Mount Erebus Volcano Observatory

9419267凯尔和阿斯特 摘要 该奖项支持埃里伯斯火山火山观测站的延续。 主要目标是继续全年监测埃里伯斯山的火山活动，利用7个地震台站组成的网络，并在夏季进行气体监测。地震活动将提供一个火山喷发行为和动力学的理解。幽冥鬼 未来，地震数据的反演可能会对火山内部的岩浆库和管道进行断层成像。 在南方夏季，基于实地的观测将包括测量二氧化硫（SO2）和痕量气体和金属的排放率。 这些数据将用于评估Erebus气体排放对东南极冰盖雪化学的潜在影响。 F，Cl，SO2和金属的排放率的短期变化将被检查，以推断供应熔岩湖的岩浆房中的挥发分带。 一个单独的计划，放射性测年使用高精度40 Ar/39 Ar方法将与这项工作相协调，以确定火山的地质演化，并检查火山的斜长石响岩熔岩的喷发速率。幽冥鬼

9419267 Kyle and Aster Abstract This award supports continuation of the Mount Erebus Volcano Observatory. The principal objectives are to continue year-round surveillance of the volcanic activity of Mount Erebus, using a network of 7 seismic stations and gas monitoring during summer months. The seismicity will provide an understanding of the eruptive behavior and dynamics of Mt. Erebus. Inversion of the seismic data in future may allow tomographic imaging of the magma chamber and plumbing inside the volcano. During the austral summer months, field based observations will include measuring emission rates of sulfur dioxide (SO2) and trace gases and metals. These data will be used to evaluate the potential impact of gas emission from Erebus on the snow chemistry on the East Antarctic Ice Sheet. Short term variations in the emission rates of F, Cl, SO2 and metals will be examined to infer volatile zoning in the magma chamber supplying the lava lake. A separate program of radiometric dating using the high precision 40Ar/39Ar method will be coordinated with this work to determine the geological evolution of the volcano and to examine eruption rates of anorthoclase phonolite lavas from Mt. Erebus.