@inproceedings{oai:jaxa.repo.nii.ac.jp:00020594, author = {濱野, 景子 and 阿部, 豊 and Hamano, Keiko and Abe, Yutaka}, book = {第37回月・惑星シンポジウム, Proceedings of the 37th ISAS Lunar and Planetary Symposium}, month = {Feb}, note = {Impact event vaporizes an impactor and target, and produces a silicate or mixed silicate-H2O vapor cloud. The vapor cloud can accelerate the planetary atmosphere to escape velocity and cause the loss of atmosphere. It is called impact erosion. Investigated was the impact erosion in ideal adiabatic atmosphere by computational means and compared the results with those obtained from a simple model proposed by Vickery and Melosh (1990). The strong shock is produced in the atmosphere and propagates vertically as predicted by Newman et al. (1999). On the other hand, horizontal flow blows the atmosphere away from the impact point. This flow pattern is not reported by any previous studies. Due to such a horizontal flow, the amount of the atmospheric loss is larger than that predicted by the simple model., 資料番号: AA0047898016}, pages = {61--64}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)}, title = {Numerical simulation of impact erosion: Comparison with a simple model}, year = {2004} }