Performance assessment of Tsunami-HySEA model for NTHMP tsunami currents benchmarking. Field cases

摘要

In this study, we present model results derived from the Tsunami Current Benchmarking Workshop held by the NTHMP (National Tsunami Hazard Mitigation Program) at Portland, Oregon, US, in February 2015 for the two benchmark problems dealing with field data. In this workshop, the Tsunami-HySEA model was used to perform the five proposed numerical benchmarks. The other three benchmarks, which are based on lab data, are the subject of a related paper (Macias et al., 2020). The results and comparisons with measured data for the two benchmarks which deal with field observations, described in the present paper, include: (1) Benchmark #2, impact of tsunami waves at Hilo Harbor, Hawaii, and (2) Benchmark #3, tsunami currents at Tauranga Harbor, New Zealand, both for data of the 2011 Tohoku tsunami. The numerical results demonstrate that the Tsunami-HySEA model is able to accurately reproduce sea surface elevations and current velocities for both the benchmark problems performed in a reduced local domain as in the case of the complete scenario modeled from the source to Hilo Harbor on the Pacific Ocean.