EAR-PF: Seismological Investigations of Volcanic Eruptive Plumes

EAR-PF：火山喷发羽流的地震学研究

• 批准号: 1144346
• 负责人: Ashley Shuler
• 金额: $ 8.5万
• 依托单位: Shuler Ashley E
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1144346&HistoricalAwards=false
• 关键词: EAR; PF; Seismological; Investigations; Volcanic

Dr. Ashley E. Shuler has been awarded an NSF Earth Science Postdoctoral Fellowship to carry out a research and education program at the University of California Santa Cruz. The project will explore the possibility of using seismology as remote sensing tool to estimate height of volcanic ash columns, by evaluating assumptions in the Prejean and Brodsky [2011] method, that relates seismic waves to maximum heights of ash columns. Dr. Shuler will investigate the source process(es) of co-eruptive seismic tremor and distinguish which eruptive processes are well-coupled to the ground and measurable using seismic waves. This study will determine whether 1 Hz seismic data can reliably be used to estimate plume heights for a variety of different eruption types. Seismology will also be used to calculate a previously unmeasurable quantity - the spectrum of flow velocities inside large-scale eruptive plumes. These results will constrain the turbulence structure of eruption columns.The results from this investigation may have direct applicability to mitigating hazards posed to the aviation industry by explosive volcanic eruptions. The use of 1 Hz data has the potential to revolutionize the use of commonly deployed seismic instruments and enable near real-time monitoring of remote volcanoes. This study will provide a multidisciplinary, collaborative education for the post-doctoral fellow and two undergraduate students linked to both the academic and volcano monitoring communities. An integral component of the proposed work is public education and outreach at Alaska Volcano Observatory, an institutional partner for this project.

阿什利医生。舒勒被授予美国国家科学基金会地球科学博士后奖学金，在加州大学圣克鲁斯开展研究和教育项目。该项目将探讨是否可能利用地震学作为遥感工具，通过评价Prejean和Brodsky [2011年]方法中将地震波与火山灰柱最大高度联系起来的假设，估计火山灰柱高度。Shelter博士将研究共同爆发的地震震颤的源过程，并区分哪些爆发过程与地面耦合良好，并使用地震波进行测量。这项研究将确定1赫兹地震数据是否可以可靠地用于估计各种不同喷发类型的羽流高度。地震学还将用于计算一个以前无法测量的量-大规模喷发羽流内的流速谱。这些结果将约束喷发柱的湍流结构，从这项调查的结果可能有直接的应用，以减轻爆炸性火山喷发对航空业造成的危害。1赫兹数据的使用有可能彻底改变通常部署的地震仪器的使用，并能够对偏远火山进行近实时监测。这项研究将为博士后研究员和两名与学术界和火山监测界有关的本科生提供多学科的协作教育。拟议工作的一个组成部分是在阿拉斯加火山观测站开展公共教育和外联活动，该观测站是该项目的一个机构伙伴。