EAGER: The Feasibility of Simulating of Weak Volcanic Shockwaves with Analog Modeling

关于火山口状况的信息可以从对大气冲击波的观测中提取。对产生冲击波的爆发现象以及对火山形状和喷发特性的依赖性的更好理解可能会导致新的方法来获取有关喷发强度的信息，以及产生气体/灰羽流扩散的浮力预测模型所需的初始条件。EaGER项目是一项为期一年的可行性研究，将研究使用独特的激波管装置进行火山爆炸的实验模拟。使用大气激波传播来测量爆炸威力和喷发温度是一项新的未经测试的技术。如果成功，大气冲击波传播有可能从根本上提高测量爆炸威力的准确性。在该项目结束时，我们预计能够最终解决有关激波管实验规模火山爆发的可行性的关切。所发展的理论将能够更精确地预测大气冲击波传播产生的爆炸威力。拟议的研究是跨学科的，代表了密歇根理工大学物理学和机械工程之间的新合作。它包括一个重要的机会，博士后研究员建立自己的职业生涯。该项目将处理一个高风险领域：用激波管实验测量火山喷发的可行性。

Information about conditions at a volcano vent can be extracted from observations of atmospheric shock waves. An improved understanding of the burst phenomena that generate shock waves and the dependence upon volcano shape and eruption properties may lead to new methods to access information on the eruption intensity as well as generate the initial conditions required in a buoyancy predictive models of the gas/ash plume dispersion. This EaGER project is a one-year feasibility study that will investigate experimental simulation of a volcanic explosion using a unique shock tube apparatus.Use of atmospheric shock propagation to gauge explosive power and eruption temperature is new and untested. If successful, atmospheric shock propagation has the potential to radically improve the accuracy of measuring explosive power. At the conclusion of the project we anticipate being able to definitively address concerns regarding the feasibility of a shock tube experiment to scale volcanic explosions. The theory developed will enable more precise prediction of explosive power derived from atmospheric shock wave propagation. The proposed research is interdisciplinary and represents a new collaboration between geophysics and mechanical engineering at Michigan Tech. It includes an important opportunity for the postdoctoral investigator to establish his career. The project will address an area of high risk: the feasibility of scaling volcanic eruption with a shock tube experiment.