University of Twente Student Theses


Landslide early warning runout modeling : case study in Norway.

Collazos Cortes, D.F. (2022) Landslide early warning runout modeling : case study in Norway.

[img] PDF
Abstract:This thesis investigated the potential of integrating rainfall-induced failure and runout physically-based modeling in territorial Landslide Early Warning Systems (LEWSs) to predict local landslide impact areas. The study was framed in the context of the Norwegian LEWS, and the event simulated occurred on August 16, 2011, in Kjellberget, Stjørdal. A physically-based model was built and calibrated using LISEM, which allowed structuring a multi-process model capable of simulating slope stability to obtain failure depth, used as initial volume for runout. The calibration was based on slope stability, and the calibrated parameters were soil depth, cohesion, and Internal Friction Angle. The results gave information about the variation of Factor of Safety, Failure Depth, and Cohen's Kappa. Failure and runout maps were produced with the combinations that yield the highest precision, recall, and F1 to examine the accuracy of the simulations. The results showed that the initiation areas and runout directions were generally well replicated but not the runout volumes. It was concluded that the calibration was inadequate because it did not consider the multi-processes affecting the final landslide impact area. Also, it is non-viable to apply the proposed methodology in territorial LEWSs. Further research could explore approaches to generate larger runout extents.
Item Type:Essay (Master)
Faculty:ITC: Faculty of Geo-information Science and Earth Observation
Subject:38 earth sciences
Programme:Geoinformation Science and Earth Observation MSc (75014)
Link to this item:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page