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Independent component analysis of Australian-wide-array geomagnetic data

Research Project

Project/Area Number 23403004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Solid earth and planetary physics
Research InstitutionTohoku University

Principal Investigator

ICHIKI Masahiro  東北大学, 理学(系)研究科(研究院), 助教 (80359182)

Co-Investigator(Kenkyū-buntansha) SUGA Toshio  東北大学, 大学院・理学研究科, 教授 (70211977)
FUJITA Kiyoshi  大阪大学, 大学院・工学研究科, 教授 (00283862)
Project Period (FY) 2011-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords海洋ダイナモ / 電気伝導度構造 / 地磁気変動 / 独立成分分析 / 潮流 / 電気伝導度 / 海洋潮汐 / 潮 流
Research Abstract

Employed the Australian-wide geomagnetic array data, we investigated the mechanism of the outstanding power spectrum density of geomagnetic variation corresponding to M2 tide observed at Alice Springs, central Australia, and estimated 3-D electrical conductivity profile in the uppermantle beneath entire Australian continent after elimination of the tidal effect. A distribution of the large geomagnetic power spectrum density corresponding to M2 tide is consistent with the land surface conductivity distribution rather than periodic current distribution. The upper mantle conductivity model beneath Australian continent clearly revealed the geological terrains, in particular Yilgarn and Pilbara Cratons.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (19 results)

All 2014 2013 2012 2011 Other

All Journal Article (4 results) (of which Peer Reviewed: 3 results) Presentation (12 results) (of which Invited: 1 results) Book (3 results)

  • [Journal Article] A 3-D conductivity model of the Australi an continent using observatory and magn etometer array data2014

    • Author(s)
      Liejun, W., A. Hitchman, Y. Ogawa, W. Siripunvaraporn, M. Ichiki and K. Fuji-ta
    • Journal Title

      Geophysical Journal International

      Volume: (Accepted)

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Long-term variations of surface and inter mediate waters in the southern Indian Oc ean along 32°S2012

    • Author(s)
      Kobayashi, T., K. Mizuno and T. Suga
    • Journal Title

      J. Oceanogr

      Volume: 68 Issue: 2 Pages: 243-265

    • DOI

      10.1007/s10872-011-0093-5

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Long-term variations of Subantarctic Mode Water at 32°S in the Indian Ocean2011

    • Author(s)
      Kobayashi, T., K. Mizuno and T. Suga
    • Journal Title

      Proceedings of the OceanObs '09

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
  • [Journal Article] Variations in electrical conductivity of rocks above metamorphic conditions2011

    • Author(s)
      藤田清士、桂智男、市來雅啓、松崎琢也、小林記之
    • Journal Title

      Tectonophysics

      Volume: 504 Issue: 1-4 Pages: 116-121

    • DOI

      10.1016/j.tecto.2011.03.008

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] 北太平洋におけるサブダクション率と低渦位水分布の関係2013

    • Author(s)
      柴田優, 須賀利雄, 遠山勝也
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2013-09-18
    • Related Report
      2013 Annual Research Report 2013 Final Research Report
  • [Presentation] Annual subduction rate of the North Pacific and its interannal variation2013

    • Author(s)
      Suga, T., K. Toyama and A. Iwasaki
    • Organizer
      WCRP/CLIVAR 2nd International Symposium on Boundary Current Dynamics
    • Place of Presentation
      中国麗江
    • Year and Date
      2013-07-09
    • Related Report
      2013 Final Research Report
  • [Presentation] Argo フロートにより観測された北西太平洋における中規模渦の時間発展2013

    • Author(s)
      伊藤大樹, 須賀利雄
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Final Research Report
  • [Presentation] Argoフロートにより観測された北西太平洋における中規模渦の時間発展2013

    • Author(s)
      伊藤大樹, 須賀利雄
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] A reference electrical conductivity model of continental upper mantle estimated from MT data in central Australia2012

