Institute of Low Temperature Science, Hokkaido University
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第37回月・惑星シンポジウム
雑誌名(英)
Proceedings of the 37th ISAS Lunar and Planetary Symposium
ページ
25 - 28
発行年
2004-02
抄録（英）
Impact experiments on sintered snow were conducted at the impact velocities from 35 to 150 m/s. Snow and ice projectiles were launched into the snow target sintered at - 10 C for 15 minutes and at - 7 C for 45 minutes. The projectile and target porosity were about 32 and 36 percent respectively. The crater morphology depends on the projectile type and the degree of sintering of the target. The typical crater shape made by snow projectile is bowl shape with the depth to diameter ratio of about 0.5. The power law index of the impact velocity in the relationship between the projectile kinetic energy and the crater volume is about 1.5, which is rather smaller than 2.4 theoretically proposed by the scaling law in the strength regime.
Impact crater formed on sintered snow: Implication for the crater on comets
