Tsunamis generated by subaerial landslides: From laboratory experiments to geophysical events

Modeling of tsunami waves generated by subaerial landslides is important to provide accurate hazard and risk assessments in coastal areas. We perform small-scale laboratory experiments where a tsunami-like wave is generated by the collapse of a subaerial granular column into water. The maximal amplitude of the leading wave is shown to scale linearly with the instantaneous immersed volume of grains and sublinearly with the final immersed deposit. From available measurements of the immersed deposits of past geophysical events, the maximal amplitude of the generated wave predicted by our empirical law is in good agreement with previous numerical or experimental modelings based on the inland geometry of the slide. Our results suggest that o shore deposits of past landslides can be used to constrain the amplitude of paleo-tsunamis.

Modeling of tsunami waves generated by subaerial landslides is important to provide accurate hazard and risk assessments in coastal areas. We perform small-scale laboratory experiments where a tsunami-like wave is generated by the collapse of a subaerial granular column into water. The maximal amplitude of the leading wave is shown to scale linearly with the instantaneous immersed volume of grains and sublinearly with the final immersed deposit. From available measurements of the immersed deposits of past geophysical events, the maximal amplitude of the generated wave predicted by our empirical law is in good agreement with previous numerical or experimental modelings based on the inland geometry of the slide. Our results suggest that o shore deposits of past landslides can be used to constrain the amplitude of paleo-tsunamis.

Disciplines

Physical oceanography

Data

FileSizeFormatProcessingAccess
Robbe Saule raw data
11 KoCSVRaw data
How to cite
Robbe-Saule Manon, Morize Cyprien, Bertho Yann, Sauret Alban, Hildenbrand Anthony, Gondret Philippe (2021). Tsunamis generated by subaerial landslides: From laboratory experiments to geophysical events. SEANOE. https://doi.org/10.17882/75297
In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :
Robbe-Saule Manon, Morize Cyprien, Bertho Yann, Sauret Alban, Hildenbrand Anthony, Gondret Philippe (2021). From laboratory experiments to geophysical tsunamis generated by subaerial landslides. Scientific Reports, 11 (1), -. https://doi.org/10.1038/s41598-021-96369-6

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