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Quantitative modeling of the inner magnetospheric environment using data assimilation

Research Project

Project/Area Number 19740306
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Space and upper atmospheric physics
Research InstitutionThe Institute of Statistical Mathematics

Principal Investigator

NAKANO Shin'ya  The Institute of Statistical Mathematics, モデリング研究系, 助教 (40378576)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,950,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords地球惑星磁気圏・磁気嵐 / リングカレント / データ同化 / 磁気嵐 / リングウレント
Research Abstract

We have developed a data assimilation technique for incorporating in-situ data of the ring current plasma obtained by multiple spacecraft into a kinetic numerical simulation model. Under the conditions that the spacecraft are sufficiently distributed, general features in the distributions of plasma and electric potential are well reconstructed. We have also developed a data assimilation technique for modeling the plasmasphere using ultra-violet imaging data.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (33 results)

All 2009 2008 2007 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (23 results)

  • [Journal Article] Estimation of a long-term variation of a magnetic- storm index using the merging particle filter2009

    • Author(s)
      S. Nakano, T. Higuchi
    • Journal Title

      IEICE Transactions on Information and Systems v.E92-D

      Pages: 1382-1387

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of a long-term variation of a magnetic- storm index using the merging particle filter2009

    • Author(s)
      S.Nakano, T.Higuchi
    • Journal Title

      IEICE Transactions on Information and Systems E92-D

      Pages: 1382-1387

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of the solar-wind dynamic pressure on the Region-2 field-aligned currents2009

    • Author(s)
      S. Nakano, G. Ueno, S. Ohtani, and T. Hiauchi
    • Journal Title

      Journal of Geophysical Research 114

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A method for estimating the ring current structure and the electric potential distribution using ENA data assimilation2008

    • Author(s)
      S. Nakano, G. Ueno, Y. Ebihara, M. -C. Fok, S. Ohtani, P.C. Brandt, D.G. Mitchell, K. Keika, T. Higuchi
    • Journal Title

      Journal of Geophysical Research v.113

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] A method for estimating the ring current structure and the electric potential distribution using ENA data assimilation2008

    • Author(s)
      S. Nakano, et.al.
    • Journal Title

      Journal of Geophysical Research 113

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ENA Occultation : New remote sensing technique to study the lunar exosphere2008

    • Author(s)
      Y. Futaana, S. Nakano, M. Wieser, and S. Barabash
    • Journal Title

      Journal of Geophysical Research 113

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Merging particle filterとその特性2008

    • Author(s)
      中野慎也, 上野玄太, 中村和幸, 樋口知之
    • Journal Title

      統計数理 56

      Pages: 225-234

    • NAID

      120006019017

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Merging particle filter for sequential data assimilation2007

    • Author(s)
      S. Nakano, G. Ueno, T. Higuchi
    • Journal Title

      Nonlinear Processes in Geophysics v.14

      Pages: 395-408

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Merging particle filter for sequential data assimilation2007

    • Author(s)
      S. Nakano
    • Journal Title

      Nonlinear Processes in Geophysics 14

      Pages: 395-395

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A method for estimating the ring current structure and the electric potential distribution using ENA data assimilation

    • Author(s)
      S. Nakano
    • Journal Title

      Journal of Geophysical Research (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] データ同化の考え方とその方法2009

    • Author(s)
      中野慎也
    • Organizer
      MTI研究会
    • Place of Presentation
      京都市
    • Year and Date
      2009-12-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] Merging particle filter for high-dimensional nonlinear problems2009

    • Author(s)
      S.Nakano, G.Ueno, T.Higuchi
    • Organizer
      The 5th WMO symposium on data assimilation
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2009-10-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Feasibility of EUV data assimilation for the modeling of the plasmasphere2009

    • Author(s)
      中野慎也, M.-C.Fok, P.C.Brandt, 樋口知之
    • Organizer
      第126回 地球電磁気・地球惑星圏学会講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2009-09-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] Merging particle filter による状態推定-宇宙科学への応用-2009

    • Author(s)
      中野慎也, 他
    • Organizer
      2009年度 統計関連学会連合大会
    • Place of Presentation
      同志社大学(京田辺市)
    • Year and Date
      2009-09-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Development of an EUV data assimilation technique for plasmasphere modeling2009

    • Author(s)
      S.Nakano, M.-C.Fok, P.C.Brandt, T.Higuchi
    • Organizer
      IAGA 2009 Scientific Assembly
    • Place of Presentation
      Sopron, Hungary
    • Year and Date
      2009-08-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] Statistical analysis of influence of the solar-wind pressure enhancement on the Region-2 field-aligned currents2009

    • Author(s)
      S.Nakano, G.Ueno, S.Ohtani, T.Higuchi
    • Organizer
      IAGA 2009 Scientific Assembly
    • Place of Presentation
      Sopron, Hungary
    • Year and Date
      2009-08-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] データ同化による磁気圏プラズマ分布の推定2009

