Measurement of Tsunami Wave Eigenfunctions in Deep, Intermediate and Shallower Regions

The present communication describes a numerical study and investigation of the excitation of tsunami waves by an earthquake. Detailed analysis has been carried out to describe the properties of eigenfunctions which represent the values of wave potential, horizontal and vertical velocity, and acceleration components with angular frequencies corresponding to the deep, intermediate and shallow water waves. Analysis and measurement of eigenfunctions were also performed. It shows that as distance progresses from the deep to coastal regions, celerity reduces due to increment in significant wave heights. At 80 km distance from the origin of generation, celerity is 550 m/s in deep, 440 m/s in intermediate and 310 m/s in shallow water waves.