Collaborative Research: Holocene Seismicity of the Cascadia Subduction Zone Based on Precise Dating of the Turbidite Event Record

合作研究：基于浊积岩事件记录精确测年的卡斯卡迪亚俯冲带全新世地震活动

• 批准号: 0001023
• 负责人: Chris Goldfinger
• 金额: $ 8.42万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001023&HistoricalAwards=false
• 关键词: Collaborative; Research; Holocene; Seismicity; Cascadia

0001023 Goldfinger0001074 Nelson Several models of earthquake characteristics such as the seismic gap hypothesis, repetition rate, clustering and other slip-predictable or time-predictable models remain poorly tested because of the lack of a long enough historical earthquake record. This research continues work on the turbidite history along the Cascadia convergent margin where submarine channels along the margin have recorded Holocene history of regional submarine slides probably triggered solely by great earthquakes. Cores will be dated and correlated across the area to test the hypothesis that these are recording the history of large subduction-related earthquakes. If verified, the turbidite event-based paleoseismicity record is expected to provide a long enough record so that current seismic hypotheses can be more adequately tested.

纳尔逊由于缺乏足够长的历史地震记录，地震空区假说、重复率、成簇和其他滑动预测或时间预测模型等几种地震特征模型仍然没有得到很好的检验。 这项研究继续工作的浊流历史沿着卡斯卡迪亚收敛边缘的海底通道沿着边缘记录全新世历史的区域海底滑坡可能引发的大地震。 将对整个地区的岩芯进行年代测定和相关性分析，以检验这些岩芯记录了与俯冲有关的大地震历史的假设。 如果得到证实，浊积岩事件为基础的古地震活动记录，预计将提供一个足够长的记录，使目前的地震假说可以更充分地测试。