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Geological processes under an extremely small gravity : Effects of seismic-shaking

Research Project

Project/Area Number 20684019
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

MIYAMOTO Hideaki  The University of Tokyo, 総合研究博物館, 准教授 (00312992)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2008: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords小惑星 / レゴリス / 惑星探査 / 粉体 / 数値シミュレーション / 衝突 / 衛星 / アトラス / 微小重力 / 粒子対流 / セルラーオートマトン
Research Abstract

Detailed geological study of close-up images obtained by Hayabusa spacecraft reveal that some of the gravels hold bright spot, which indicate the age of surface blocks is 1-10Ma. This supports our view that the surface gravel is migrating occasionally on the surface of the asteroid Itokawa. We developed a numerical simulation code of three-dimensional rock particles with irregular shapes and find that the gravels in the close-up images obtained by Hayabusa spacecraft are geometrically saturated and thus their size-frequency distributions should be carefully used to discuss the internal structure of Itokawa. Also, we newly develop a theoretical model of migrations of gravels including electro-statically levitated fine particles. Our theoretical model indicates that the smoothness of Saturnian satellite, Atlas, can be explained by dust levitations, which might be the dominant resurfacing process on the surface of this satellite. This indicates that dust levitation can be another important global-scale resurfacing under an extremely small gravity.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (45 results)

All 2011 2010 2009 2008 Other

All Journal Article (14 results) (of which Peer Reviewed: 6 results) Presentation (30 results) Remarks (1 results)

  • [Journal Article] An Inventory of Potentially Habitable Environments on Mars : Geological and Biological Perspectives2011

    • Author(s)
      Dohm, J.M., et al
    • Journal Title

      Special Edition of Geological Society of America

      Volume: (印刷中)(掲載確定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface morphological features of boulders on Asteroid 25143 Itokawa2010

    • Author(s)
      Noguchi T, Tsuchiyama A, Hirata N, Demura H, Nakamura R, Miyamoto H, Yano H, Nakamura T, Saito J, Sasaki S, HashimotoT, Kubota T, Ishiguro M,, Zolensky ME
    • Journal Title

      Icarus 206

      Pages: 319-326

    • Related Report
      2010 Final Research Report
  • [Journal Article] イトカワの岩塊表面に分布する高輝度スポット:年代決定に利用できるか2010

    • Author(s)
      竹内洋人, 宮本英昭, 丸山智志
    • Journal Title

      日本惑星科学会学会誌 19

      Pages: 23-27

    • NAID

      110007580876

    • Related Report
      2010 Final Research Report
  • [Journal Article] マイケル・E・ゾレンスキー,小惑星イトカワ表面に存在する岩塊の表面組織の解読~小惑星のフィールド岩石学の試み~2010

    • Author(s)
      野口高明, 平田成, 土'山明, 出村裕英, 中村良介, 宮本英昭, 矢野創, 中村智樹, 齋藤潤, 佐々木晶, 橋本樹明, 久保田孝, 石黒正晃
    • Journal Title

      日本惑星科学会学会誌 19

      Pages: 12-22

    • Related Report
      2010 Final Research Report
  • [Journal Article] The sedimentology and dynamics of crater-affiliated wind streaks in western Arabia Terra, Mars and Patagonia2010

    • Author(s)
      Rodriguez, JAP, Tanaka, K.L., Berman, D.C., Zimbelman, J.R, Kargel, J.S., Sasaki, S., Yan, J.G., Miyamoto, H.
    • Journal Title

      Argentina, Geomorphology 121

      Pages: 30-54

    • Related Report
      2010 Final Research Report
  • [Journal Article] The sedimentology and dynamics of crater-affiliated wind streaks in western Arabia Terra, Mars and Patagonia, Argentina2010

    • Author(s)
      Rodriguez, JAP, et al
    • Journal Title

      Geomorphology

      Volume: 121 Pages: 30-54

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface morphological features of boulders on Asteroid 25143 Itokawa2010

