Absolute Dating of Prehistoric Earthquakes by Tree-Ring Analysis in California

通过加州树木年轮分析确定史前地震的绝对年代

• 批准号: 9004350
• 负责人: Gordon Jacoby
• 金额: $ 18.01万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004350&HistoricalAwards=false
• 关键词: Absolute; Dating; Prehistoric; Earthquakes; Tree

This research is to carry out tree-ring studies that have been proven to yield information, absolute year dates and zones of rupture, for prehistoric earthquakes. The testing does not damage the trees. Paleoseismology is essential for establishing a long enough record of earthquakes to enable estimation of probabilities for future major earthquakes. The immediate future is likely to be similar to the most recent past. Coastal redwood trees or well-preserved stumps exist along several faults in northern California and some ages extend back over 600 years. The research will concentrate on two main project areas, the San Andreas fault north of San Francisco and the Little Salmon Creek fault zone at the southern end of the Cascadia Subduction Zone. This research is a component of the National Earthquake Hazard Reduction Program.

这项研究是为了进行树木年轮研究， 已被证明可以提供信息、绝对年份和 破裂，为史前地震。 测试不 破坏树木。 古地震学对于建立 足够长的地震记录， 未来大地震的可能性。 不久的将来 很可能与最近的历史相似 沿海红木 树木或保存完好的树桩存在沿着几个断层， 北方的加州和一些年龄可以追溯到600多年前。 研究将集中在两个主要项目领域， 弗朗西斯科北部的安德烈亚斯断层和小鲑鱼溪 卡斯卡迪亚俯冲带南端的断层带。 这项研究是国家地震灾害的一个组成部分 减少方案。