Tensor Electromagnetic Profiling Across the San Andreas Fault

圣安德烈亚斯断层上的张量电磁剖面

• 批准号: 9316160
• 负责人: John Booker
• 金额: $ 13.04万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316160&HistoricalAwards=false
• 关键词: Tensor; Electromagnetic; Profiling; Across; San

9316160 Booker This is a project involving the collection of a continuous tensor electromagnetic profile (EMAP) across the San Andreas Fault in central California. The experiment has the potential to resolve targets of direct relevance to the earthquake process including high conductivity and presumably high pore pressure regions within the fault zone, resistive and hence impermeable membranes between the fault zone and the country rock and enhanced crustal conductivity below the brittle-ductile transition. However, detailed investigation of electrical structure within the fault zone at seismogenic depths is likely to require a controlled electromagnetic source deployed in conjunction with a deep drill hole. Detailed knowledge of the background electrical structure is a key requirement for design of such an experiment and providing this information is as important as the potential for direct insight from the EMAP data. ***

小行星9316160 这是一个涉及收集连续张量电磁剖面（EMAP）横跨圣安德烈亚斯断层在加州中部的项目。 该实验有可能解决与地震过程直接相关的目标，包括断层带内的高传导性和可能的高孔隙压力区域，断层带和围岩之间的电阻性和因此不渗透的膜，以及脆韧性过渡以下的增强地壳传导性。 然而，详细调查的电气结构内的断层带在孕震深度很可能需要一个受控的电磁源部署结合深钻孔。 背景电结构的详细知识是设计这样的实验的关键要求，并且提供该信息与从EMAP数据直接洞察的潜力一样重要。 ***