Abstract
Abstract. We present an automated terrestrial laser scanning (ATLS) system with automatic near-real-time change detection processing. The ATLS system was tested on the Séchilienne landslide in France for a 6-week period with data collected at 30 min intervals. The purpose of developing the system was to fill the gap of high-temporal-resolution TLS monitoring studies of earth surface processes and to offer a cost-effective, light, portable alternative to ground-based interferometric synthetic aperture radar (GB-InSAR) deformation monitoring. During the study, we detected the flux of talus, displacement of the landslide and pre-failure deformation of discrete rockfall events. Additionally, we found the ATLS system to be an effective tool in monitoring landslide and rockfall processes despite missing points due to poor atmospheric conditions or rainfall. Furthermore, such a system has the potential to help us better understand a wide variety of slope processes at high levels of temporal detail.
Highlights
IntroductionThe advent of automated terrestrial laser scanners (ATLSs) has made high-temporal-resolution terrestrial acquisitions easier (Adams et al, 2013; Eitel et al, 2013); automatic processing of the data is still required to relieve the post-processing burden
Because our test occurred during the spring season, the system scanned through a variety of atmospheric conditions
We presented a near-real-time terrestrial laser scanner monitoring system that was tested on an active landslide in the French Alps
Summary
The advent of automated terrestrial laser scanners (ATLSs) has made high-temporal-resolution terrestrial acquisitions easier (Adams et al, 2013; Eitel et al, 2013); automatic processing of the data is still required to relieve the post-processing burden This is especially important for landslide early warning monitoring, where processed results are needed as soon as possible for decision makers.
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