Submarine Landslides – From Process Understanding to Hazard Assessment
Submarine Landslides – From Process Understanding to Hazard Assessment
Submarine landslides represent a substantial hazard to offshore and coastal infrastructure. They may range greatly in scale, from local slope failures that may impact nearby structures, to giant landslides giving rise to major consequences in the far field. To assess and mitigate potentially induced risk, it is important to understand and quantify related geophysical processes, the landslide dynamics, as well as secondary effects such as tsunamis. Here, we will first present examples of major submarine landslides and describe their characteristics, supplemented with examples of events originating onshore. We will then outline methods to assess submarine landslide hazards, including the geophysical characterization, slope stability screening for the broader study domain, and triggering possible release of landslide scenarios and corresponding probability. Furthermore, we will present models for landslide dynamics, and how these may be used for analyzing the run-out distance, impact on structures, and tsunami generation. To this end, concrete geohazard studies will be used throughout the presentation to exemplify the applications of the methods. Finally, we will give an outlook discussing how research from adjacent fields can contribute to future hazard assessment.
F. Lovholt; Brian Carlton; Carl Fredrik Forsberg; C. B. Harbitz; Z. Liu; M. Vanneste; R. Urgeles
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
Keynote Papers
https://doi.org/10.53243/ISFOG2025-659
Contact Information
- Secretary General - Dr A M McNamara
- Email: [email protected]
- Phone: +44 20 7040 8154
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