The potential of point clouds for the analysis of rock kinematics in large slope instabilities: examples from the Swiss Alps: Brinzauls, Pizzo Cengalo and Spitze Stei

Autor: Robert Kenner, Valentin Gischig, Zan Gojcic, Yvain Quéau, Christian Kienholz, Daniel Figi, Reto Thöny, Yves Bonanomi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Landslides, 19 (6)
ISSN: 1612-510X
Popis: Lidar measurements and UAV photogrammetry provide high-resolution point clouds well suited for the investigation of slope deformations. Today, however, the information contained in these point clouds is rarely fully exploited. This study shows three examples of large-scale slope instabilities located in Switzerland, which are actively monitored for reasons of hazard prevention. We used point clouds acquired by terrestrial laser scanning to (1) identify differences in kinematic behaviour of individual rock compartments; (2) highlight active shear planes within the moving rock mass; (3) define the kinematic process driving the slope displacements; (4) model basal sliding planes based on the 3D surface movements of rock slides; (5) calculate exact displacement angles, (6) provide estimates on destabilised rock volumes. This information has significantly contributed to the process understanding and has thus supported decision-making in hazard management.
Landslides, 19 (6)
ISSN:1612-510X
Databáze: OpenAIRE