Journal
PURE AND APPLIED GEOPHYSICS
Volume 165, Issue 11-12, Pages 1991-2001Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00024-008-0413-x
Keywords
Tsunami; tsunami forecast
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Funding
- Joint Institute for the Study of the Atmosphere and Ocean ( JISAO) [NA17RJ1232]
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This paper presents a comparison of two tsunami forecasting systems: the NOAA/PMEL system (SIFT) and the Australian Bureau of Meteorology system (T1). Both of these systems are based on a tsunami scenario database and both use the same numerical model. However, there are some major differences in the way in which the scenarios are constructed and in the implementation of the systems. Two tsunami events are considered here: Tonga 2006 and Sumatra 2007. The results show that there are some differences in the distribution of maximum wave amplitude, particularly for the Tonga event, however both systems compare well to the available tsunameter observations. To assess differences in the forecasts for coastal amplitude predictions, the offshore forecast results from both systems were used as boundary conditions for a high-resolution model for Hilo, Hawaii. The minor differences seen between the two systems in deep water become considerably smaller at the tide gauge and both systems compare very well with the observations.
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