Purpose. The object of this work is to perform a comparative numerical simulation of generation and propagation of tsunami waves induced by the M = 7.6 earthquake on January 1, 2024 on the Noto Peninsula, Ishikawa Prefecture, Japan.

Methods and Results. Four different variants of a seismic source are simulated within framework of the earthquake source keyboard mechanism. A multi-block source is considered in which, while simulating the earthquake, a sequential motion of key-blocks was specified. It is shown that the dynamics of this process in a seismic source will determine the formation of corresponding tsunami source and wave fronts propagating from this source and that the shape of earthquake source affects the values of maximum wave heights in the water area significantly. Applying the information from the tide-gauge stations in the Sea of Japan and the Tsugaru and Tatar straits allows compare the real records of maximum values of the tsunami wave amplitudes at these stations and the computed tide-gauge ones resulted from numerical simulation of different dynamics of keyboard blocks in the seismic source.

Conclusions. This study demonstrates that the keyboard earthquake model is a viable tool for simulating complex earthquake sources, such as the one that occurred in the northwest of the Noto Peninsula and on the western coast of Honshu Island, an area home to a significant number of settlements and the largest Japanese operating nuclear power plants.