My major research interests are tsunamis and numerical modeling of them. Predictive skills for tsunami behavior have rapidly developed over the last several decades. Based on numerical simulation, we can now reasonably estimate tsunami propagation and inundation resulting from an offshore sea surface deformation. However, the numerical results do not necessarily reflect the actual tsunami behaviors accurately, especially in nearshore and inundated areas, because of uncertainties in the modeling. Based on these situations, in my studies, observational and/or experimental studies are sometimes carried out to support the numerical results for a tsunami phenomenon. Using these results from the different approaches, we will achieve a comprehensive understanding of tsunami dynamics.