Session Details
[P-PS03]Regolith Science
Sat. Jun 5, 2021 5:15 PM - 6:30 PM JST
Sat. Jun 5, 2021 8:15 AM - 9:30 AM UTC
Sat. Jun 5, 2021 8:15 AM - 9:30 AM UTC
Ch.02_1
convener:Koji Wada(Planetary Exploration Research Center, Chiba Institute of Technology), Akiko Nakamura(Graduate School of Science, Kobe University), Patrick Michel(Universite Cote D Azur Observatoire De La Cote D Azur CNRS Laboratoire Lagrange), John Kevin Walsh(Southwest Research Institute Boulder)
Recent planetary explorations have revealed that almost all solid bodies in the solar system are covered with small particles, called regolith. The surface geology, especially regolith behavior on the surfaces of solid bodies, becomes increasingly more important as represented by Hayabusa mission and other on-going and planned sample-return missions such as Hayabusa2, OSIRIS-REx, and MMX.For fully understanding the regolith science, it is required to know and compare the regolith conditions on various celestial bodies, from asteroids to planets, with various methods.
Therefore, this session welcomes broad topics related to regolith on various celestial bodies, such as asteroids, comets, the Moon, the martian moons, Mars, etc. Papers on the formation, evolution, and alteration processes of regolith particles and regolith systems on the surface of planetary bodies, remote and in-situ observational results and techniques, analyses and results of returned samples, and laboratory, numerical, and theoretical studies on the fundamental physical and chemical processes are all welcome.
Note that what we call regolith is not just fine grains: all kinds of materials (more or less loose) that lie on the surface, from cobbles to finer grains, are our targets.
[PPS03-P01]Disk-resolved photometric properties of local regions on asteroid 25143 Itokawa
*Naru Hirata1,2, Kohei Kitazato1,2, Eri Tatsumi3, Shota Katahira1, Takuma Furudate1, Hiroshi Kikuchi4, Hiroyuki Sato4 (1.Dep. of Computer Science and Engineering, Univ. of Aizu, 2.ARC-Space, Univ of Aizu, 3.Instituto de Astrofisica de Canarias, 4.Japan Aerospace Exploration Agency)
[PPS03-P02]Experimental study on impact ejecta velocity scaling law for regolith layer composed of weak boulders
*Yuya Yamamoto1, Masahiko Arakawa1, Minami Yasui1, Sunao Hasegawa2, Yusaku Yokota1, Hatsune Okawa1, Ryo Sugimura1 (1.Graduate School of Science, Kobe University, 2.institute of Space and Astronautical Science, JAXA)
[PPS03-P03]Particle size of Ryugu's subsurface layer inferred from observation of SCI crater’s ejecta curtain.
*Koji Wada1, Ko Ishibashi1, Hiroshi Kimura1, Masahiko Arakawa2, Hirotaka Sawada3, Kazunori Ogawa4,2, Kei Shirai2, Rie Honda5, Yuichi Iijima3, Toshihiko Kadono6, Naoya Sakatani7, Yuya Mimasu3, Tomoaki Toda3, Yuri Shimaki3, Satoru Nakazawa3, Hajime Hayakawa3, Takanao Saiki3, Yasuhiko Takagi8, Hiroshi Imamura3, Chisato Okamoto2, Masahiko Hayakawa3, Naru Hirata9, Hajime Yano3 (1.Planetary Exploration Research Center, Chiba Institute of Technology, 2.Department of Planetology, Kobe University, 3.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 4.JAXA Space Exploration Center, Japan Aerospace Exploration Agency, 5.Department of Science and Technology, Kochi University, 6.Department of Basic Sciences, University of Occupational and Environmental Health, 7.Department of Physics, Rikkyo University, 8.Aichi Toho University, 9.School of Computer Science and Engineering, The University of Aizu)
[PPS03-P04]Ryugu's surface change formed by SCI forward debris
*Yuri Shimaki1, Yasuhiro Yokota1, Rie Honda2, Masahiko Arakawa3, Koji Wada4, Toshihiko Kadono5, Kei Shirai3, Kazunori Ogawa6, Naoya Sakatani7, Ko Ishibashi4, Takanao saiki1, Hiroshi Imamura1, Satoru Nakazawa1, Masahiko Hayakawa1, Hajime Yano1, Yasuhiko Takagi8, Naru Hirata9, Hirotaka Sawada1, Seiji Sugita10, Tomokatsu Morota10, Shingo Kameda7, Eri Tatsumi11, Manabu Yamada4, Toru Kouyama12, Yuichiro Cho10, Moe Matsuoka1, Kazuo Yoshioka10, Hidehiko Suzuki13, Chikatoshi Honda9 (1.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 2.Kochi University, 3.Kobe University, 4.Planetary Exploration Research Center, Chiba Institute of Technology, 5.University of Occupational and Environmental Health, 6.JAXA Space Exploration Center, Japan Aerospace Exploration Agency, 7.Rikkyo University, 8.Aichi Toho University, 9.The University of Aizu, 10.The University of Tokyo, 11.Instituto de Astrofisica de Canarias, University of La Laguna, 12.National Institute of Advanced Industrial Science and Technology, 13.Meiji University)
[PPS03-P05]Static and impact strength of brittle regolith analogs
*Akiko Nakamura1, Sae Shigaki1 (1.Graduate School of Science, Kobe University)