Ejecta formation and crater development of the Mjølnir impact
Ejecta formation and crater development of the Mjølnir impact
复制标题
Mjølnir 撞击的喷射物形成和陨石坑的发展
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
H. Dypvik
中科院分区：
文献类型：
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作者：
V. Shuvalov;H. Dypvik
摘要-火山口-喷出物相关性是分析火山口形成及其对地质演化影响的重要因素。在这项研究中，无论是喷出物的分布和内部火山口的发展侏罗纪/白垩纪Mjølnir陨石坑（直径40公里，位于巴伦支海），通过数值模拟研究。模拟显示出高度不对称的喷出物分布，并强调喷出物分布的一层地表水的重要性。正如预期的那样，喷射物的不对称性随着撞击角度的减小而增加。模拟还显示了喷出物的不均匀空中分布。
Abstract— Crater‐ejecta correlation is an important element in the analysis of crater formation and its influence on the geological evolution. In this study, both the ejecta distribution and the internal crater development of the Jurassic/Cretaceous Mjølnir crater (40 km in diameter; located in the Barents Sea) are investigated through numerical simulations. The simulations show a highly asymmetrical ejecta distribution, and underscore the importance of a layer of surface water in ejecta distribution. As expected, the ejecta asymmetry increases as the angle of impact decreases. The simulation also displays an uneven aerial distribution of ejecta.