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. © 2013 Author(s).
Fine, I. V., & Thomson, R. E. (2013). A wavefront orientation method for precise numerical determination of tsunami travel time. Natural Hazards and Earth System Sciences, 13(11), 2863–2870. https://doi.org/10.5194/nhess-13-2863-2013