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Investigation and modelling of large scale cratering events : Lessons learnt from experimental analysis

机译：大规模陨石坑事件的调查和建模：从实验分析中学到的教训

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Initiated as part of the 2010 Spin Your Thesis campaign, a new ESA Education programme, a group from the University of Glasgow Space Advanced Research Team successfully conducted a series of impact cratering experiments under a highly accelerated reference frame. This aimed to: reproduce and define the physical conditions of large-scale cratering events onto highly porous asteroids; provide cratering response data for the validation and advancement of numerical models; and support the generation of a reliable scaling theory for cratering events. Impact cratering is a fundamental process that has shaped and continues to shape the formation and evolution of our solar system and other planetary systems. Although much is known on the impact dynamics of rocky, brittle bodies, such as asteroids, little is known on the physical response of highly porous bodies. Consequently the physical response of porous bodies can not be compared to conventional models. Therefore throughout the experiment campaign, variation into the target material’s porosity and projectile density was examined. All in-situ measurements were recorded relative to the crater’s morphological profile and ejecta distribution. This occurred under increasing levels of acceleration, thereby validating that the experiment occurred within the crater dominated gravity regime. This paper details the programmatics issues of the initiative, experiences and lessons learnt from the student perspective. From its initial proof-of-concept the Spin Your Thesis campaign provided a solid foundation from the development of an experimental idea, enabling high scientific return and personal development.
机译：格拉斯哥大学太空高级研究团队的一个新的ESA教育计划是2010年“旋转您的论文”运动的一部分，在高度加速的参考框架下成功进行了一系列撞击坑试验。目的是：在高度多孔的小行星上复制并确定大规模陨石坑事件的物理条件；提供缩孔反应数据，以验证和推进数值模型；并支持为陨石坑事件生成可靠的缩放理论。撞击坑是一个基本过程，已经塑造并继续塑造着我们的太阳系和其他行星系统的形成和演化。尽管对岩石，脆性物体（如小行星）的撞击动力学知之甚少，但对高度多孔的物体的物理响应知之甚少。因此，多孔体的物理响应无法与传统模型进行比较。因此，在整个实验过程中，要检查目标材料的孔隙率和弹丸密度的变化。记录了所有相对于陨石坑的形态轮廓和喷射分布的原位测量结果。这是在加速度增加的情况下发生的，从而验证了实验是在火山口主导的重力范围内进行的。本文详细介绍了该计划的程序设计问题，从学生的角度汲取的经验教训。从最初的概念验证起，“旋转您的论文”活动就为实验构想的发展奠定了坚实的基础，从而实现了很高的科学回报和个人发展。

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