A Study of Continental Margins Amphibious Seismometry

大陆边缘两栖地震测量研究

• 批准号: 1154795
• 负责人: Spahr Webb
• 金额: $ 10.96万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-05-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1154795&HistoricalAwards=false
• 关键词: Study; Continental; Margins; Amphibious; Seismometry

Among the aims of the Cascadia Initiative is a comprehensive study of earthquake seismicity and risk along the coast of the northwestern U.S. ? Washington, Oregon and northern California ? where there is considerable risk of great earthquakes and tsunamis. A major goal of this research program is to provide guidance for long-term planning and hazard mitigation base on a better understanding of earthquake seismicity in the region. A major component of this program is the deployment of an array of Ocean Bottom Seismographs (OBSs). Many of these insruments will be located in shallow waters near the coast, where they will be affected by sources of noise such as waves and currents that are as yet poorly understood. The goal of this study is to obtain a good understanding of the dependence of seismic noise on OBSs location and depth to aid planning future OBS deployments and to improve methods of mitigating noise sources. The chief broader impact of this project lies in its essential contribution to planning shallow-water OBS deployments in the Cascadia Initiative and elsewhere.

卡斯卡迪亚倡议的目标之一是对美国西北部沿海地区的地震活动性和风险进行全面研究？华盛顿州、俄勒冈州和北加州？发生大地震和海啸的风险相当大的地方。该研究计划的主要目标是在更好地了解该地区地震活动的基础上，为长期规划和减灾提供指导。该计划的一个主要组成部分是部署一系列海底地震仪（OBS）。其中许多仪器将位于海岸附近的浅水区，在那里它们会受到波浪和洋流等噪音源的影响，而这些噪音源目前仍知之甚少。本研究的目的是更好地了解地震噪声对 OBS 位置和深度的依赖性，以帮助规划未来的 OBS 部署并改进减轻噪声源的方法。该项目最广泛的影响在于它对规划卡斯卡迪亚倡议和其他地方的浅水 OBS 部署做出了重要贡献。