Constraining Slip Distribution of the Cascadia Subduction Zone Offshore Central Oregon with Seafloor Geodesy

这一建议旨在对卡斯卡迪亚俯冲带的板块运动进行大地测量。俄勒冈海岸外的三个地点，一个在进入的板块上测量相对板块运动，另两个在大陆斜坡上测量与断层运动和变形有关的运动，将以厘米为尺度监测水平位移。这将是首次对上板块卡斯卡迪亚运动和断层行为进行海上监测。这项工作将有助于更好地了解卡斯卡迪亚的地震和海啸风险。它实现了一种新的自主数据收集方法。它为海底设定了永久性基准，以便监测可以持续到不确定的未来。应答器将被回收和再利用，并成为仪器池的一部分，可用于将来扩展这些研究

This proposal seeks to initiate geodetic measurements of plate motion in the Cascadia subduction zone. Three sites off the Oregon coast, one on the incoming plate to measure relative plate motion and two on the continental slope to measure motions related to fault motions and deformation will be monitored for horizontal displacement at the cm scale. These will be the first offshore monitors of upper-plate Cascadia motion and fault behavior. This work will lead to a better understanding of earthquake and tsunami risk in Cascadia. It implements a new autonomous approach to data collection. It places permanent benchmarks on the seafloor so that monitoring can continue into the indefinite future. Transponders will be recovered and reused and become part of instrument pool that can be used to extend these studies in the future