Tsunamis generated by rockslides
Through the years 2005 to 2011, NGI performed investigations for the Åknes-Tafjord project related to a large potential rock slide that may plunge into the Storfjorden in western Norway.
Published 21.06.2006
, last updated 21.06.2023
Inundation modeling at Hellesylt of a tsunami generated by a potential rockslide at Åknes
In the period 2005-2011, NGI has worked with investigation and monitoring aspects, including:
- geological and geophysical investigations
- drilling with instrumentation and logging
- installation of different monitoring systems
- laboratory experiments
- simulations of potential future slide-generated tsunamis
- development of improved models for tsunamis generated by rockslides
- improved models for tsunami propagation
For the numerical modeling of the tsunamis, we have combined the tsunami propagation model GloBouss (https://nctr.pmel.noaa.gov/ComMIT/) and the widely used run-up model ComMIT/MOST.
See also animations for more information from the numerical modeling of tsunami-generated rockslides:
- Numerical model tsunami Aaknes - Hellesylt 54Mm3 (https://www.youtube.com/watch?v=1XabLfL5VLk)
- Run-up at Hellesylt: lab vs. numerical model (https://www.youtube.com/watch?v=6GxAr86HU5Q)
Sylfest Glimsdal
Senior Specialist Climate Adaptation and Hydrodynamics sylfest.glimsdal@ngi.no+47 909 72 669