[E] 口頭発表
セッション記号 P (宇宙惑星科学) » P-CG 宇宙惑星科学複合領域・一般
コンビーナ:奥地 拓生(岡山大学惑星物質研究所)、関根 利守(Center for High Pressure Science and Technology Advanced Research)、富岡 尚敬(海洋研究開発機構高知コア研究所)
Impact phenomena have been recognized to play essential roles in the processes of planetary evolution. Recent progresses in nanoscale analysis of meteorites, asteroid explorations, as well as laboratory experiments for simulating shock dynamics on planetary materials are collaboratively revealing complex effects of shock-induced processes in planetary evolution. Recently, several new metastable high-pressure phases have been identified in strongly shocked meteorites. Their occurrences indicate that the shock-induced physical states are far from thermodynamic equilibrium and contain very complicated processes. On the other hand, laboratory experiments including laser-driven shock techniques have recently been making remarkable progresses. They successfully simulate a variety of fast non-equilibrium processes at transient high-pressure conditions reaching tens to a few hundreds of gigapascals, that uniquely affect the physical and chemical properties of planetary materials upon impacts. Here we discuss how planetary materials are compressed, fractured, transformed, melted, and quenched during impact events by referring these recent studies. We welcome presentations from interdisciplinary research fields related to shock responses of planetary materials.
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*Sean R Shieh1、Giancarlo Jones1、Desmond E Moser1、Robert J Clarsson1 (1.University of Western Ontario)
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*Jinping Hu1、Paul D. Asimow1 (1.Division of Geological and Planetary Sciences, California Institute of Technology)
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*Youjun Zhang1、Jun Li2、Toshimori Sekine3 (1.Sichuan University, China、2.Institute of Fluid Physics, China、3.Center for High Pressure Science and Technology Advanced Research, China)
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*Liang Sun1、Xiaoxi Duan1、Liping Peng1、Yulong Li1、Youjun Zhang2、Toshimori Sekine3、Zhebin Wang1、Jiamin Yang1、Shaoen Jiang1 (1.Laser Fusion Research Center, China Academy of Engineering Physics (CAEP), Mianyang,621900,P. R. China、2.Sichuan University, Chengdu, P.R. China、3.Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, 201203, P. R. China. )
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*宮西 宏併1、犬伏 雄一1,2、籔内 俊毅1,2、末田 敬一1、富樫 格1,2、尾崎 典雅3、Koenig Michel4、丹下 慶範2、登野 健介1,2、矢橋 牧名1,2 (1.理化学研究所放射光科学研究センター、2.高輝度光科学研究センター、3.大阪大学、4.LULI, CNRS, CEA, Ecole Polytechnique, UPMC, Univ Paris 06)
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Discussion (17:25 〜 17:30)