Protecting Canada’s Railway Network Using Remote Sensing Technologies

Benchmarked RADARSAT-2, SENTINEL-1 and RADARSAT Constellation Mission Change-Detection Monitoring at North Slide, Thompson River Valley, British Columbia: ensuring a Landslide-Resilient National Railway Network

“…A comparative analysis of InSAR time-series has led to a better appreciation of the reactivation behavior of the North Slide, and by extension, other landslides in the Thompson River valley affecting critical railway infrastructure. Similar to other active landslides along the transportation corridor (Eshraghian et al 2007(Eshraghian et al , 2008Hendry et al 2015;Huntley et al 2021b;Journault et al 2018), the consequences of ground movement at the North Slide depend on the scale and rate of ground movement (Table 3). Currently, the toe blocks are creating a condition of marginal stability west of the CP tracks (Figures 3,9b,.…”

“…Complimentary results from benchmark UAV photogrammetry and ground-based RTK-GNSS surveys demonstrate that satellite InSAR time-series analysis is suitable for active displacement monitoring and warning of landslide hazards (cf. Huntley et al 2021b). Although each change-detection method has limitations, our multi-sensor approach provides supplementary information to close data gaps and corroborate results.…”