High Resolution Topography along the Lost River Valley, Idaho 2019

<p>The goal of this project was to systematically measure fault vertical separation to produce the most comprehensive throw dataset along the Lost River Fault (which was activated during the 1983 Borah Peak earthquake), as well as in prehistoric earthquakes. A database was created to better understand coseismic faulting processes, refine scaling laws, and further develop global probabilistic hazard calculations. (Bello et al., in prep.) </p> <p>Over 10,000 photographs were acquired using a DJI Phantom 4 Pro and a Phantom 4 Unmanned Aerial Vehicles (UAVs) that flew at ~50-110 meters above ground. In total, ~20 km along the strike of the Lost River Fault was measured at 13 different areas with an average width (fault trace normal) of ~417 m. </p>

本项目的核心目标为系统性测量断层垂直位移（throw），以构建覆盖1983年博拉峰地震触发的Lost River断层（Lost River Fault）及史前地震事件的最全面断层位移数据集。为更深入解析同震断层作用过程、完善尺度律（scaling laws），并进一步推动全球概率危险性计算的发展，研究团队构建了专属数据库。（Bello等，待发表）

研究采用大疆精灵4 Pro（DJI Phantom 4 Pro）与精灵4无人机（UAV）在距地面约50至110米的航高作业，累计采集超1万张影像。本次研究在13处独立区域对Lost River断层开展测量，总覆盖断层走向长度约20千米，测量区域沿断层迹线法线方向的平均宽度约为417米。