    • Author(s)
      Noguchi, T., et al
    • Journal Title

      Icarus

      Volume: 206 Pages: 319-326

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface morphological features of boulders on Asteroid 25143 Itokawa2010

    • Author(s)
      野口高明, 土山明, 平田成, 出村裕英, 中村良介, 宮本英明, 矢野創, 中村智樹, 齋藤潤, 佐々木晶, 橋本樹明, 久保田孝, 石黒正晃, マイケル・E・ゾレンスキー
    • Journal Title

      Icarus 206

      Pages: 319-326

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] イトカワの岩塊表面に分布する高輝度スポット:年代決定に利用できるか?2010

    • Author(s)
      竹内洋人, 宮本英昭, 丸山智志
    • Journal Title

      日本惑星科学会学会誌(遊星人) 19

      Pages: 23-27

    • NAID

      110007580876

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 小惑星イトカワ表面に存在する岩塊の表面組織の解読~小惑星のフィールド岩石学の試み~2010

    • Author(s)
      野口高明, 平田成, 土山明, 出村裕英, 中村良介, 宮本英明, 矢野創, 中村智樹, 齋藤潤, 佐々木晶, 橋本樹明, 久保田孝, 石黒正晃, マイケル・E・ゾレンスキー
    • Journal Title

      日本惑星科学会学会誌(遊星人) 19

      Pages: 12-22

    • NAID

      110007580875

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A survey of possible impact structures on 25143 Itokawa2009

    • Author(s)
      Hirata N, Barnouin-jha, O.S., Honda, C., Nakamura R., Miyamoto, H. Sasaki, S., Demura, H., nakamura, A.M., Michikami, T., Gaskell, R.W., Saito, J.
    • Journal Title

      Icarus 200

      Pages: 486-502

    • Related Report
      2010 Final Research Report
  • [Journal Article] Long-lived volcanism on the lunar farside revealed by SELENE terrain camera2009

    • Author(s)
      Haruyama, J., Ohtake, M., Matsunaga, T., Morota, T., Honda, C., Yokota, Y., Abe, M., Ogawa, Y., Miyamoto, Iwasaki, A., et al.
    • Journal Title

      Science 323

      Pages: 905-908

    • Related Report
      2010 Final Research Report
  • [Journal Article] Lack of exposed ice inside lunar south pole Shackleton Crater2008

    • Author(s)
      Haruyama, J., Ohtake, M., Matsunaga, T., Morota, T., Honda, C., Yokota, Y., Pieters, C.M., Hara, S., Hiroki, K., Saiki, K., Miyamoto, H., Iwasaki, A., et al.
    • Journal Title

      Science 322

      Pages: 938-939

    • Related Report
      2010 Final Research Report
  • [Journal Article] An Inventory of Potentially Habitable Environments on Mars : Geological and Biological Perspectives

    • Author(s)
      Dohm, J.M. Miyamoto, H., et al
    • Journal Title

      Special Edition of Geological Society of America 印刷中

    • Related Report
      2010 Final Research Report
  • [Presentation] 光化学反応によるイオの硫黄濃集機構2011

    • Author(s)
      平田直之、宮本英昭
    • Organizer
      日本惑星科学会2010年秋季講演会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2011-10-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] 衛星アトラスのクレーターと地表更新プロセス2011

    • Author(s)
      平田直之、宮本英昭
    • Organizer
      日本惑星科学会2010年秋季講演会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2011-10-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] 土星系の小型衛星アトラスの地形と進化2011

    • Author(s)
      平田直之、宮本英昭
    • Organizer
      月惑星科学シンポジウム
    • Place of Presentation
      宇宙科学研究本部 相模原キャンパス
    • Year and Date
      2011-08-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] 固体天体用地中レーダー(GPR)システムの検討と開発2011

    • Author(s)
      渡邊宏弥、宮本英昭、西堀俊幸
    • Organizer
      月惑星科学シンポジウム
    • Place of Presentation
      宇宙科学研究本部 相模原キャンパス
    • Year and Date
      2011-08-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] Unusual smoothness of the surface of a saturnianicy satellite2011

