Collaborative Research: Collection of Open Data for Broadband Seismological Observations of Aftershocks of the February 27, 2010 Chilean Earthquake

合作研究：2010 年 2 月 27 日智利地震余震宽带地震观测开放数据收集

• 批准号: 1036349
• 负责人: Raymond Russo
• 金额: $ 0.8万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2011-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1036349&HistoricalAwards=false
• 关键词: Collaborative; Research; Collection; Open; Data

The magnitude 8.8 earthquake off the coast of Chile on February 27, 2010 is the fifth largest megathrust earthquake ever to be recorded and provides an unprecedented opportunity to advance our understanding of megathrust earthquakes and associated phenomena. An array of 60 portable, broadband seismic stations will be deployed in the aftershock zone for approximately six months as a collaborative effort, involving scientific leadership from academic institutions like the University of Florida, University of Arizona, and Rensselaer Polytechnic Institute, and the facilities of IRIS/PASSCAL/USArray, to collect an open community data set. The deployments and subsequent data collection and research will be carried out in close collaboration with the University of Chile in Santiago and other international groups installing seismic and geodetic instrumentation in the rupture area. Recent advances in understanding episodic tremors and slow slip events at the down-dip edge of megathrust rupture zones are reshaping our thinking about subduction zone dynamics. The 2010 Chile earthquake provides an excellent opportunity to collect important observations above the seismogenic zone, the deeper episodic tremor regions, and in the down-going and over-riding plates. This segment of the Chile subduction zone has similarities with Cascadia and Alaska (shallow dip, sediments in the trench, and history of great earthquakes) and can provide important information for comparative studies. An energetic aftershock sequence will likely to continue for many months. The goal of the deployment is to produce an open community data product for the 2010 Chile earthquake for a large range of science projects. A community-wide coordinated approach will provide the best quality data set that can be utilized immediately by a wide range of PIs and institutions around the world. This award is supported by THe Earth Sciences Division of the Geoscience Directorate and the Office of International Science and Engineering, Americas Program.

2010 年 2 月 27 日智利海岸发生的 8.8 级地震是有记录以来第五次最大的逆冲地震，为加深我们对逆冲地震及相关现象的了解提供了前所未有的机会。佛罗里达大学、亚利桑那大学和伦斯勒理工学院等学术机构的科学领导以及IRIS/PASSCAL/USArray，收集开放社区数据集。这些部署以及随后的数据收集和研究将与圣地亚哥的智利大学以及在破裂区域安装地震和大地测量仪器的其他国际组织密切合作进行。在理解巨型逆冲破裂带下倾边缘的阵发性震颤和慢滑事件方面的最新进展正在重塑我们对俯冲带动力学的思考。 2010 年智利地震提供了一个极好的机会来收集地震发生带、更深的阵发性震颤区域以及下行和上覆板块的重要观测结果。智利俯冲带的这一段与卡斯卡迪亚和阿拉斯加有相似之处（浅倾角、海沟沉积物和大地震历史），可以为比较研究提供重要信息。强烈的余震序列可能会持续数月。部署的目标是为 2010 年智利地震生成一个开放的社区数据产品，用于大型科学项目。全社区协调一致的方法将提供最优质的数据集，可供世界各地的众多 PI 和机构立即使用。该奖项由地球科学局地球科学部和国际科学与工程办公室美洲项目支持。