle wedge, which supports the existence of small-scale convection in the mantle wedge with flow-induced LPO of mantle minerals. In the subducting Pacific slab, trench parallel N-S-trending AA and RA with VPH &gt
VPV are obtained. Considering the effect of dip of the subducting slab on apparent anisotropy, we suggest that both characteristics can be explained by the presence of laminar structure, in addition to AA frozen-in in the subducting plate prior to subduction.
言語 en
書誌情報 en : Geophysical Research Letters

巻 45, 号 9, p. 3923-3931, 発行日 2018-05-16
出版者
言語 en
出版者 Blackwell Publishing Ltd
ISSN
収録物識別子タイプ EISSN
収録物識別子 1944-8007
DOI
関連識別子 10.1029/2018GL077436
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