    • Author(s)
      Hirata, N., Miyamoto, H.
    • Organizer
      Atlas, Lunar and Planetary Science Conference
    • Place of Presentation
      米国・テキサス州
    • Year and Date
      2011-03-15
    • Related Report
      2010 Final Research Report
  • [Presentation] Unusual smoothness of the surface of a saturnian icy satellite, Atlas2011

    • Author(s)
      Hirata, N., Miyamoto, H.
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・テキサス州
    • Year and Date
      2011-03-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] 光化学反応によるイオの硫黄濃集機構2010

    • Author(s)
      平田直之、宮本英昭
    • Organizer
      日本惑星科学会2010年秋季講演会
    • Place of Presentation
      名古屋市
    • Year and Date
      2010-10-06
    • Related Report
      2010 Final Research Report
  • [Presentation] 土星系の小型衛星アトラスの地形と進化2010

    • Author(s)
      平田直之、宮本英昭
    • Organizer
      月惑星科学シンポジウム
    • Place of Presentation
      相模原市
    • Year and Date
      2010-08-05
    • Related Report
      2010 Final Research Report
  • [Presentation] 固体天体用地中レーダー(GPR)システムの検討と開発2010

    • Author(s)
      渡邊宏弥、宮本英昭、西堀俊幸
    • Organizer
      月惑星科学シンポジウム
    • Place of Presentation
      相模原市
    • Year and Date
      2010-08-05
    • Related Report
      2010 Final Research Report
  • [Presentation] イトカワにみられる岩塊の統計的解析:表層物質の逆分級2010

    • Author(s)
      丸山智志 宮本英昭 竹内洋人
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張
    • Year and Date
      2010-05-26
    • Related Report
      2010 Final Research Report
  • [Presentation] 小惑星イトカワ表面に存在する岩塊の表面組織の解読~小惑星のフィールド岩石学の試み~2010

    • Author(s)
      野口高明, ほか
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2010-05-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] イトカワにみられる岩塊の統計的解析:表層物質の逆分級2010

    • Author(s)
      丸山智志, 宮本英昭, 竹内洋人
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2010-05-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] Ancient structually-controlled basins as prime martian targets2010

    • Author(s)
      Dohm, M., et al
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・テキサス州
    • Year and Date
      2010-03-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Origins of Bright Spots on the Surface of Boulders Covering Asteroid Itokawa2010

    • Author(s)
      竹内洋人, 宮本英昭, 丸山智志
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・ウッドランド
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Evidence for Global-Scale Inverse Grading of Regolith Materials on Asteroid Itokawa2010

    • Author(s)
      丸山智志, 宮本英昭, 竹内洋人, 奥元良
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・ウッドランド
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Surface morphological features of boulders on Asteroid 25143 Itokawa2010

    • Author(s)
      Noguchi, Takaaki, Tsuchiyama, Akira, Hirata, Naru, Demura, Hirohide, Nakamura, Ryosuke, Miyamoto, Hideaki, Yano, Hajime, Nakamura, Tomoki, Saito, Jun, Sasaki, Sho, 4 coauthors
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・ウッドランド
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Origins of Bright Spots on the Surface of Boulders Covering Asteroid Itokawa2010

    • Author(s)
      Takeuchi, H., Miyamoto, H., Maruyama, S,
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国
    • Related Report
      2010 Final Research Report
  • [Presentation] Evidence for Global-Scale Inverse Grading of Regolith Materials on Asteroid Itokawa2010

    • Author(s)
      Maruyama, S., Miyamoto, H., Takeuchi, H.,Oku, M.,
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国
    • Related Report
      2010 Final Research Report
  • [Presentation] Surface morphological features of boulders on Asteroid 25143 Itokawa2010

    • Author(s)
      Noguchi, T., Tsuchiyama, A., Hirata, N., Demura, H., Nakamura, R., Mimoto, H., Yano, H., Nakamura, T., Saito, J., Sasaki, S.
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国
    • Related Report
      2010 Final Research Report
  • [Presentation] イトカワにみられる岩塊の統計的解析:表層物質の逆分級2009

