Collaborative Research: A 3D seismic investigation of the transition to seismogenic behavior along the southern Costa Rica subduction zone

合作研究：对哥斯达黎加南部俯冲带向孕震行为转变的 3D 地震调查

• 批准号: 0851529
• 负责人: Eli Silver
• 金额: $ 34.24万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0851529&HistoricalAwards=false
• 关键词: Collaborative; Research; 3D; seismic; investigation

This award is funded under the American Recovery and Reinvestment Act of 2009(Public Law 111-5). The proposed work is to examine changes in structural and physical properties along the southern Costa Rica subduction zone using 3D seismic imaging. At this location the plate boundary transitions from stable sliding to unstable sliding. Understanding subduction zone processes is important for assessing geologic hazards such as earthquakes and tsunamis in these environments. In the proposed work, seismically imaged structures will be used to address several fundamental problems such as 1) the structure and nature of large sediment lenses that are being subducted; b) the effects of existing seafloor topography on subduction processes; c) the changes in plate boundary fault geometry along the trench; and d) the variations in the structure of the upper plate along the subduction zone. This work will support the education and training of graduate students. There is international collaboration with scientists from Spain, Germany and Costa Rica. There is also a component of industry support.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。拟议的工作是利用三维地震成像检查沿着南部哥斯达黎加俯冲带的结构和物理性质的变化。在这个位置，板块边界从稳定滑动过渡到不稳定滑动。 了解俯冲带过程对于评估这些环境中的地震和海啸等地质灾害非常重要。在拟议的工作中，地震成像结构将用于解决几个基本问题，例如：（1）正在俯冲的大型沉积物透镜体的结构和性质;（B）现有海底地形对俯冲过程的影响;（3）沿着海沟的板块边界断层几何形状的变化;（4）沿着俯冲带的上板块结构的变化。这项工作将支持研究生的教育和培训。 与来自西班牙、德国和哥斯达黎加的科学家进行了国际合作。 此外，还有产业支持的因素。