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Lidar-Based Rock-Fall Hazard Characterization of Cliffs

January 1, 2017

Rock falls from cliffs and other steep slopes present numerous challenges for detailed geological characterization. In steep terrain, rock-fall source areas are both dangerous and difficult to access, severely limiting the ability to make detailed structural and volumetric measurements necessary for hazard assessment. Airborne and terrestrial lidar survey methods can provide high-resolution data needed for volumetric, structural, and deformation analyses of rock falls, potentially making these analyses straightforward and routine. However, specific methods to collect, process, and analyze lidar data of steep cliffs are needed to maximize analytical accuracy and efficiency. This paper presents observations showing how lidar data sets should be collected, filtered, registered, and georeferenced to tailor their use in rock fall characterization. Additional observations concerning surface model construction, volumetric calculations, and deformation analysis are also provided.

Publication Year 2017
Title Lidar-Based Rock-Fall Hazard Characterization of Cliffs
DOI 10.1061/9780784412121.309
Authors Brian D. Collins, Greg M.Stock
Publication Type Conference Paper
Publication Subtype Conference Paper
Index ID 70188860
Record Source USGS Publications Warehouse
USGS Organization Geology, Minerals, Energy, and Geophysics Science Center