Development of a Low Gravity Simulator for Impact Phenomena

• Project/Area Number: 25610135
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Kobe University
• Principal Investigator: Arakawa Masahiko 神戸大学, 理学(系)研究科(研究院), 教授 (10222738)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 微小重力 / 衝突励起振動 / 貫入抵抗 / レゴリス層 / クレーター / 衝突実験 / 加速度計 / 粉粒体 / 加速度 / レゴリス / 天体衝突 / 応力伝播 / クレータースケール則 / 自由落下

Outline of Final Research Achievements

We studied the feasibility of development of a Low Gravity Simulator for Impact Phenomena (LoGSIP) in the laboratory; the LoGSIP would be used for the study on the physical properties of granular matters under the low gravity condition simulating a regolith layer of asteroid surface. Then, we developed the method to measure the dynamical resistance force generated from granular matters using the impactor equipped with an accelerometer, and more we developed the method to measure the impact vibration and the excavation process during the crater formation process using the accelerometers set on a target surface and a high speed photography. As a result of these developments, we obtained the basic dynamical properties of granular matters at 1G, and assessed the feasibility of the implementation of these methods to the LoGSIP.

Research Products

• [Journal Article] Compressional stress effect on thermal conductivity of powdered materials: Measurements and their implication to lunar regolith (2016)
  • Author(s): Nagoya Sakatani, Kazunori Ogawa, Yu-ichi Iijima, Masahiko Arakawa, Satoshi Tanaka
  • Journal Title: Icarus Volume: 267 Pages: 1-11
  • DOI: 10.1016/j.icarus.2015.12.012
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Ejecta velocity distribution of impact craters formed on quartz sand: Effect of projectile density on crater scaling law (2015)
  • Author(s): Tsujido, S., Arakawa, M., Suzuki, A. I., and Yasui, M.
  • Journal Title: Icarus Volume: 262 Pages: 79-92
  • DOI: 10.1016/j.icarus.2015.08.035
  • Peer Reviewed
• [Journal Article] Experimental study on impact-induced seismic wave propagation through granular materials (2015)
  • Author(s): Yasui, M., Matsumoto, E., and Arakawa, M.
  • Journal Title: Icarus Volume: 260 Pages: 320-331
  • DOI: 10.1016/j.icarus.2015.07.032
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Impacts experiments onto heterogeneous targets simulating impact breccia: Implications for impact strength of asteroids and formation of the asteroid families (2014)
  • Author(s): Leliwa-Kopystynski, J. and Arakawa, M.
  • Journal Title: Icarus Volume: 235 Pages: 147-155
  • DOI: 10.1016/j.icarus.2014.03.012
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Impact strength of small icy bodies that experienced multiple collisions (2014)
  • Author(s): Yasui, M., Hayama, R., and Arakawa, M.
  • Journal Title: Icarus Volume: 233 Pages: 293-305
  • DOI: 10.1016/j.icarus.2014.02.008
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High-Velocity Impact Phenomena in the Solar System Related to the Origin and Evolution of Planets (2014)
  • Author(s): 荒川政彦, 保井みなみ, 嶌生有理
  • Journal Title: The Review of High Pressure Science and Technology Volume: 24 Issue: 1 Pages: 13-20
  • DOI: 10.4131/jshpreview.24.13
  • NAID: 130003391930
