![]() Rockfall processes are now commonly studied through monitoring campaigns using repeat lidar scanning. ![]() compared volume estimates produced by alphaSolid with those obtained using a the more sophisticated Power Crust surface reconstruction algorithm and found that while alphaSolid systematically overestimated by over 50% in some cases, the degree of overestimation relative to Power Crust was relatively consistent for rockfalls of varying sizes, meaning the slope of the derived MCF curve was consistent between the methods. proposed the alphaSolid method which has since become increasingly accepted specifically, for each set of points defining a rockfall, this method automatically produces a volume estimation using the minimum alpha radius that results in a watertight manifold surface with correct topology. To develop a rational, reproducible approach to select the alpha radius, Bonneau et al. demonstrated the influence of selected alpha radius value on the obtained rockfall distribution. When using alpha shape surface reconstruction, Carrea et al. To further improve the understanding of the Poggio Baldi landslide, a time-independent rockfall hazard analysis aiming to define the potential runout associated with several rock block volumetric classes is a critical component to any subsequent risk analysis in similar mountainous settings featuring marly–arenaceous multilayer sedimentary successions and reactivated main landslide scarps. The highest concentration of trajectory endpoints occurred at the very top of the debris talus, which was constrained by a narrow channel, while longer horizontal travel distances were allowed on the lower portion of the slope. The rockfall scenarios were reconstructed and then tested based on the remote sensing observations of the rock mass characteristics of both the main scarp and the rockfall fragment inventory deposited on the slope. ![]() In this study, the analysis of multitemporal VOM (2016–2019) informed a rockfall trajectory analysis that was carried out with a physical-characteristic-based GIS model. The Poggio Baldi landslide (Central Italy) and its natural laboratory offers the possibility to monitor and characterise the slope to define a workflow for rockfall hazard analysis. The increased accessibility of drone technology and structure from motion 3D scene reconstruction have transformed the approach for mapping inaccessible slopes undergoing active rockfalls and generating virtual outcrop models (VOM). ![]()
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