Crustal and Mantle Structure Beneath the Central California Margin: A Teleseismic Study

加州中部边缘下方的地壳和地幔结构：一项远震研究

• 批准号: 9004177
• 负责人: George Thompson
• 金额: $ 5万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004177&HistoricalAwards=false
• 关键词: Crustal; Mantle; Structure; Beneath; Central

This research is to study the crust and upper mantle beneath central California using a new and independent teleseismic data set collected in the region by Pacific Gas and Electric Co. First, the receiver function technique will be used to study the orientation and possible imbrication of the oceanic crust beneath the continental margin in addition to looking for variations in crustal thickness along the margin. Second, the data set will be merged with that of the USGS to do a 3-D seismic travel time residual study of the crust and mantle beneath the margin. Understanding the tectonic history is essential for better understanding and characterization of the potential seismic hazards present today. This research is a component of the National Earthquake Hazard Reduction Program.

这项研究是利用太平洋天然气和电力公司在该地区收集的一组新的独立远程地震数据来研究加州中部以下的地壳和上地幔。首先，除了寻找大陆边缘地壳厚度的变化外，还将使用接收函数技术来研究大陆边缘以下洋壳的定向和可能的叠加作用。其次，该数据集将与美国地质勘探局的数据集合并，以进行边缘之下地壳和地幔的三维地震走时剩余研究。了解构造历史对于更好地理解和描述当今存在的潜在地震灾害至关重要。这项研究是国家减少地震灾害计划的一部分。