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The forensics of fulgurite formation

机译:富抗石形成的质量

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Abstract Natural disasters such as forest fires can result in extensive and costly property damage. These events may be the result of a human error or system failure triggered by electrical discharge, and in such circumstances may form a fulgurite. Understanding fulgurites and their formation may be critical in determining the cause of the fire or other, shock-related event. Here we identify several distinguishing features of fulgurites formed in association with downed power lines, including the presence of melted conductors, transformation of quartz to cristobalite, and morphological differences including increased glass percentage and smaller internal voids. These features are consequences of how heat is transferred to and through a target rock material as it melts and forms a fulgurite, and are predicted from both first principles of diffusive heat transfer, and empirically-derived reaction kinetics for mineral transformations.
机译:摘要自然灾害,如森林火灾可能会导致丰富昂贵的财产损失。 这些事件可以是通过放电触发的人为误差或系统故障的结果,并且在这种情况下可以形成富峰。 了解富棱镜及其形成对于确定火灾或其他冲击相关事件的原因可能是至关重要的。 在这里,我们识别与倒下的电力线相关联的富峰石的几个区别特征,包括熔化导体的存在,将石英转化为ristobalite,以及包括增加的玻璃百分比和更小的内部空隙的形态差异。 这些特征是在熔化和形成富抗体时如何通过靶岩材料转移到目标岩材料的后果,并且从衍射传热的第一个原理预测,以及用于矿物转化的经验衍生的反应动力学。

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