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

• 吉岡 祥一

  九州大学大学院理学研究院地球惑星科学部門

書誌事項

タイトル別名

• A Present State and Perspective on Numerical Simulation Studies of Stagnant Slabs
• 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

抄録

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.

収録刊行物

• 地震　第２輯

  地震　第２輯 61 (Supplement), 265-271, 2009

  公益社団法人 日本地震学会

キーワード

• Stagnant slab
• Numerical simulation
• 660 km
• Phase transformation
• Trench retreat

詳細情報

• CRID: 1390001204303003136
• NII論文ID: 10025365880
• NII書誌ID: AN00305741
• DOI: 10.4294/zisin.61.265
• ISSN: 18839029
• ISSN: 2186599X
• ISSN: 00371114
• NDL書誌ID: 10438656
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10438656
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可