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

9803018金手指 卡斯卡迪亚活动构造的一个主要问题是地震周期。 一般来说，它被认为是一个安静的地区，几乎没有活跃的地震活动。 然而，地貌研究表明，在过去的10，000年里发生了地震，可能是大规模的地震。 其规模和分布尚待探讨。 该项目将分析卡斯卡迪亚海岸的沉积浊流并确定其日期。 如果它们可以在大范围内同步，那么它们可能有一个共同的触发器。 区域范围内最有可能发生的地震是大地震。 因此，这项研究，如果成功的话，将大大有助于我们了解卡斯卡迪亚地震的规模和频率，那里的现代sesmicity不是很有启发性。 从这项研究中将出现的应变的性质和分布沿着整个收敛边缘，将有助于理解变形分区和地震与抗震变形。

9803018Goldfinger A major concern of the active tectonics of Cascadia is that of the earthquake cycle. In general it is considered a quiet zone, with little active seismicity. However, geomorphic studies are now showing that earthquakes, probably of large magnitude, have occurred in the last 10,000 years. Their magnitude and distribution are yet to be explored. The project will analyze and date the sedimentary turbidities of the coast of Cascadia. If they can be shown to synchronous over a wide area, then it follows that they may have had a common trigger. The most likely tigger on a regional scale is a large earthquake. Thus this study, if successful, will contribute greatly to our understanding of the size and frequency of earthquakes in Cascadia, where the modern sesmicity is not very revealing. The nature and partition of strain along the entire convergent margin that will emerge from this study will aid in the understanding of deformation partitioning and seismic versus aseismic deformation.