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Abstract
The Grid Refinement Technique has been used to determine the ray paths followed by tsunamis. This technique is modified to permit the ready determination of both the ray paths and also the wave fronts of the tsunami. This is achieved by considering a variational problem with variable endpoints. Only a slight increase in actual computation is required, but machine storage demands are high. Results are presented for wave front ray path diagrams for both the Tasman Sea and Indian Ocean.