Recording signals from the Reser stadium implosion for site response and structure at the western edge of the Willamette Valley

We plan to record signals from the Reser stadium implosion planned for Jan 7, 2022. The primary objective is to determine how the site response and structure change at the transition from the Willamette Valley to the uplifted basement of the Coast Range across the Corvallis Fault. Secondary objectives include the possibility of detecting reflections from greater depth in the crust and any possible natural signals associated with the Cascadia plate boundary, which is thought to be at a depth of ~45 km beneath Corvallis. The instruments will be installed along a densely spaced ~5 km long linear profile extending from the stadium into the Coast Range and distributed within a 1 km radius of the stadium.

本研究计划记录2022年1月7日实施的雷瑟体育场（Reser Stadium）定向拆除爆破所产生的信号。本项目的核心研究目标为：探明横穿科瓦利斯断层（Corvallis Fault）的威拉米特谷（Willamette Valley）与海岸山脉（Coast Range）抬升基底之间的过渡区域内的场地响应与结构变化特征。次要研究目标包括：探测地壳更深层的反射信号，以及与卡斯卡迪亚板块边界（Cascadia plate boundary）相关的各类天然信号；据推测该板块边界位于科瓦利斯下方约45公里深度处。观测仪器将沿一条测点间距密集、总长约5公里的线性剖面布设，该剖面从雷瑟体育场延伸至海岸山脉；同时在体育场周边1公里半径范围内也会布设分布式观测仪器。