P17 月面上の2次クレーター解析による、衝突放出物のサイズ-速度分布の導出(ポスターセッション)

概要

論文の詳細を見る
Size-velocity distribution of ejecta by impact has been studied by laboratory experiments. However, it is unclear if the laboratory-scale results can be applied to the impact events on solar system bodies. On the other hand, size-velocity distribution of ejecta of lunar primary craters has been determined from the distribution of size and position of the secondary craters. We analyzed Clementine images of the lunar surface and distinguish the secondary craters from the primary ones by their ellipticity. Using these secondary craters, size and velocity of ejecta was determined by cratering scaling laws and we compared this data with the previous result of analysis of lunar surface and those of impact experiments.
日本惑星科学会の論文
2001-10-06