Articles | Volume 20, issue 8
https://doi.org/10.5194/nhess-20-2255-2020
https://doi.org/10.5194/nhess-20-2255-2020
Research article
 | 
18 Aug 2020
Research article |  | 18 Aug 2020

The 1958 Lituya Bay tsunami – pre-event bathymetry reconstruction and 3D numerical modelling utilising the computational fluid dynamics software Flow-3D

Andrea Franco, Jasper Moernaut, Barbara Schneider-Muntau, Michael Strasser, and Bernhard Gems

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Cited articles

Basu, D., Das, K., Green, S., Janetzke, R., and Stamatakos, J.: Numerical simulation of surface waves generated by subaerial landslide at Lituya Bay Alaska, J. Offshore Mech. Arct., 132, 041101, https://doi.org/10.1115/1.4001442, 2010. 
Braathen, A., Blikra, L. H., Berg, S. S., and Karlsen, F.: Rock-slope failures in Norway: type, geometry, deformation mechanisms and stability, Norsk Geol. Tidsskr., 84, 67–88, 2004. 
Bridge, T.: When mountains fall into the sea: https://www.hakaimagazine.com/, last access: September 2018. 
Chuanqi, S., Yi, A., Qiang, W., Qingquan, L., and Zhixian, C.: Numerical simulation of landslide-generated waves using a soil-water coupling smoothed particle hydrodynamics model, Adv. Water Resour., 92, 130–141, https://doi.org/10.1016/j.advwatres.2016.04.002, 2016. 
Das, K., Janetzke, R., Basu, D., Green, S., and Stamatakos, J.: Numerical Simulations of Tsunami Wave Generation by Submarine and Aerial Landslides Using RANS and SPH Models, 28th International Conference on Ocean, Offshore and Arctic Engineering, Honolulu, USA, 5, 581–594, https://doi.org/10.1115/OMAE2009-79596, 2009. 
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Short summary
This study highlights the use of the software Flow-3D in reproducing landslide-generated impulse waves. Due to the available data and the possibility of comparing the results with other previous works, a numerical modelling investigation on the 1958 Lituya Bay tsunami event is proposed. It is noted that the rockslide impact into the waterbody has a key role in the wave initiation and thus its propagation. The concept used in this work can be applied to prevent such phenomena in future.
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