    • Author(s)
      丸山智志, 宮本英昭, 竹内洋人
    • Organizer
      日本地球惑星科学連合連合大会
    • Place of Presentation
      千葉県
    • Year and Date
      2009-05-26
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] 小惑星イトカワの岩塊表面に見られる高輝度スポットの分布と形態的特徴2009

    • Author(s)
      丸山智志, 宮本英昭, 竹内洋人
    • Organizer
      日本地球惑星科学連合連合大会
    • Place of Presentation
      千葉県
    • Year and Date
      2009-05-26
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] Distributions and Morphological Characteristics of Bright Spots on Boulders Covering the Surface of Asteroid Itokawa2009

    • Author(s)
      Takeuchi, H., H. Miyamoto, M. Oku
    • Organizer
      Lunar and Planetary Science Conference
    • Place of Presentation
      米国・テキサス州
    • Year and Date
      2009-03-15
    • Related Report
      2010 Final Research Report 2008 Annual Research Report
  • [Presentation] イトカワの岩塊表面に見られる高輝度スポット:形成過程と岩塊の年代2009

    • Author(s)
      竹内洋人, 宮本英昭, 奥元良, 丸山智志
    • Organizer
      日本惑星科学会秋期講演会
    • Place of Presentation
      東京
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] イトカワの岩塊にみられる高輝度スポット:形態の分類と岩塊のサイズ分布2008

    • Author(s)
      竹内洋人、宮本英昭
    • Organizer
      日本惑星科学会秋期講演会
    • Place of Presentation
      博多
    • Year and Date
      2008-11-01
    • Related Report
      2010 Final Research Report
  • [Presentation] イトカワの岩塊にみられる高輝度スポット : 形態の分類と岩塊のサイズ分布2008

    • Author(s)
      竹内洋人、宮本英昭
    • Organizer
      日本惑星科学会秋期講演会
    • Place of Presentation
      博多
    • Year and Date
      2008-11-01
    • Related Report
      2008 Annual Research Report
  • [Presentation] 小惑星探査で何を知りたいか-レーダー探査への期待-2008

    • Author(s)
      春山純一、西堀俊幸、宮本英昭
    • Organizer
      シンポジウム「はやぶさ後継機にむけた太陽系小天体の科学」
    • Place of Presentation
      JAXA相模原キャンパス
    • Year and Date
      2008-08-28
    • Related Report
      2010 Final Research Report
  • [Presentation] 小天体の表層プロセスと内部探査の重要性2008

    • Author(s)
      宮本英昭
    • Organizer
      シンポジウム「はやぶさ後継機にむけた太陽系小天体の科学」
    • Place of Presentation
      JAXA相模原キャンパス
    • Year and Date
      2008-08-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Geologic processes on the surface of a small asteroid Itokawa2008

    • Author(s)
      Hirata, N., S.Abe, M.Ishiguro, K.Kitazato, R.Nakamura, H.Miyamoto,, H.Demura, M.Abe, S.Sasaki, S.
    • Organizer
      71st Annual meeting of Meteoritical Society
    • Place of Presentation
      松江
    • Year and Date
      2008-07-30
    • Related Report
      2010 Final Research Report
  • [Presentation] Geologic processes on the surface of a small asteroid Itokaw2008

    • Author(s)
      Hirata, N., S. Abe, M. Ishiguro, K. ki tazato, R. Nakam ura, H. Miyamoto, H. Demura , M. Abe, S. Sasaki, S.
    • Organizer
      71^<st> Annual meeting of Meteoritical Society
    • Place of Presentation
      松江
    • Year and Date
      2008-07-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] 高解像画像に見られるイトカワ上のbright dotの分布2008

    • Author(s)
      竹内洋人、宮本英昭
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      幕張
    • Year and Date
      2008-05-29
    • Related Report
      2010 Final Research Report 2008 Annual Research Report
  • [Remarks] ホームページ等

    • Related Report
      2010 Final Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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