EAR-PF: Investigations of Ambient Seismic Noise

EAR-PF：环境地震噪声的研究

• 批准号: 0848132
• 负责人: Moira Pyle
• 金额: $ 16万
• 依托单位: Pyle Moira L
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0848132&HistoricalAwards=false
• 关键词: EAR; PF; Investigations; Ambient; Seismic

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Dr. Moira Pyle is awarded an NSF Earth Science Postdoctoral Fellowship to carry out a program of research and education at Saint Louis University. This project seeks to improve our understanding of the generation of ambient seismic noise and to explore new methods of utilizing seismic noise to study the interior of the earth. Crosscorrelation of noise between two arrays of seismic stations will be performed and array analysis techniques will be employed to investigate what coherent energy exists. Data will come from the permanent arrays of the International Monitoring System as well as available temporary array deployments. Different seasons as well as years will be examined to study the seasonal and temporal differences in noise generation. Seismic remote sensing of the interior of the earth typically uses waves generated by earthquakes or man made sources such as explosions, however, a method using surface wave information contained in ambient seismic noise has recently been developed to examine Earth structure. Evidence that the noise also contains body wave energy that has interacted with the deep earth provides an opportunity to use noise to examine even more of the earth. The ability to use noise to study a wide range of the earth will allow for far better global coverage because it can help reduce the limitations of location and timing of earthquake occurrence. The proposed study will provide an opportunity for an undergraduate student to participate in a research project and explore interest in geophysics while developing research skills extremely useful for further study. The principal investigator will gain valuable mentoring experience working with undergraduates as well as sharing the methods and related work from the project by contributing lectures to graduate geophysics courses. Simplified explanations of the ideas behind the project and basic seismology will be presented to visiting school groups.

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。莫伊拉·派尔被授予美国国家科学基金会地球科学博士后奖学金，在圣路易斯大学开展研究和教育项目。该项目旨在提高我们对环境地震噪声产生的理解，并探索利用地震噪声研究地球内部的新方法。将进行两个地震台站阵列之间的噪声互相关，并采用阵列分析技术来研究存在的相干能量。数据将来自国际监测系统的常设阵列以及现有的临时阵列部署。不同的季节和年份将会研究噪音产生的季节和时间差异。地球内部的地震遥感通常使用地震或爆炸等人为来源产生的波，然而，最近开发了一种利用环境地震噪声中包含的表面波信息来检查地球结构的方法。有证据表明，噪声也包含了与地球深处相互作用的体波能量，这为利用噪声来研究地球的更多部分提供了机会。利用噪声来研究大范围地球的能力将使全球覆盖范围大大扩大，因为它可以帮助减少地震发生地点和时间的限制。本研究将为本科生提供一个参与研究项目的机会，探索地球物理学的兴趣，同时培养对进一步研究非常有用的研究技能。首席研究员将获得宝贵的指导经验，与本科生一起工作，并通过为研究生地球物理学课程提供讲座，分享项目的方法和相关工作。项目背后的理念和基本地震学的简化解释将呈现给来访的学校团体。