Estimates of crater size for large-body impact: Gravity-scaling results
Estimates of crater size for large-body impact: Gravity-scaling results
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大型天体撞击坑大小的估计：重力缩放结果
DOI：
10.1130/spe190-p93
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
K. Holsapple
中科院分区：
文献类型：
--
作者：
R. Schmidt;K. Holsapple
基于量纲不变性的标度分析与离心机实验相结合，用于估计千米大小的撞击器的撞击效率作为撞击速度的函数。补充早期，传统的小规模冲击实验，离心机实验进行，以证实这些比例规律在比例大小的感兴趣的制度。这项技术提供了经验尺度定律，用于估计撞击地球的大型天体的陨石坑大小。根据这些比例定律，一个直径10公里的天体以25公里/秒的速度撞击地球，预计将产生一个直径66公里的陨石坑，并将其质量的12倍左右注入大气层。
A scaling analysis based upon dimensional invariance is used in conjunction with centrifuge experiments to estimate cratering efficiency as a function of impact velocity for kilometer-sized impactors. Complementing earlier, conventional small-scale impact experiments, centrifuge experiments were performed to substantiate these scaling laws in a scaled-size regime of interest. This technique provided empirical scaling laws used to estimate crater size for large bodies impacting the earth. From these scaling laws a 10-km-diameter body impacting at 25 km/s would be expected to produce a 66-km-diameter crater and to inject approximately 12 times its mass into the atmosphere.