Collaborative research: RUI: Seismicity and 3-D velocity structure of Lo`ihi submarine volcano

合作研究：RUI：洛伊希海底火山的地震活动和 3-D 速度结构

• 批准号: 0851128
• 负责人: Jacqueline Caplan-Auerbach
• 金额: $ 19.35万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-12-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0851128&HistoricalAwards=false
• 关键词: Collaborative; research; RUI; Seismicity; velocity

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Lo`ihi is an active submarine volcano and the newest volcano in the Hawaiian Chain. As the only example of the submarine phase of Hawaiian volcanism, Lo`ihi represents an excellent opportunity to understand the evolution and activity of a young hot spot volcano. However, while a great deal has been learned about Lo`ihi's morphology, petrology, chemistry and microbiology, previous studies of Lo`ihi seismicity and internal structure have been hindered by poor data quality or a lack of instrumentation. Consequently, there is a major gap in our understanding of what has been described as one of the world?s best-studied submarine volcanoes. The primary goal of this project is to investigate earthquake activity and the internal structure of the undersea Lo`ihi volcano by installing a network of ocean bottom seismometers on the volcano to perform the first high resolution study of Lo`ihi's seismicity, including a detailed 2-D tomographic image of its internal structure. The project is a pilot study to learn more about Lo`ihi with the goal of eventually performing a combined active and passive source seismic study of the region to perform a full 3-D tomographic study of Lo`ihi and the surrounding area and image the connection between this submarine volcano and the Hawaiian plume ? a rising column of hot material that is thought to be the cause of volcanism in Hawaii. The broader impacts of this study focus on undergraduate research and education. Undergraduates will participate at all levels of the project, from serving as watchstanders on the cruises, to participating in data quality control, and analyzing data. As part of their research experience, the undergraduates will act as guest instructors in introductory geophysics courses, teaching their peers about seismic analysis. Their work will culminate in the presentation of their research at local or national conferences. Data from the project will also be used in introductory geophysics curricula at the lead institution. Two masters students and a postdoctoral fellow will also participate in the project. Also significant are the fact the Western Washington University is a principally undergraduate institution and that this project will support an early career female investigator.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。Lo 'ihi是一座活海底火山，也是夏威夷链中最新的火山。作为夏威夷火山作用海底阶段的唯一例子，Lo 'ihi代表了了解年轻热点火山演化和活动的绝佳机会。然而，虽然人们对洛伊希的形态学、岩石学、化学和微生物学有了大量的了解，但以前对洛伊希地震活动和内部结构的研究由于数据质量差或缺乏仪器而受到阻碍。因此，我们对所谓的世界之一的理解存在重大差距？最好的研究海底火山。该项目的主要目标是调查地震活动和海底Lo 'ihi火山的内部结构，方法是在该火山上安装海底地震仪网络，对Lo' ihi的地震活动进行首次高分辨率研究，包括对其内部结构进行详细的二维层析成像。该项目是一项试点研究，目的是更多地了解Lo 'ihi，最终对该地区进行主动和被动震源地震研究，对Lo' ihi及其周边地区进行全面的三维层析成像研究，并对这座海底火山与夏威夷羽流之间的联系进行成像。一个上升的热物质柱，被认为是夏威夷火山活动的原因。这项研究的更广泛的影响集中在本科研究和教育。本科生将参与该项目的各个层面，从担任游轮上的观察员，到参与数据质量控制和分析数据。作为他们研究经验的一部分，本科生将担任介绍性物理课程的客座讲师，教授他们的同龄人有关地震分析。他们的工作将最终在地方或全国会议上介绍他们的研究。该项目的数据还将用于牵头机构的地球物理学入门课程。两名硕士生和一名博士后研究员也将参与该项目。同样重要的是，西华盛顿大学主要是一所本科院校，该项目将支持一名早期职业女性调查员。