Collaborative Research: Comprehensive Geochemical Sampling and Multicomponent Thermochemical Equilibria of Volcanic Emissions

该项目旨在对活火山的火山排放物进行全面的实地采样和测量，以便继续进行研究。这将涉及在今后两年内在两到三个实地地点继续进行多种方法的实地抽样和测量工作。新的数据和样本将使用新的热化学模型进行分析和解释，这些模型现在涉及40多种成分和500多种物种；这些模型构成了理解排放产物，特别是气体从深处上升、冷却并在地球大气中氧化时发生的众多化学反应的基础。PIS将使用一种新的现场测量技术-拉曼光谱，该技术可以测量许多不同物种的发射率。基于空气污染监测的经验，新的拉曼技术可以实时同时测量两个或更多物种；这可能被证明对喷发预测有用。这项工作将增加关于火山排放的不足的数据库，允许更准确地衡量小喷发现象，有助于指导火山作用对大气化学影响的模型，并可能提供对某些类型矿藏的更好了解。这是密歇根技术大学的威廉·罗斯和俄勒冈大学的马克·里德合作的项目。

This project is for continued studies directed at comprehensive field sampling and measurement of volcanic emission products at active volcanoes. It will involve continued multi-method field sampling and measurement efforts at two or three field sites in the next two years. The new data and samples will be analyzed and interpreted using new thermochemical models which now address more than 40 components and over 500 species; these models form the basis for understanding the multitude of chemical reactions which happen when emission products, especially gases, ascend from depth, cool and oxidize in the earth's atmosphere. The PIs will use a new field measurement technique, Raman spectroscopy, which can measure emission rates of many different species. Based on experience in air pollution monitoring, the new Raman technique can measure two or more species contemporaneously in real time; this may prove to be useful for eruption forecasting. This work will add to the inadequate data base on volcanic emissions, allow for more accurate scaling of phenomena of small eruptions, help guide models of the impact of volcanism on atmospheric chemistry and possibly provide a better understanding of some kinds of ore deposits. This is a collaborative project between William Rose of Michigan Technical University and Mark Reed of the University of Oregon.