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

卡斯卡迪亚活动构造的一个主要问题是地震旋回。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，地貌研究现在表明，在过去的10000年里，可能发生了规模较大的地震。它们的大小和分布还有待研究。该项目将对卡斯卡迪亚海岸的沉积浊度进行分析和测年。如果可以证明它们在大范围内是同步的，那么它们可能有一个共同的触发因素。最有可能在地区范围内发生的跳跳虎是一场大地震。因此，这项研究如果成功，将有助于我们了解卡斯卡迪亚地震的规模和频率，那里的现代地震活动并不是很有启发性。这项研究将产生的沿整个收敛边缘的应变的性质和划分将有助于理解变形划分以及地震与非地震变形。

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.