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Measurement of the Kuroshio and Its Associated Luzon Strait Throughflow by Ocean Acoustic Tomography

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Annual rept.

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The Luzon Strait is located at the western edge of the North Pacific subtropical front. ENSO related variability occurring in the tropical Pacific is directly transferred to the strait through the meridional shift and transport change of the North Equatorial Current NEC. Also the Luzon Strait throughflow, a branch of the Kuroshio, produce a significant source not only to Kuroshio variability in the East China Sea and around Japan far downstream of the strait, but also to the climate variability in the South China Sea. The volume and heat exchange between the western North Pacific and South China Sea by the strait throughflow also serve to be a trigger to global climate changes through the air-sea interaction there. On the other hand, there are intense internal tide activities in the Luzon Strait because of the interaction of barotropic tides with sills at the depth 800-900m of main thermocline. Strong turbulent mixing, generated by the breaking of internal tides and the associated internal waves, increases eddy viscosity and diffusivity and modifies the throughflow parameterization.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors

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