| In northern Idaho (USA), landslides along railway transportation corridors pose a threat for derailments and potential for pollution. One such derailment occurred in 2017 along the Moyie River and in 2020 a rockslide caused a train engine to derail into the Kootenai River resulting in diesel fuel contamination. In 2017 and 2021, mass movement sites were flown with Unmanned Aerial Systems (UAS) equipped with LiDAR along the Kootenai River, Moyie River, and Deep Creek in order to: (1) measure mass movement change using a Multiscale Model-to-Model
Cloud Comparison (M3C2) and (2) model mass movement susceptibility and characterization along these river corridors with object-based image analysis (OBIA). This study prototypes a methodology for railway companies to map geohazards along railway corridors using repeat LiDAR to facilitate long term monitoring and mitigate future derailments, service interruptions,
and environmental contamination. |