Basin-forming impacts: Reconnaissance modeling
Basin-forming impacts: Reconnaissance modeling
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DOI：
10.1130/2010.2465(03
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发表时间：
2010-01-01
期刊：
影响因子：
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通讯作者：
Pierazzo, E.
中科院分区：
文献类型：
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作者：
Ivanov, B. A.;Melosh, H. J.;Pierazzo, E.
这篇论文是关于一个项目的现状报告，该项目的重点是了解地球行星上大型撞击盆地的形成。一组初步的直径在150到800公里之间的小行星与月球、火星和水星碰撞的二维轴对称数值模型说明了行星尺度撞击的主要机械效应。目标体在规则网格上建模，空间分辨率为5-10公里。自重力包含在氢代码中。这种撞击的主要后果是在盆地中心形成一个很深的熔池。模型结果与已知的撞击盆地，如月球上的南极艾特肯和火星上的赫拉斯进行了初步比较。
This paper is a current status report on a project focused on understanding the formation of large impact basins on terrestrial planetary bodies. A set of preliminary two-dimensional axisymmetric numerical models of collisions of asteroids with diameters from 150 to 800 km with the Moon, Mars, and Mercury illustrates the main mechanical effects of planetary-scale impacts. The target body is modeled on a regular grid with a spatial resolution of 5-10 km. Self-gravity is included in the hydrocode. The main consequence of such an impact is a deep melt pool at the center of the basin. Model results are tentatively compared with known impact basins such as South Pole-Aitken on the Moon and Hellas on Mars.