Multiscale landslide susceptibility assessment

Charlotte Gilles, Trevor Hoey, Richard Williams
2019
This is a Full Scientific Report resulting from NERC Geophysical Equipment Facility Loan 1062, principal investigator Dr Richard Williams

Abstract

As per Loan Number 1062, this project set out to generate Digital Elevation Models (DEM) of a landslide-prone slope to calculate volumetric change using the Riegl VZ-1000 long range scanner. The scanner was deployed at Glen Ogle, Stirlingshire on 4 occasions: October 2016, May 2017, September 2017 and April 2018. The Riegl VZ-1000 scanner was used to provide high-resolution data coverage of topography over a broad (3 km x 1 km) spatial scale. Error surfaces were categorised in the field by noting the ground cover and associating a code within the RtK check points. The capabilities and limitations of long range TLS for long-term monitoring and precise modelling of slope failures were investigated to analyse whether a multi-method approach could be implemented to generate surface models of sufficient consistency to identify the development of slope instability.