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  [in Japanese] A Present State and Perspective on Numerical Simulation Studies of Stagnant Slabs  [in Japanese]

Access this Article

Search this Article

Author(s)

    • 吉岡 祥一 YOSHIOKA Shoichi
    • 九州大学大学院理学研究院地球惑星科学部門 Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University

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

  • Zisin (Journal of the Seismological Society of Japan. 2nd ser.)

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 61, S265-S271, 2009-07-31

    SEISMOLOGICAL SOCIETY OF JAPAN

References:  31

Cited by:  1

Codes

  • NII Article ID (NAID)
    10025365880
  • NII NACSIS-CAT ID (NCID)
    AN00305741
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    00371114
  • NDL Article ID
    10438656
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-199
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
Page Top