Geophysics of cratering experiments: The laboratory perspective

陨石坑实验的地球物理学：实验室视角

• 批准号: 111493099
• 负责人: Professor Dr.-Ing. Christian Große
• 金额: --
• 依托单位: Centrum Baustoffe und Materialprüfung (cbm)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/111493099?language=en
• 关键词: Geophysics; cratering; experiments; laboratory; perspective

Experimental impact structures will be investigated using Non-Destructive Testing methods on the laboratory scale that are comparable to geophysical prospection methods. Techniques using ultrasound or electromagnetic waves can help to characterize the damage zone underneath the crater structure and determine its extent. The techniques have also the potential (together with modal analysis) to characterize petro-physical material properties or to determine the layers of a stratified target. These data are important for comparing the influence of different material (target) parameters on the formation of craters, crater substructures or damage zones. The experimentally gathered data will help further on to both verify and constrain numerical modeling results of crater formation, and to determine input parameters for the modeling. Field experiments at terrestrial crater structures (the Steinheim Basin, Germany, and Kamil crater, Egypt) using geophysical prospection methods are addressed in Proposal VIII. To transfer the results of the laboratory experiments to these large scale data, the non-destructive testing methods will play a central role. The results e.g. of ultrasound measurements can be compared with data obtained from reflection seismic profiles and microwave data with RADAR profiles done at Kamil. The link between the laboratory and the field experiments are again the numerical models that bring data together from different scales.

将使用与地球物理勘探方法相当的实验室规模的无损检测方法来研究实验冲击结构。使用超声波或电磁波的技术可以帮助表征弹坑结构下方的损伤区域并确定其范围。这些技术还有可能（与模态分析一起）表征石油物理材料特性或确定分层目标的层数。这些数据对于比较不同材料（目标）参数对弹坑、弹坑下部结构或损伤区域形成的影响非常重要。实验收集的数据将有助于进一步验证和约束陨石坑形成的数值模拟结果，并确定建模的输入参数。提案 VIII 提出了使用地球物理勘探方法在陆地陨石坑结构（德国斯坦海姆盆地和埃及卡米尔陨石坑）进行现场实验。为了将实验室实验的结果转化为这些大规模数据，无损检测方法将发挥核心作用。结果例如超声波测量的数据可以与从反射地震剖面获得的数据以及卡米尔雷达剖面的微波数据进行比较。实验室和现场实验之间的联系再次是将不同尺度的数据汇集在一起​​的数值模型。