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Lai, Z. ., Sun Yat-Sen University, Guangzhou, China, laizhig@mail.sysu.edu.cn
Chen, C. ., University of Massachusetts-Dartmouth, New Bedford, USA, c1chen@umassd.edu
Beardsley, R. C., Woods Hole Oceanographic Institution, Woods Hole, USA, rbeardsley@whoi.edu
Lin, H. ., University of Massachusetts-Dartmouth, New Bedford, USA, hlin@umassd.edu
Sasaki, J. ., Yokohama National University, Yokohama, Japan, jsasaki@ynu.ac.jp

MODEL ASSESSMENT OF 2011 JAPAN TSUNAMI AND COASTAL INUNDATION PROCESSES

A high-resolution global-Japan coastal coupled FVCOM tsunami model system has been used to assess the tsunami dynamics and coastal inundation associated with the 2011 Japan M9.0 earthquake. This model includes complete oceanic processes such as tides, river discharges, surface wind stress and heat flux as well as the earthquake-derived sea floor changes. The model was validated by comparing with sea level measurements at more than 40 tidal gauges and the observed coastal inundation area. This process-oriented study was carried out to examine the dynamical (hydrostatic and nonhydrostatic) processes required to simulate the propagation and dispersion of earthquake-induced solitary waves toward the coast and wave breaking during the inundation. The experiments showed that the 2011 earthquake-generated tsunami waves were dominated by the long gravity waves and the major features of these waves could be captured well by the hydrostatic ocean model. Nonhydrostatic processes have a major impact on the wave transformation and breaking in the near-shore area before the coastal inundation occurred. Detailed comparisons for these different dynamics are presented with comparisons to field measurements.

Poster presentation

Session #:088
Date: 2/21/2012
Time: 10:30 - 16:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B1009