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2006 Fiscal Year Final Research Report Summary

Experimental study on elastic anistropy of mantle minerals

Research Project

Project/Area Number 15204042
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionOKAYAMA UNIVERSITY

Principal Investigator

YONEDA Akira  OKAYAMA UNIVERSITY, Institute for Study of the Earth's Interior, Associate Professor, 地球物質科学研究センター, 助教授 (10262841)

Co-Investigator(Kenkyū-buntansha) SUZUKI Isao  OKAYAMA UNIVERSITY, Faculty of Science, Professor, 大学院自然科学研究科, 教授 (60033198)
ODA Hitoshi  OKAYAMA UNIVERSITY, Faculty of Science, Professor, 大学院自然科学研究科, 教授 (50127552)
URAKAWA Satoru  OKAYAMA UNIVERSITY, Faculty of Science, Associate Professor, 大学院自然科学研究科, 教授 (30201958)
KATSURA Tomoo  OKAYAMA UNIVERSITY, Institute for Study of the Earth's Interior, Associate Professor, 地球物質科学研究センター, 助教授 (40260666)
Project Period (FY) 2003 – 2006
Keywordscrystal elasticity / resonant ultrasound spectroscopy / seismological anisotropy / large volume pressure generation / optical polishing / crystallographic orientation
Research Abstract

In this fiscal year, I was concentrated on crystallographic orientation measurement and shaping of micro crystal (~500μm or less) of high pressure phases. I introduced a CCD camera to determine X ray position against the small specimen. This system works well even for other projects. Then, I examined appropriate way to shape small specimen, such as treating a grain in water to prevent the specimen flown away.
I am preparing a sphere specimen of hydrous β spinal with 3wt% water. This crystal was synthesized by Dr. Anton in this institute, and the water content was determined by Dr. Shinoda at Osaka City University by using FTIR method. The crystal structure of hydrous β spinal is monoclinic. Thus to avoid numerical analysis difficulty, I am considering to make a sphere for the final shape of the specimen by applying the air-round method frequently used in crystallography. This project will be the first example of resonant ultrasound spectroscopy to measure single crystal elasticity of high pressure phases.
Furthermore, we made important progress on data analysis of resonant peaks. With utilizing the specialty of lock-in amplifier detecting signal phase shift against reference input, we tried to peak fitting simultaneously on real and imaginary parts. We confirmed the resolution ability of the new algorithm by examining our own data at around 20-30 MHz successfully. We submitted the result, combined with the hardware progress of high frequency resonant ultrasonic spectroscopy, to Review of Scientific Instruments.

  • Research Products

    (12 results)

All 2006

All Journal Article (12 results)

  • [Journal Article] Simultaneous determination of mean pressure and deviatoric stress based on numerical tensor analysis : Case study for polycrystalline X-ray diffraction of gold enclosed in a methanol-ethanol mixture2006

    • Author(s)
      A.Yoneda
    • Journal Title

      J. Physics : Condensed Matter 18

      Pages: S979-S994

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] P-V-T equation of state of Mg_2SiO_4 perovskite and MgO periclase : Implication for lower mantle composition2006

    • Author(s)
      Y.Aizawa
    • Journal Title

      Phys. Earth Planet. Int. 155

      Pages: 87-95

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Origin of seismic anisotropy in the D" layer inferred from shear deformation experiments on post-perovskite phase2006

    • Author(s)
      D.Yamazaki
    • Journal Title

      Earth Planet. Sci. Lett. 252

      Pages: 372-378

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hydrous olivine unable to account for conductivity anomaly at the top of the asthenosphere2006

    • Author(s)
      T.Yoshino
    • Journal Title

      Nature 443

      Pages: 973-976

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Equation of state of (Mg_<0.8>, Fe_<0.2>)_2SiO_4 ringwoodite from synchrotron X-ray diffraction up to 20 GPa and 1700K2006

    • Author(s)
      M.Matsui
    • Journal Title

      Eur. J. Mineral. 18

      Pages: 523-528

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Electrical conductivity of FeTiO_3 ilmenite at high temperature and high pressure2006

    • Author(s)
      B.Zhang
    • Journal Title

      Phys. Rev. B : Condens. Matter 73

      Pages: 134104

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Simultaneous determination of mean pressure and deviatoric stress based on numerical tensor analysis : Case study for polycrystalline X-ray diffraction of gold enclosed in a methanol-ethanol mixture.2006

    • Author(s)
      A.Yoneda
    • Journal Title

      J Physics : Condensed Matter 18

      Pages: S979-S994

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] P-V-T equation of state of Mg_2SiO_4 perovskite and Mg0 periclase : Implication for lower mantle composition.2006

    • Author(s)
      Y.Aizawa
    • Journal Title

      Phys.Earth Planet.Int. 155

      Pages: 87-95

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Origin of seismic anisotropy in the D" layer inferred from shear deformation experiments on post-perovskite phase.2006

    • Author(s)
      D.Yamazaki
    • Journal Title

      Earth Planet.Sci.Lett 252

      Pages: 372-378

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Hydrous olivine unable to account for conductivity anomaly at the top of the asthenosphere.2006

    • Author(s)
      T.Yoshino
    • Journal Title

      Nature 443

      Pages: 973-976

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Equation of state of (Mg_<0.8>, Fe_<0.2>)_2SiO_4 ringwoodite from synchrotron X-ray diffraction up to 20 GPa and 1700K.2006

    • Author(s)
      M.Matsui
    • Journal Title

      Eur.J.Mineral 18

      Pages: 523-528

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electrical conductivity of FeTiO_3 ilmenite at high temperature and high pressure.2006

    • Author(s)
      B.Zhang
    • Journal Title

      Phys.Rev.B : Condens.Matter 73

      Pages: 134104

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

URL: 

Published: 2008-05-27  

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