Use of Seismic Reflection to Confirm a Major Buried Fault System Beneath the Coastal Plain of South Carolina

利用地震反射确认南卡罗来纳州沿海平原下方的主要埋藏断层系统

• 批准号: 9508229
• 负责人: Pradeep Talwani
• 金额: $ 11.82万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9508229&HistoricalAwards=false
• 关键词: Use; Seismic; Reflection; Confirm; Major

9508229 TALWANI This research is to test the existence of a recently proposed 400-km-long, north northeast-trending fault system, which is postulated to extend through the Coastal Plain of the Carolinas and Virginia, by acquiring four 8- to 10-km-long high-resolution seismic reflection profiles across its trend in South Carolina. The objective of the profiling is to seek evidence of possible offsets in a basalt flow (about 600-800 m depth) Jurassic in age and in overlying sedimentary layers across its trend. A team from the University of Kansas will acquire and process the data. The proposed fault system is a candidate for the causal fault of the 1886 Charleston, S.C., earthquake. This research is a component of the National Earthquake Hazard Reduction Program. ***

TALWANI这项研究是为了测试最近提出的一个400公里长，北东北走向的断层系统的存在性，该断层系统假定延伸穿过卡罗莱纳州和弗吉尼亚州的沿海平原，通过获取4个8至10公里长的高分辨率地震反射剖面，穿过南卡罗来纳州的趋势。剖面的目的是寻找侏罗纪时代玄武岩流（约600-800米深）及其上覆沉积层中可能偏移的证据。来自堪萨斯大学的一个团队将获取并处理这些数据。所提出的断层系统是1886年南卡罗来纳州查尔斯顿地震的因果断层的候选。这项研究是国家减少地震危害计划的一个组成部分。* * *