Articles | Volume 13, issue 11
https://doi.org/10.5194/nhess-13-2863-2013
https://doi.org/10.5194/nhess-13-2863-2013
Research article
 | 
15 Nov 2013
Research article |  | 15 Nov 2013

A wavefront orientation method for precise numerical determination of tsunami travel time

I. V. Fine and R. E. Thomson

Abstract. We present a highly accurate and computationally efficient method (herein, the "wavefront orientation method") for determining the travel time of oceanic tsunamis. Based on Huygens' Principle, the method uses an eight-point grid-point pattern and the most recent information on the orientation of the advancing wavefront to determine the time for a tsunami to travel to a specific oceanic location. The method is shown to provide improved accuracy and reduced anisotropy compared with the conventional multiple grid-point method presently in widespread use.

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