    • Author(s)
      Ichiki, M., K. Fuji-ta, L. Wang, J. Whatman, and Adrian Hitchman
    • Organizer
      The 21st Electromagnetic Induction Workshop
    • Place of Presentation
      豪州ダーウィン
    • Year and Date
      2012-07-30
    • Related Report
      2013 Final Research Report
  • [Presentation] Electrical Conductivity Network Model for Hydrous Rock and Mineral2012

    • Author(s)
      K. Fuji-ta, M. Seki, T. Katsura, and M. Ichiki
    • Organizer
      The 21st Electromagnetic Induction Workshop
    • Place of Presentation
      豪州ダーウィン
    • Year and Date
      2012-07-30
    • Related Report
      2013 Final Research Report
  • [Presentation] Long-term variations of surface and intermediate waters in the southern Indian Ocean along 32°S2012

    • Author(s)
      Kobayashi, T., K. Mizuno, and T. Suga
    • Organizer
      Ocean Science Meeting
    • Place of Presentation
      米国ソルトレークシティー
    • Year and Date
      2012-02-20
    • Related Report
      2013 Final Research Report 2011 Annual Research Report
  • [Presentation] An upper mantle electrical conductivity profile beneath the Australian continent and a comparison with a laboratory-based model2011

    • Author(s)
      Ichiki, M., K Fuji-ta, L. Wang, J. Whatman and A. Hitchman
    • Organizer
      IUGG General Assembly
    • Place of Presentation
      豪州メルボルン
    • Year and Date
      2011-07-04
    • Related Report
      2013 Final Research Report 2011 Annual Research Report
  • [Presentation] An electrical conductivity network model within the hydrous rock and mineral2011

    • Author(s)
      Fuji-ta, K., M. Seki, T. Katsura, and M. Ichiki
    • Organizer
      IUGG General Assembly
    • Place of Presentation
      豪州メルボルン
    • Year and Date
      2011-07-02
    • Related Report
      2013 Final Research Report 2011 Annual Research Report
  • [Presentation] Annual subduction rate of the North Pacific and its interannal variation

    • Author(s)
      Suga, T., K. Toyama and A. Iwasaki
    • Organizer
      WCRP/CLIVAR 2nd International Symposium on Boundary Current Dynamics
    • Place of Presentation
      麗江(中国)
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] A reference electrical conductivity model of continental upper mantle estimated from MT data in central Australia

    • Author(s)
      Masahiro Ichiki, Kiyoshi Fuji-ta, Liejun Wang, James Whatman and Adrian Hitchman
    • Organizer
      The 21st Electromagnetic Induction Workshop
    • Place of Presentation
      オーストラリア、ダーウィン、ホリデイインホテル
    • Related Report
      2012 Annual Research Report
  • [Presentation] Electrical Conductivity Network Model for Hydrous Rock and Mineral

    • Author(s)
      Kiyoshi Fuji-ta, Masayuki Seki, Tomoo Katsura, and Masahiro Ichiki
    • Organizer
      The 21st Electromagnetic Induction Workshop
    • Place of Presentation
      オーストラリア、ダーウィン、ホリデイインホテル
    • Related Report
      2012 Annual Research Report
  • [Book] 表層循環系, 図説地球環境の事典 7.4 節(吉崎正憲・野田彰 他編)2013

    • Author(s)
      須賀利雄
    • Publisher
      朝倉書店
    • Related Report
      2013 Final Research Report
  • [Book] 北太平洋モード水, 図説地球環境の事典 7.13 節, (吉崎正憲・野田彰他編)2013

    • Author(s)
      須賀利雄
    • Publisher
      朝倉書店
    • Related Report
      2013 Final Research Report
  • [Book] 海水はめぐる, 海はめぐる-人と生命を支える海の科学- 第3章, 日本海洋学会編2012

    • Author(s)
      須賀利雄
    • Publisher
      地人書館
    • Related Report
      2013 Final Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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