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Field testing innovative differential geospatial and photogrammetric monitoring technologiesin mountainous terrain near Ashcroft,British Columbia,Canada

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Journal of Mountain Science 2021年第1期18卷 1-20页

作者： David HUNTLEY Peter BOBROWSKY Roger MACLEOD robert cocking Jamel JOSEPH Drew ROTHERAM-CLARKE Geological Survey of Canada 1500-605 Robson StreetVancouverBritish ColumbiaV6B 5J3Canada Geological Survey of Canada 9860 West Saanich RoadSidneyBritish ColumbiaV8L 4B2Canada

This paper presents a novel approach to continuously monitor very slow-moving translational landslides in mountainous terrain using conventional and experimental differential global navigation satellite system(d-GNSS)technologies.A key research question addressed is whether displacement trends captured by a radio-frequency“mobile”d-GNSS network compare with the spatial and temporal patterns in activity indicated by satellite interferometric synthetic aperture radar(InSAR)and unmanned aerial vehicle(UAV)*** testing undertaken at Ripley Landslide,near Ashcroft in south-central British Columbia,Canada,demonstrates the applicability of new geospatial technologies to monitoring ground control points(GCPs)and railway infrastructure on a landslide with small and slow annual displacements(<10 cm/yr).Each technique records increased landslide activity and ground displacement in late winter and early *** this interval,river and groundwater levels are at their lowest levels,while ground saturation rapidly increases in response to the thawing of surficial earth materials,and the infiltration of snowmelt and runoff occurs by way of deep-penetrating tension cracks at the head scarp and across the main slide *** over the last decade provides vital information for government agencies,national railway companies,and other stakeholders to understand geohazard risk,predict landslide movement,improve the safety,security,and resilience of Canada’s transportation infrastructure;and reduce risks to the economy,environment,natural resources,and public safety.

关键词： Landslide Change detection monitoring Global Navigation Satellite System Real-Time Kinematic System GeocubeTM Bathymetric Survey Unmanned Aerial Vehicle Interferometric Synthetic Aperture Radar

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