Airborne lidar (light detection and ranging) was used to create a high-resolution digital elevation model (DEM) and produce landslide hazard maps of the University of California, San Francisco Parnassus Campus. The lidar DEM consisted of nearly 2.8 million interpolated elevation values covering approximately 100 ha and posted on an 0.6 m horizontal grid, from which a set of 16 maps was produced. The first subset of maps showed aspects of the topography useful for landslide mapping, an engineering geological map and a qualitative slope hazard map. The second subset consisted of physics-based probabilistic landslide hazard maps for wet static, wet seismic, and dry seismic conditions. This case history illustrates the utility of lidar-based products, supplemented by field-based geological observations and physics-based probabilistic slope stability modeling, for the evaluation of existing and potential slope stability hazards on a steep and heavily forested site.
|Number of pages
|Bulletin of Engineering Geology and the Environment
|Published - 2009
Bibliographical noteFunding Information:
Acknowledgments The work described in this paper was funded by the University of California, San Francisco (UCSF). The UCSF project manager was Ms Ivy Chiao. Collection and initial processing of the lidar data was performed by Airborne 1 of El Segundo, California. Laurel Jiang of Rutherford & Chekene provided invaluable assistance during this project and referee Scott Burns offered suggestions for improvement of the manuscript. We also appreciate the early involvement of Ed Medley, who helped to initiate the project and bring together the authors. Rejean Couture helped to translate the French version of the abstract.
Copyright 2009 Elsevier B.V., All rights reserved.
- Digital terrain modeling
- Laser scanning
- Seismic slope stability
- Slope stability
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology