A numerical model for the efficient simulation of multiple landslide-induced tsunamis scenarios

Tsunami potential source in the eastern Sea of Marmara (NW Turkey), along the North Anatolian Fault system

“…Growing computational resources have enhanced considerably the variety of numerical methodologies adopted. In recent years, the interest on landslide tsunamis has been boosted through a series of works providing new insights on their peculiar characteristics (Heller et al 2016;Evers et al 2019;Heidarzadeh et al 2020;Løvholt et al 2020;Snelling et al 2020;Ruffini et al 2021;Iorio et al 2021). Comprehensive reviews of the approaches adopted for simulating landslide motion and water interactions, as well as available numerical techniques, can be found in Heidarzadeh et al (2014), Yavari-Ramshe and Ataie-Ashtiani (2016), and in Kirby et al (2022) which compares different codes applied to benchmarks with real case.…”

Landslide Tsunami Hazard Assessment: A Numerical Model for the Simulation of Multiple Landslide-Induced Tsunamis Scenarios in a Monte Carlo Framework

“…Here, we present an efficient model to perform such hazard analyses, based on solving the linear mildslope equation with a time-dependent source term representing the seafloor motion as detailed in Iorio et al (2021). This approach allows carrying out many computations, for a large number of landslide scenarios, in a Monte Carlo (MC) approach framework, at a reduced computational cost compared to other available methods, while still providing physically accurate simulations of most landslide tsunami generation and propagation.…”

“…The model and the procedure were validated using the results of a couple of physical model experiments: the tsunamis generated along a straight coastline by a submerged landslide studied by Enet and Grilli (2007) and the case of subaerial landslides around a circular shoreline island by Di Risio et al (2009). Details can be found in Iorio et al (2021). Here, the novel numerical method is applied to an actual case study: the multiple landslide tsunamigenic event that occurred in Palu Bay in 2018 (see overview and simulations in Schambach et al, 2021).…”