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.

在智利灾难性的8.8级地震之后，迫切需要记录余震并捕获短暂的数据，这将有助于评估该地区和其他地区的短期（即时）和长期地震风险。我们迫切需要沿着断裂带沿着的应变积累和孕震释放的可靠模型，以及改进的太平洋盆地海啸模型。美国团队已经在陆地上，另一个团队正准备在海上部署一套海底地震仪。2月27日的主震破坏了秘鲁-智利俯冲带的300公里长的部分，该俯冲带与南美洲接壤，造成地面位移高达7米。这次对主破裂区近海部分进行水深测量，并部署四个高度敏感的压力计记录垂直运动，将补充记录表面影响和海啸等可能的地震危险的努力。这项研究的主要广泛影响是其非常高和直接的社会相关性。