Tsunami Generation and Propagation
This study aims at understanding the role of tide in tsunami propagation along a channel lying on a earthquake-prone region. The goal is to assess the performance of fully nonlinear tide-tsunami models when compared to composite models in which tides and tsunamis are linearly superimposed. We find that both types of models are sensitive to the tidal phase at which the tsunami is triggered and the local depth of the channel. Composite models, however, adequately predict the surface elevations, but largely overestimate currents. These outcomes emphasize the importance of addressing tide-tsunami interactions with fully nonlinear models on hazard assessments.