土木学会論文集B2（海岸工学），Vol. 72, No. 2, I_457─I_462, 2016.

211657-8501
E-mail:hiroaki1174226@gmail.com
657-8501
E-mail:uchiyama@harbor.kobe-u.ac.jp

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ocean reanalysis. J. Oceanogr., Vol. 65, pp. 737-756, 2009.
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,B2	 ,Vol. 68, No. 2, pp. I_436-I_440, 2012.

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Vol. 30 pp. 4–15 1992.
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(2016. 3. 16)

IMPACTS ON THE KUROSHIO DUE TO TYPHOONSOFF SHIKOKU ISLAND AND KII CHANNELHiroaki TADA and Yusuke UCHIYAMAA submesoscale eddy-permitting oceanic reanalysis is carried out with exploiting the JCOPE2-ROMS
downscaling system forced by the JMA GPV-MSM atmospheric reanalysis with a particular attention tothe two consecutive super typhoons Phanfone and Vongfong in the fall 2014. On the Pacific side of Japan
off Shikoku Island, the Kuroshio main body oscillates horizontally and vertically upon collisions withnear-inertial internal gravity waves maintained by inertial resonance in the mixed layer, followed by substantial alteration of the Kuroshio path in the downstream region. A velocity rotary spectrum extracts adistinct peak in the near-inertial frequency band on the offshore side of the Kuroshio with clockwise rotation due to near-inertial oscillations caused by the typhoons. On the coastal side, it peaks at around periods of about 3 days with counter-clockwise rotation, which correspond to the shedding frequency ofmesoscale eddies released from Cape Ashizuri. These eddies are enhanced by the typhoons to promoteoscillations of the Kuroshio axis at around the 3-day period.

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