RAPID: Chilean Earthquake Rupture Survey

RAPID：智利地震破裂调查

• 批准号: 1035121
• 负责人: C. David Chadwell
• 金额: $ 19.12万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 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: 2010-04-01 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1035121&HistoricalAwards=false
• 关键词: RAPID; Chilean; Earthquake; Rupture; Survey

In the aftermath of the catastrophic M8.8 earthquake in Chile there is an urgent need to record aftershocks and capture ephemeral data that will help to assess both short term (immediate) and long term earthquake risk in the region and elsewhere. Reliable models of strain accumulation and seismogenic release along the fault zone, and improved tsunami models for the Pacific basin, are urgently needed. U.S. teams are already on the ground onshore, and another team is preparing to deploy a suite of ocean bottom seismometers offshore. The February 27th mainshock ruptured a 300 km long segment of the Peru-Chile subduction zone that borders South America, causing ground displacements of as much as 7 meters. This bathymetric survey of the offshore portion of the main rupture zone and the deployment of four highly sensitive pressure gauges to record vertical motions will complement efforts to document the surface effects and possible earthquake hazards, such as tsunamis. The principal broader impact of this study is its very high and immediate societal relevance.

智利发生 M8.8 灾难性地震后，迫切需要记录余震并捕获短暂数据，这将有助于评估该地区和其他地方的短期（即时）和长期地震风险。迫切需要沿断裂带建立可靠的应变积累和震源释放模型，以及改进的太平洋盆地海啸模型。美国团队已经在陆地上部署，另一个团队正准备在海上部署一套海底地震仪。 2月27日的主震使与南美洲接壤的秘鲁-智利俯冲带300公里长的一段破裂，造成地面位移高达7米。对主要破裂带近海部分的水深测量以及部署四个高灵敏度压力计来记录垂直运动将补充记录地表效应和可能的地震危险（例如海啸）的工作。这项研究的主要更广泛影响是其非常高且直接的社会相关性。