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2007 Fiscal Year Final Research Report Summary

Seismological study of the composition of the Earth's outer core and the topography of CMB

Research Project

Project/Area Number 18540424
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionKyushu University

Principal Investigator

KANESHIMA Satoshi  Kyushu University, Faculty of Science, Professor (80202018)

Project Period (FY) 2006 – 2007
KeywordsEarth'core / Composition / Seismic array / P4KP / PcP / Core-mantle-boundary / Inner-core-boundary / CMB-topography
Research Abstract

Revealing the composition of the Earth's outer core and the topography of the core-mantle boundary (CMB) is fundamentally important in understanding the formation and evolution of the core, the mechanism of Earth's magnetic field, and the Earth's rotation. This study attempts to put new seismological constraints on the chemical composition, particularly of light elements of the outer core, existence or absence of compositional stratified structure, and the small scale topography of the CMB. Compositionally stratified structures are sought both for the outermost and lowermost of the outer core. Seismic array data are compiled and analyzed for these purposes, and the methods for the analyses are developed.

  • Research Products

    (4 results)

All 2007 2006

All Journal Article (4 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Evidence for a metastable olivine wedge inside the subducted Mariana Slab2007

    • Author(s)
      Kaneshima, S., 他
    • Journal Title

      Earth and Planetary Science Letteres 258

      Pages: 219-227

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Evidence for a metastable olivine wedge inside the subducted Mariana slab.2007

    • Author(s)
      S. Kaneshima, T Okamoto, H. Takenaka.
    • Journal Title

      Earth and Planetary Science Letters 258

      Pages: 219-227

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Apparent migration of tremor sorce synchronized with the change in the tremor amplitude observed at Aso volcano, Japan2006

    • Author(s)
      Takagi, N., Kaneshima S., 他
    • Journal Title

      J. of Volcanology and Geothermal Research 154

      Pages: 181-200

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Apparent migration of tremor synchronized with the change in the tremor amplitude observed at Aso volcano, Japan2006

    • Author(s)
      N. Takagi, S. Kaneshima, et al.
    • Journal Title

      Journal of Volcanology and Geothermal Researches 154

      Pages: 181-200

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-06-09  

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