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Dynamical mechanisms controlling formation and avalnche of a stagnant slab
https://hiroshima.repo.nii.ac.jp/records/2008647
https://hiroshima.repo.nii.ac.jp/records/2008647fc7eec72-e248-44ea-a07a-b5e79505dc6f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PhysEarthPlanetInter_183_309.pdf (6.4 MB)
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| Item type | デフォルトアイテムタイプ_（フル）(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-18 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Dynamical mechanisms controlling formation and avalnche of a stagnant slab | |||||||||||
| 言語 | en | |||||||||||
| 作成者 |
Nakakuki, Tomoeki
× Nakakuki, Tomoeki
× Tagawa, Michio
× Iwase, Yasuyuki
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| アクセス権 | ||||||||||||
| アクセス権 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 権利情報 | ||||||||||||
| 権利情報 | Copyright (c) 2010 Published by Elsevier B.V. | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Stagnant slab | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Subduction | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Mantle convection | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Rheology | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Numerical modeling | |||||||||||
| 主題 | ||||||||||||
| 主題Scheme | NDC | |||||||||||
| 主題 | 450 | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述 | We performed a numerical study to understand the dynamical mechanism controlling the formation and avalanche of a stagnant slab using two-dimensional dynamical models of the integrated plate-mantle system with freely movable subducting and overriding plates. We examined slab rheology as a mechanism for producing various styles of stagnating or penetrating slabs that interact with the 410-km and 660-km phase transitions. The simulated results with the systematically changed rheological parameters are interpreted using a simple stability analysis that includes the forces acting on the stagnant slab. Slab plasticity that memorizes the shape produced by past deformation generates slab stagnation at various depths around the 660-km phase transition. The slab stagnates even beneath the 660-km phase boundary, with a gentle Clapeyron slope. Feedbacks between trench backward migration and slab deformation promote each other during the slab stagnation stage. Slab viscosity also determines the final state of the subducted slab, that is, it continues stagnation or initiates penetration. A low viscosity slab can finally penetrate into the lower mantle because the growth time of the Rayleigh–Taylor instability is shorter. After the avalanche, the direction of the trench migration changes depending on the lower mantle slab viscosity. | |||||||||||
| 言語 | en | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Elsevier Science BV | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | journal article | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | AO | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |||||||||||
| 関連情報 | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1016/j.pepi.2010.02.003 | |||||||||||
| 関連情報 | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | http://dx.doi.org/10.1016/j.pepi.2010.02.003 | |||||||||||
| 収録物識別子 | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 0031-9201 | |||||||||||
| 収録物識別子 | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA00773963 | |||||||||||
| 開始ページ | ||||||||||||
| 開始ページ | 309 | |||||||||||
| 書誌情報 |
Physics of the Earth and Planetary Interiors Physics of the Earth and Planetary Interiors 巻 183, 号 1-2, p. 309-320, 発行日 2010-11 |
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| 旧ID | 30897 | |||||||||||
