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Formation of large craters on the earth as a result of impacts of natural cosmic bodies

机译:自然宇宙天体的撞击导致地球上形成大型陨石坑

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The consequences of the impacts of cosmic bodies on the Earth's surface are analyzed. The conditions of large craters formation on the solid surface of the planet are calculated using the recently introduced technique. The α-β parametric plane is used to determine the bounds for the areas in which craters with radii greater than 100 m, 1 km, and 10 km can form, where α is the ballistic coefficient and β is the mass loss parameter. The relevant areas are located at limited values of the β parameter (for small but nonzero values of the α parameter), since a solid body evaporates intensely as it moves in the atmosphere if the β values are sufficiently large. Analysis of the ranges of the α and β variations can help in prediction of catastrophic consequences of entry of cosmic bodies into the Earth's atmosphere. The values of these parameters should be estimated before impacts with the Earth. The mass and velocity of a body entering the atmosphere seem to be the most difficult to determine a priori. However, precise astronomical observations together with the relevant software will make it possible to cope with this task.
机译:分析了宇宙物体撞击地球表面的后果。使用最新引入的技术可以计算出在地球固体表面形成大坑的条件。 α-β参数平面用于确定可以形成半径大于100 m,1 km和10 km的弹坑的区域的边界,其中α是弹道系数,β是质量损失参数。相关区域位于β参数的有限值处(对于α参数的较小但非零值),因为如果β值足够大,则固体会随着其在大气中的移动而强烈蒸发。对α和β变化范围的分析可以帮助预测宇宙物体进入地球大气所带来的灾难性后果。这些参数的值应在与地球碰撞之前进行估算。进入大气的物体的质量和速度似乎是最难确定的。但是,精确的天文观测以及相关软件将使其有可能应对这一任务。

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