    • Author(s)
      中野慎也, 他
    • Organizer
      第58回理論応用力学講演会
    • Place of Presentation
      東京都港区
    • Year and Date
      2009-06-09
    • Related Report
      2009 Annual Research Report
  • [Presentation] Long-term component of the variation of the Dst index2009

    • Author(s)
      中野慎也, 樋口知之
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      千葉市
    • Year and Date
      2009-05-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] A data assimilation method for plasmasphere modeling using EUV imaging data2009

    • Author(s)
      S. Nakano, M. -C. Fok, P.C. Brandt, T. Higuchi
    • Organizer
      AGU 2009 Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Monthly-scale variation of the Dst index and its relationship with solar-wind conditions2009

    • Author(s)
      S. Nakano, T. Higuchi
    • Organizer
      IAGA 2009 Scientific Assembly
    • Place of Presentation
      Sopron, Hungary
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Effects of the solar-wind dynamic pressure on the Region-2 field-aligned current intensity2008

    • Author(s)
      S. Nakano, G. Ueno, S. Ohtani, and T. Higuchi
    • Organizer
      AGU2008 Fall Meeting
    • Place of Presentation
      米国・サンフランシスコ
    • Year and Date
      2008-12-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] Data assimilation approach and its applications to the modeling of the dynamics in the magnetosphere2008

    • Author(s)
      S. Nakano
    • Organizer
      International Symposium : Fifty Years after IGY - Modern Information Technologies and Earth and Solar Sciences-
    • Place of Presentation
      つくば市
    • Year and Date
      2008-11-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Relationship between the Region-2 current intensity and the solar-wind dynamic pressure2008

    • Author(s)
      中野慎也, 上野玄太, 大谷晋一, 樋口知之
    • Organizer
      第124回地球電磁気・地球惑星圏学会講演会
    • Place of Presentation
      仙台市
    • Year and Date
      2008-10-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] A feasibility study of ring current modeling using data assimilation of multi-satellite observations2008

    • Author(s)
      S. Nakano, G. Ueno, Y. Ebihara, M.-C. Fok, and T. Higuchi
    • Organizer
      AOGS 5th Annual General Meeting
    • Place of Presentation
      韓国・釜山
    • Year and Date
      2008-06-17
    • Related Report
      2008 Annual Research Report
  • [Presentation] データ同化による磁気圏リングカレント発達過程のモデリング2008

    • Author(s)
      中野慎也, 他
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      千葉市
    • Year and Date
      2008-05-29
    • Related Report
      2008 Annual Research Report
  • [Presentation] Feasibility of data assimilation of multi-satellite measurements for ring current modeling2008

    • Author(s)
      中野慎也, 上野玄太, 海化原祐輔,M.-C. Fok, 樋口知之
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      千葉市
    • Year and Date
      2008-05-29
    • Related Report
      2008 Annual Research Report
  • [Presentation] Data assimilation of energetic neutral atom data for two-dimensional modeling of the maanetospheric rina current2008

    • Author(s)
      S. Nakano, et.al.
    • Organizer
      EGU General Assembly 2008
    • Place of Presentation
      オーストリア・ウィーン
    • Year and Date
      2008-04-18
    • Related Report
      2008 Annual Research Report
  • [Presentation] A feasibility study of ring current modeling using data assimilation of multi-satellite observations2008

    • Author(s)
      S. Nakano, G. Ueno, Y. Ebihara, M. -C. Fok, T. Higuchi
    • Organizer
      AOGS 5th Annual General Meeting, Busan
    • Place of Presentation
      the Republic of Korea
    • Related Report
      2009 Final Research Report
  • [Presentation] Variations in the ring current and inner-magnetospheric electric field deduced from data assimilation of IMAGE/HENA data2007

    • Author(s)
      S. Nakano
    • Organizer
      AGU 2007 Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2007-12-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] Data assimilation approach for estimating unknown factors in akinetic ring current model2007

    • Author(s)
      中野 慎也
    • Organizer
      第122回 地球電磁気・地球惑星圏学会講演会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2007-09-30
    • Related Report
      2007 Annual Research Report
  • [Presentation] Ring current modeling with an algorithm based on the particle filter/smoother2007

    • Author(s)
      S. Nakano
    • Organizer
      24th IUGG General Assembly
    • Place of Presentation
      Perugia, Italy
    • Year and Date
      2007-07-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] Quantitative modeling of the ring current using ENA data assimilation2007

    • Author(s)
      S. Nakano
    • Organizer
      24th IUGG General Assembly
    • Place of Presentation
      Perugia, Italy
    • Year and Date
      2007-07-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] Relationship between the ring current structure and the electric potential distribution in the inner-magnetosphere deduced from data assimilation2007

    • Author(s)
      中野 慎也
    • Organizer
      日本地球惑星科学連合2007年大会
    • Place of Presentation
      千葉・幕張メッセ
    • Year and Date
      2007-05-24
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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