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Sökning: onr:"swepub:oai:DiVA.org:ltu-90045" > Three-axial shape d...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00011512naa a2200889 4500
001oai:DiVA.org:ltu-90045
003SwePub
008220401s2022 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-900452 URI
0247 a https://doi.org/10.1016/j.icarus.2022.1150072 DOI
040 a (SwePub)ltu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Michikami, Tatsuhirou Faculty of Engineering, Kindai University, Hiroshima Campus, 1 Takaya Umenobe, Higashi-Hiroshima, Hiroshima 739-2116, Japan4 aut
2451 0a Three-axial shape distributions of pebbles, cobbles and boulders smaller than a few meters on asteroid Ryugu
264 1b Elsevier,c 2022
338 a print2 rdacarrier
500 a Validerad;2022;Nivå 2;2022-04-13 (joosat);Funder: Japan Society for the Promotion of Science (JSPS) KAKENHI (20K04048, 20H00194, 15H02146); Chinese Academy of Sciences President's International Fellowship Initiative (2019VCA0004); Hypervelocity Impact Facility, ISAS, JAXA
520 a Over a broad size range, the shapes of impact fragments from catastrophic disruptions are distributed around the mean axial ratio 2: √2: 1, irrespective of experimental conditions and target materials. Although most blocks on asteroids are likely to be impact fragments, there is not enough quantitative data for reliable statistics on their three-axial lengths and/or ratios because it is difficult to precisely estimate the heights of the blocks. In this study, we evaluate the heights of blocks on asteroid Ryugu by measuring their shadows. The three-axial ratios of ~4100 small blocks with diameters from 5.0 cm to 7.6 m in Ryugu's equatorial region are investigated using eight close-up images of narrower localities taken at altitudes below 500 m, i.e. at <5.4 cm/pixel resolution, obtained immediately before the second touch-down of the Hayabusa2 spacecraft. The purpose of this study is to investigate the block shape distribution, which is important for understanding the geological history of asteroid Ryugu. Specifically, the shape distribution is compared to laboratory impact fragments. Our observations indicate that the shape distributions of blocks smaller than 1 m on Ryugu are consistent with laboratory impact fragment shape distributions, implying that the dominant shape-determining process for blocks on Ryugu was impact fragmentation. Blocks several meters in size in the equatorial region seem to be slightly flatter than the rest, suggesting that some blocks are partly buried in a bed of regolith. In conclusion, the shape distributions of blocks from several-cm to several-m in the equatorial region of asteroid Ryugu suggest that these are mainly fragments originating from the catastrophic disruption of their parent body and/or from a later impact.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng
653 a Asteroids
653 a Surfaces
653 a Impact process
653 a Asteroid Ryugu
653 a Regolith
653 a Atmosfärsvetenskap
653 a Atmospheric science
7001 a Hagermann, Axelu Luleå tekniska universitet,Rymdteknik4 aut0 (Swepub:ltu)axehag
7001 a Morota, Tomokatsuu Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Yokota, Yasuhirou Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Urakawa, Seitarou Japan Spaceguard Association, Bisei Spaceguard Center 1716-3 Okura, Bisei, Ibara, Okayama 714-1411, Japan4 aut
7001 a Okamura, Hiroyukiu Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan4 aut
7001 a Tanabe, Naoyau Japan Aerospace Exploration Agency (JAXA), 7-44-1 Jindaiji Higashi-machi, Chofu-shi, Tokyo 182-8522, Japan4 aut
7001 a Yumoto, Kokiu Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Ebihara, Tatsukiu Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Cho, Yuichirou Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Ernst, Carolyn M.u The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, United States4 aut
7001 a Hayakawa, Masahikou Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Hirabayashi, Masatoshiu Department of Aerospace Engineering, Department of Geosciences, Auburn University, 211 Davis, Auburn, AL 36849, United States4 aut
7001 a Hirata, Naruu Graduate School of Computer Science and Engineering, University of Aizu, Tsuruga, Ikkimachi, Aizu Wakamatsu, Fukushima 965-8580, Japan4 aut
7001 a Honda, Chikatoshiu Graduate School of Computer Science and Engineering, University of Aizu, Tsuruga, Ikkimachi, Aizu Wakamatsu, Fukushima 965-8580, Japan4 aut
7001 a Honda, Rieu Department of Information Science, Kochi University, 2-5-1 Akebono-cho, Kochi, 780-8520, Japan4 aut
7001 a Kameda, Shingou Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan4 aut
7001 a Kanamaru, Masanoriu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Kikuchi, Hiroshiu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Kikuchi, Shotau Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan4 aut
7001 a Kouyama, Toruu Digital Architecture Research Center, National Institute of Advanced Industrial Science and Technology, 2-3-26, Aomi, Koto-ku, Tokyo 135-0064, Japan4 aut
7001 a Matsuoka, Moeu Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France4 aut
7001 a Miyamoto, Hideakiu Department of Systems Innovation, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan4 aut
7001 a Noguchi, Takaakiu Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University, Kitashirakawaoiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan4 aut
7001 a Noguchi, Rinau Faculty of Science, Niigata University, 8050 Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan; Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Ogawa, Kazunoriu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Okada, Tatsuakiu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Sakatani, Naoyau Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan4 aut
7001 a Sasaki, Shou Department of Earth and Space Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan4 aut
7001 a Sawada, Hirotakau Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Sugimoto, Chihou Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Suzuki, Hidehikou Department of Physics, Meiji University, Kawasaki, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan4 aut
7001 a Tanaka, Satoshiu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Tatsumi, Eriu Instituto de Astrofisica de Canarias, Calle Vía Láctea, s/n, 38205 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain; Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7001 a Tsuchiyama, Akirau Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan; CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), 511 Kehua Street, Wushan, Tianhe District, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China4 aut
7001 a Tsuda, Yuichiu Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Watanabe, Sei-ichirou Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan4 aut
7001 a Yamada, Manabuu Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan4 aut
7001 a Yoshikawa, Makotou Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan4 aut
7001 a Yoshioka, Kazuou Department of Complexity Science and Engineering, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan4 aut
7001 a Sugita, Seijiu Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan; Department of Complexity Science and Engineering, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan; Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan4 aut
7102 a Faculty of Engineering, Kindai University, Hiroshima Campus, 1 Takaya Umenobe, Higashi-Hiroshima, Hiroshima 739-2116, Japanb Rymdteknik4 org
7730 t Icarusd : Elsevierg 381q 381x 0019-1035x 1090-2643
8564 u https://doi.org/10.1016/j.icarus.2022.115007y Fulltext
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-90045
8564 8u https://doi.org/10.1016/j.icarus.2022.115007

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