  • ISSN: 0917-639X, 1348-1940
  • Peer Reviewed
• [Journal Article] A formation mechanism for concentric ridges in ejecta surrounding impact craters in a layer of fine glass beads (2013)
  • Author(s): Suzuki, A. I., Nakamura, A. M., Kadono, T., Wada, K., Yamamoto, S., & Arakawa, M.
  • Journal Title: Icarus Volume: 225 Issue: 1 Pages: 298-307
  • DOI: 10.1016/j.icarus.2013.03.027
  • Peer Reviewed
• [Journal Article] 火の鳥 「はやぶさ」 未来編 (その 3) SCI/DCAM3 と衝突の科学 (2013)
  • Author(s): 荒川 政彦, 和田浩二，はやぶさ２ SCI/DCAM3チーム
  • Journal Title: 遊・星・人: 日本惑星科学会誌 Volume: 22 Pages: 152-158
  • NAID: 110009660454
• [Presentation] Oblique impact experiments on porous gypsum and silica glass spheres simulating planetesimals (2016)
  • Author(s): Yasui, M., Yoshida, Y., Matsue, K., Takano, S., Arakawa, M., and Ogawa, K.
  • Organizer: MISASA VI “Frontiers in Earth and Planetary Materials Research: Origin, Evolution and Dynamics”
  • Place of Presentation: ブランアート三朝（鳥取県・東伯郡）
  • Year and Date: 2016-03-08
  • Int'l Joint Research
• [Presentation] 多孔質球の斜め衝突実験：衝突破壊強度に対する衝突角度依存性 (2015)
  • Author(s): 保井みなみ，松榮一真，荒川政彦，高野翔太
  • Organizer: 日本惑星科学会2015年度秋季講演会
  • Place of Presentation: 東京工業大学（東京都・目黒区）
  • Year and Date: 2015-10-14
• [Presentation] 密度の異なる弾丸を用いた高速度クレーター形成実験：衝突励起地震の弾丸物質依存性 (2015)
  • Author(s): 松榮一真，荒川政彦，保井みなみ，辻堂さやか，高野翔太，長谷川直
  • Organizer: 日本惑星科学会2015年度秋季講演会
  • Place of Presentation: 東京工業大学（東京都・目黒区）
  • Year and Date: 2015-10-14
• [Presentation] 氷・砂レゴリス層へのクレーター形成実験 (2015)
  • Author(s): 高野翔太，荒川政彦，保井みなみ，長谷川直
  • Organizer: 日本惑星科学会2015年度秋季講演会
  • Place of Presentation: 東京工業大学（東京都・目黒区）
  • Year and Date: 2015-10-14
• [Presentation] Experimental study on impact disruption of porous asteroids: Effects of oblique impact and multiple collisions on impact strength (2015)
  • Author(s): Yasui, M., Matsue, K., Takano, S., and Arakawa, M.
  • Organizer: IAU XXIX General Assembly
  • Place of Presentation: ハワイ（アメリカ合衆国）
  • Year and Date: 2015-08-03
  • Int'l Joint Research
• [Presentation] Experimental study on propagation process of impact-induced seismic wave in quartz sand simulating asteroid regolith layer (2015)
  • Author(s): Matsue, K., Arakawa, M., Yasui, M., Matsumoto, E., Tsujido, S., Takano, S., and Hasegawa, S.
  • Organizer: IAU XXIX General Assembly
  • Place of Presentation: ハワイ（アメリカ合衆国）
  • Year and Date: 2015-08-03
  • Int'l Joint Research
• [Presentation] 衝突クレーター形成に伴うイジェクタ速度分布に関する実験的研究 (2015)
  • Author(s): 辻堂さやか，荒川政彦，鈴木絢子，保井みなみ，松榮一真，高野翔太，長谷川直
  • Organizer: 日本地球惑星科学連合大会2015年大会
  • Place of Presentation: 幕張メッセ（千葉県・千葉市）
  • Year and Date: 2015-05-24
• [Presentation] 粘性流体へのクレーター形成実験：彗星核上のクレーターの形成及び緩和過程への応用 (2015)
  • Author(s): 阿部仁美，荒川政彦，保井みなみ
  • Organizer: 日本地球惑星科学連合大会2015年大会
  • Place of Presentation: 幕張メッセ（千葉県・千葉市）
  • Year and Date: 2015-05-24
• [Presentation] Experimental study on propagation process of impact-induced seismic wave in quartz sand simulating asteroid regolith layer (2015)
  • Author(s): Matsue, K., Arakawa, M., Yasui, M., Matsumoto, E., Tsujido, S., Takano, S., and Hasegawa, S.
  • Organizer: MISASA V “Comprehensive Exploration of the Solar System: Sample Return and Analysis”,
  • Place of Presentation: Tottori, Japan
  • Year and Date: 2015-03-06 – 2015-03-08
• [Presentation] 高速度域におけるクレーターエジェクタ速度のスケール則に関する実験的研究 (2014)
