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Coastal Current and Upper Layer Mixing

Introduction

This research project study the upper layer mixing at ocean surface interface. The applications of this study are improve of the storm surge, momentum and gas transfer at the atmospheric and ocean interface. The horizontal current is generated by wind direct induced momentum and wind-wave breaking. The vertical mixing in upper layer of the ocean surface is mainly caused by the wind-wave breaking. However, the state of art storm surge model uses vertically integrated long wave model and the upper shear current is not explicitly considered. The vertical shear current becomes important if water depth is greater than 20-30 meters. We are developing the depth dependent theory to improved the vertically integrated storm surge model based on the 3D ocean model. The numerical simulations coupling ocean model (Regional Ocean Modeling System, ROMS) and wave model (Simulating Waves Nearshore, SWAN) for validation of the theory of momentum and scalar transfer.

Collaborators

  • Hajime Mase, DPRI
  • Tomohiro Yasuda, DPRI

Period

This project started 2006 and funded by Japan Society for the Promotion of Science.

Results

TBA

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Memorandum

References