GEOPRISMS Posdoctoral Fellowship: Systematic search and characterization of very low frequency earthquakes and offshore tremor in Cascadia using the Amphibious Array

这项研究将沿着卡斯卡迪亚俯冲带的整个边缘，从海沟到过渡带的下倾边缘，系统地寻找甚低频地震(VLFE)。VLFE的来源将被定位和表征，以更好地理解断层滑动的物理，特别是在锁定带的边缘。这项研究将更好地描述地震辐射的性质及其沿地壳断裂带的时空变异性。它还有助于我们更好地理解慢滑移幕的地震辐射全谱、慢地震的物理机制及其与常规地震活动的关系。它还可能阐明缓慢的地震活动对大破坏性地震成核的影响。这项研究将形成一个在PI导师的指导下为新博士后进行的早期职业研究项目。影响包括支持新的年轻研究员的职业发展。这项研究将检查俯冲带的地震活动，该带可能会产生巨大的破坏性地震。它反映了NSF-GeoPRISMS和卡斯卡迪亚倡议的一些主要目标，并很好地利用了两栖阵列。这项研究的结果可能有助于规划有重点的跨学科实验，并指导未来研究目标区域的选择。

The study will undertake a systematic search for very low frequency earthquakes (VLFE), along the entire margin of Cascadia subduction zone, from the trench to the down-dip edge of the transition zone. The sources of VLFEs will be located and characterized to better understand the physics of fault slip, particularly at the edges of the locked zone. The study will better characterize the nature of seismic radiation and their spatiotemporal variability along the fault zone in the crust. It is also holed that it will improve our understanding of the full spectrum of the seismic radiation during slow slip episodes, physical mechanism governing slow earthquakes, and their relationship with regular seismicity. It may also shed light on the implications of the slow seismic activities on the nucleation of large damaging earthquakes. The study will form an early career research project for a new postdoc under the mentorsuip of the PI.Broader impacts include support of career development of a new young investigator. The study will examine the seismicity of a subduction zone that can potentially produce great damaging earthquakes. It reflects some of the major goals of the NSF-GeoPRISMS and the Cascadia Initiative, and makes good use of the Amphibious Array. Results from this study may help in planning focused interdisciplinary experiments, and guide the selection of target areas for future research.