  • Author(s): 辻堂さやか，保井みなみ，荒川政彦，松榮一真，高野翔太，長谷川直
  • Organizer: 日本惑星科学会2014年秋季講演会
  • Place of Presentation: 東北大学片平キャンパスさくらホ－ル
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] 粉粒体を伝播する衝突励起地震に関する実験的研究Ⅱ (2014)
  • Author(s): 松榮一真，荒川政彦，保井みなみ，松本恵里，辻堂さやか，高野翔太，小林直樹，長谷川直
  • Organizer: 日本惑星科学会2014年秋季講演会
  • Place of Presentation: 東北大学片平キャンパスさくらホ－ル
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] Experimental study on the impact-induced seismic wave propagating through granular materials: Implications for a future asteroid mission (2014)
  • Author(s): Yasui, M., Matsumoto, E., Arakawa, M., Matsue, K., and Kobayashi, N.
  • Organizer: ACM2014
  • Place of Presentation: Helsinki, Finland
  • Year and Date: 2014-06-30 – 2014-07-04
• [Presentation] Experimental study on the ejecta-velocity distributions caused by low-velocity impacts on quartz sand (2014)
  • Author(s): Tsujido, S., Arakawa, M., Suzuki, A. I., and Yasui, M.
  • Organizer: ACM2014
  • Place of Presentation: Helsinki, Finland
  • Year and Date: 2014-06-30 – 2014-07-04
• [Presentation] Impact experiments onto heterogeneous targets and their interpretation in relation with formation of the asteroid families (2014)
  • Author(s): Leliwa-Kopystynski, J. and Arakawa, M.
  • Organizer: ACM2014
  • Place of Presentation: Helsinki, Finland
  • Year and Date: 2014-06-30 – 2014-07-04
• [Presentation] 粉流体を伝播する衝突励起地震に関する実験的研究 (2014)
  • Author(s): 松本恵里，保井みなみ，荒川政彦
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] 石英砂上への衝突クレーター形成実験：エジェクタの速度分布に対する弾丸密度依存性 (2014)
  • Author(s): 辻堂さやか，荒川政彦，和田浩二，鈴木絢子
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] 砂を伝播する衝突励起応力の減衰過程に関する実験的研究 (2014)
  • Author(s): 松榮一真，荒川政彦，保井みなみ
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] 砂への低速度衝突による衝突励起地震の観測 (2013)
  • Author(s): 松本 恵里, 荒川 政彦, 保井 みなみ, 小林 直樹
  • Organizer: 日本惑星科学会2013年度秋季講演会
  • Place of Presentation: 石垣市民会館
• [Presentation] 普通コンドライト母天体を形成した微惑星の低速度衝突実験：同サイズ試料の衝突破壊に対する斜め衝突の影響 (2013)
  • Author(s): 河本 泰成;荒川 政彦;保井 みなみ
  • Organizer: 日本惑星科学会2013年度秋季講演
  • Place of Presentation: 石垣市民会館
• [Presentation] 複数回衝突を受けた氷天体の衝突破壊強度に関する実験的研究 (2013)
  • Author(s): 羽山 遼, 荒川 政彦, 保井 みなみ
  • Organizer: 日本地球惑星科学連合2013年度連合大会
  • Place of Presentation: 千葉・幕張
• [Presentation] 雪・氷の二層構造標的上へのクレーター形成実験 (2013)
  • Author(s): 荒川 政彦;斉田 美香;保井 みなみ
  • Organizer: 日本地球惑星科学連合2013年度連合大会
  • Place of Presentation: 千葉・幕張
• [Presentation] Impact strength of small icy bodies experienced multiple collisions (2013)
  • Author(s): 荒川 政彦, 保井 みなみ, 羽山 遼
  • Organizer: 5th Subaru International Conference: Exoplanets and Disks: Their Formation and Diversity II
  • Place of Presentation: Sheraton Kona Resort and Spa at Keauhou Bay, Kailua-Kona, Hawai'i Island, USA
• [Presentation] Small Carry-on Impactor (SCI): Its Scientific Purpose, Operation, and Observation Plan in Hayabusa-2 Mission (2013)
  • Author(s): 荒川 政彦, 和田 浩二, 高木 靖彦, 門野 敏彦, 佐伯 孝尚, 澤田 弘崇, 小川 和律
  • Organizer: Asia Oceania Geosciences Society 10th Annual Meeting
  • Place of Presentation: Brisbane, Australia
  • Invited
• [Remarks] 実験惑星科学教育研究分野 神戸大学 大学院理学研究科 惑星学専攻
  • URL: http://epsl.sakura.ne.jp/EPSL-Kobe/Welcome.html
• [Remarks] 神戸大学大学院理学研究科惑星学専攻
  • URL: http://www.planet.sci.kobe-u.ac.jp/experiment/arakawa.html