A Present State and Perspective on Numerical Simulation Studies of Stagnant Slabs
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- YOSHIOKA Shoichi
- Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University
Bibliographic Information
- Other Title
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- 滞留スラブの数値シミュレーション研究の現状と今後の展望
- タイリュウ スラブ ノ スウチ シミュレーション ケンキュウ ノ ゲンジョウ ト コンゴ ノ テンボウ
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Abstract
Stagnant slabs have been identified at a depth of about 660 km from recent seismic tomography. In this study I briefly review 2-D numerical simulations of mantle convection, which have been constructed to reveal physical mechanisms of slab stagnation. The effects of the Clapeyron slope of the phase transformation from ringwoodite to perovskite + magnesiowüstite, trench retreat velocity, viscosity jump at the 660-km phase boundary, buoyancy due to a possible metastable olivine wedge inside a slab, and low viscosity due to grain-size reduction associated with the non-equilibrium phase transformation of olivine inside a slab on slab stagnation are presented. Then, I raise some remaining problems on slab dynamics in the mantle transition zone, and show directions toward future research.
Journal
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- Zisin (Journal of the Seismological Society of Japan. 2nd ser.)
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Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 61 (Supplement), 265-271, 2009
SEISMOLOGICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204303003136
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- NII Article ID
- 10025365880
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- NII Book ID
- AN00305741
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- ISSN
- 18839029
- 2186599X
- 00371114
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- NDL BIB ID
- 10438656
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed