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

2010年2月27日发生在智利近海的8.8级地震是有记录以来第五大的巨型逆冲地震，为我们提供了一个前所未有的机会来促进我们对巨型逆冲地震及相关现象的理解。一个由60个便携式宽带地震台组成的阵列将被部署在余震区，作为一项为期约6个月的合作努力，包括来自佛罗里达大学、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/US阵列的设施，以收集开放的社区数据集。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和在断裂区安装地震和大地测量仪器的其他国际组织密切合作进行。在理解巨型逆冲断裂带下倾边缘的幕式地震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维。2010年智利地震提供了一个极好的机会，可以在孕震带、更深的幕式震动区以及下行和俯冲板块上方收集重要观测数据。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、海沟中的沉积物和大地震的历史)，可以为比较研究提供重要信息。一个充满活力的余震序列可能会持续数月。部署的目标是为大范围的科学项目为2010年智利地震产生一个开放的社区数据产品。社区范围的协调方法将提供最高质量的数据集，世界各地的各种私人投资机构和机构都可以立即利用这些数据。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。

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.