NUMERICAL MODELLING OF TSUNAMI PROPAGATION IN IDEALISED CONVERGING CHANNELS

Tsunamis are long gravity waves caused by the displacement of a large volume of water, such as through tectonic movements or landslides. They threaten passing ships, dams and buildings, leading to devastating disasters. The characteristics of tsunamis, such as the wave height, wavelength and direction, are significantly influenced by the geometry of the water body (Ruffini et al., 2019; Chen et al., 2023). Tsunamis propagating in converging water bodies impact the sidewalls or shores at an oblique angle. To gain a deeper understanding of how tsunamis propagate in converging water bodies, Chen et al. (2023) conducted a study on the propagation of solitary waves along the symmetry axis of idealised, symmetrical, converging water bodies. They discovered that Mach reflection has a substantial impact on the distribution of wave amplitudes in relatively wide channels and suggested a new predictive approach.