Physical and numerical modelling of subaerial tsunamis generated by granular and solid-block landslides

Research output: Contribution to conferencePaperpeer-review


Subaerial landslides into bodies of water can generate destructive tsunamis. Recently, in December 2018, the collapse of the Anak Krakatau volcano (Indonesia), generated a tsunami that caused more than 400 deaths. This research is aimed at studying waves generated by granular and solid-block subaerial landslides and is focused on the wave generation phase. We present the validation of a CFD numerical model (FLOW3D-Hydro) by comparing numerical results with our subaerial landslide laboratory experiments carried out in a 0.26 m wide, 0.50 m deep and 4.0 m long wave tank at Brunel University London (UK). A three-phase flow simulation based on the incompressible viscous NavierStokess equations using Fractional Area/Volume Obstacle Representation is applied to describe the generation of subaerial landslides. The CFD model is first validated using physical experiments and then is applied to model approximately 100 cases by changing landslide parameters such as water depth, landslide travel distance, and landslide volume. Our validated model can help assess tsunami hazards in communities near potential subaerial landslides, such as areas close to underwater volcanoes.
Original languageEnglish
Publication statusPublished - 17 Dec 2021
EventAGU Fall Meeting 2021 - New Orleans, USA United States
Duration: 13 Dec 202117 Dec 2021


OtherAGU Fall Meeting 2021
Country/TerritoryUSA United States
CityNew Orleans


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