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Landslide monitoring using multitemporal terrestrial laser scanning for ground displacement analysis
In the analysis of the temporal evolution of landslides and of related hydrogeological hazards, Terrestrial Laser Scanning seems to be a very suitable technique for morphological description and displacement analysis. In this note we present some procedures designed to solve specific issues related to monitoring. A particular attention has been devoted to data georeferencing, both during survey campaigns and while performing statistical data analysis. The proper interpolation algorithm for DEM generation has been chosen taking into account the features of the landslide morphology and of the acquired datasets. For a detailed analysis of the different dinamics of the hillslope, we identified some areas with homogeneous behaviour applying in a GIS environment a sort of rough segmentation to the grid obtained differentiating two surfaces. This approach has allowed a clear identification of ground deformations, obtaining detailed quantitative information on surficial displacements. These procedures have been applied to a case study on a large landslide of about 10 hectares, located in Italy, which recently has severely damaged the national railway line. Landslide displacements have been monitored with TLS surveying for three years, from February 2010 to June 2012. Here we report the comparison results between the first and the last survey.
Landslide monitoring using multitemporal terrestrial laser scanning for ground displacement analysis
In the analysis of the temporal evolution of landslides and of related hydrogeological hazards, Terrestrial Laser Scanning seems to be a very suitable technique for morphological description and displacement analysis. In this note we present some procedures designed to solve specific issues related to monitoring. A particular attention has been devoted to data georeferencing, both during survey campaigns and while performing statistical data analysis. The proper interpolation algorithm for DEM generation has been chosen taking into account the features of the landslide morphology and of the acquired datasets. For a detailed analysis of the different dinamics of the hillslope, we identified some areas with homogeneous behaviour applying in a GIS environment a sort of rough segmentation to the grid obtained differentiating two surfaces. This approach has allowed a clear identification of ground deformations, obtaining detailed quantitative information on surficial displacements. These procedures have been applied to a case study on a large landslide of about 10 hectares, located in Italy, which recently has severely damaged the national railway line. Landslide displacements have been monitored with TLS surveying for three years, from February 2010 to June 2012. Here we report the comparison results between the first and the last survey.
Landslide monitoring using multitemporal terrestrial laser scanning for ground displacement analysis
Maurizio Barbarella (author) / FIANI, Margherita (author) / Andrea Lugli (author) / Maurizio, Barbarella / Fiani, Margherita / Andrea, Lugli
2015-01-01
Landslide monitoring using multitemporal terrestrial laser scanning for ground displacement analysis
Article (Journal)
Electronic Resource
English
DEM/DTM , Landslide , Monitoring , TLS
DDC:
710
Movement and Erosion Quantification of Large Landslide through Terrestrial Laser Scanning
| Trans Tech Publications | 2013