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Chen, C. ., University of Massachusetts-Dartmouth, New Bedford, USA, c1chen@umassd.edu
Lai, Z. ., University of Massachusetts-Dartmouth, New Bedford, USA, z.lai@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
Lin, J. ., Woods Hole Oceanographic Institution, Woods Hole, USA, jlin@whoi.edu
Ji, R. ., Woods Hole Oceanographic Institutin , Woods Hole, USA, rji@whoi.edu

MODEL ASSESSMENT OF INUNDATION AT THE FUKUSHIMA DAI-ICHI NUCLEAR POWER PLANT FACILITY AND INITIAL SPREAD OF RADIONUCLIDES IN THE COASTAL OCEAN

A nested global-coastal FVCOM system has been used to investigate coastal inundation along northeast Honshu Island caused by the March 11 2011 earthquake. After successfully reproducing sea level recorded at coastal tidal gauges and measured inundation areas in the region, the model system was used to examine in detail the coastal flooding that led to major damage at the Fukushima Dai-ichi nuclear power plant facility and subsequent release of radionuclides into coastal waters and initial spread across the shelf into deeper water. With 5-m grid resolution around the facility, model results suggest that the breakwaters (designed to protect harbor in front of the facility from offshore waves) tended to guide the tsunami waves around the breakwaters and intensify flooding along the coast just to the north and south of the facility. The retreat of the flood waters appears to cause much of the damage to the facility. Model results show that the initial trajectories, dispersion and settlement of radionuclides released at the facility were influenced over the shelf by tidal flushing, wind driving and meso-scale features.

http://fvcom.smast.umassd.edu

Session #:088
Date: 2/21/2012
Time: 14:30
Location: Ballroom E

Presentation is given by student: No