Digital Elevation Models of Rockfalls and Landslides: A Review and Meta-Analysis

The scope of this paper is to summarize previous research pertaining the use digital elevation models (DEMs) and terrain (DTMs) in study rockfalls landslides. Research from 1983 2020 was surveyed order understand how spatial resolution DEMs DTMs affects landslide detection, validation, mapping. Another major question examined relationship between DEM extent rockfall or event. It emerged that, for landslides, majority researchers used with a 10 m 30 m, while rockfalls, they 5 20 m. We concluded that very high (less than m) are suitable local-scale occurrences, medium-resolution (from regional-scale events. High associated accuracy detailed structural characteristics, medium better illustrates topographic features. A low pixel size (more 90 not recommended type research. Susceptibility maps, inventory hazard risk zones, vulnerability assessments some main tools landslide/rockfall investigations, indexes, methods, models, software optimize reliability results. All these parameters closely related as cell credibility final outcome.