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

由于缺乏足够长的历史地震记录，一些地震特征模型，如地震间隙假说、重复率、聚类和其他滑动可预测或时间可预测的模型，仍然没有得到很好的检验。本研究继续对卡斯卡迪亚辐合边缘的浊积岩历史进行研究，该边缘的海底通道记录了可能仅由大地震引发的区域性海底滑动的全新世历史。研究人员将对整个地区的岩心进行年代测定和对比，以验证这一假设，即这些岩心记录了与俯冲有关的大型地震的历史。如果得到证实，基于浊积岩事件的古地震活动记录有望提供足够长的记录，以便能够更充分地验证当前的地震假设。

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.