RUI Collaborative Research: Paleoearthquake History of the Garlock Fault

RUI 合作研究：加洛克断层的古地震历史

• 批准号: 9706122
• 负责人: Thomas Rockwell
• 金额: $ 5.5万
• 依托单位: San Diego State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-15 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9706122&HistoricalAwards=false
• 关键词: RUI; Collaborative; Research; Paleoearthquake; History

9706122 Rockwell This research is to continue paleoseismic excavations at a site on the central Garlock fault in southern California that could potentially provide a longer record of prehistoric earthquakes than any site studied and published to date. A long record of prehistoric earthquakes is critical for determining the distribution of earthquake recurrence intervals along faults and for placing constraints on physical models of earthquake recurrence. In prior work, these scientists showed that the central Garlock fault has produced 5-8 large earthquakes in the past 5145 years, on average at intervals of 700-1230 years. The radiocarbon ages of earthquakes exposed in the initial trench indicate that the recurrence intervals for the central Garlock fault are irregular and that earthquakes may be clustered in time. This research will extend the earthquake record to 10-15 large earthquakes and better document the timing of all events. This research is a component of the National Earthquake Hazard Reduction Program. ***

小行星9706122 这项研究将继续在加州南部加洛克断层中心的一个遗址进行古地震挖掘，这可能会提供比迄今为止研究和出版的任何遗址更长的史前地震记录。 史前地震的长期记录对于确定地震复发间隔沿着断层的分布和对地震复发的物理模型施加约束是至关重要的。 在之前的工作中，这些科学家表明，在过去的5145年中，中央Garlock断层产生了5-8次大地震，平均间隔为700-1230年。 初始海沟中暴露的地震的放射性碳年龄表明，加洛克中央断层的复发间隔是不规则的，地震可能在时间上聚集。 这项研究将把地震记录扩展到10-15次大地震，并更好地记录所有事件的时间。 这项研究是国家地震减灾计划的一个组成部分。 ***