EFFECTS OF WAVE, TIDAL CURRENT AND OCEAN CURRENT COEXISTENCE ON THE WAVE AND CURRENT PREDICTIONS IN THE TSUGARU STRAIT
ICCE 2014 Cover Image
PDF

Keywords

Marine renewable energy
tidal and ocean currents
sea waves

How to Cite

Saruwatari, A., Yoneko, Y., & Tajima, Y. (2014). EFFECTS OF WAVE, TIDAL CURRENT AND OCEAN CURRENT COEXISTENCE ON THE WAVE AND CURRENT PREDICTIONS IN THE TSUGARU STRAIT. Coastal Engineering Proceedings, 1(34), currents.42. https://doi.org/10.9753/icce.v34.currents.42

Abstract

The Tsugaru Strait between Hokkaido and Honshu islands, connecting the Pacific Ocean and Japan Sea, has been used for shipping and fishery. The current in the strait formed by a tidal current and ocean current so-called Tsugaru Warm Current is recently assumed to be one of the potential renewable energy source in Japan. The present study investigates the effects of the coexistence of the tidal/ocean currents as well as sea waves on the predictions of the physical conditions around this strait. We performed two different numerical experiments for characterising the physical environment associated with current-current and wave-current interactions. Harmonic analysis of the tidal current shows tidal ellipses of the diurnal and semi-diurnal constituents are stretched into the direction of the ocean current and enable to be reasonably predicted without considering the effect of the current-current interaction. Wave height in the strait is shown to vary 0.75-1.5 times of the original wave height by attenuated and amplified by the coexisting current. It will be indicated that the physical environment associated with the current-current and wave-current interactions should be considered for effective utilisation of this area.
https://doi.org/10.9753/icce.v34.currents.42
PDF

References

Marshall, J., A. Adcroft, C. Hill, L. Perelman and C. Heisey (1997a): A finite-volume, incompressible Navier Stokes model for studies of the ocean on parallel computers. J. Geophys. Res., 102 (C3), pp. 5753-5766.

Marshall, J., C. Hill, L. Perelman and A. Adcroft (1997b): Hydrostatic, quasi-hydrostatic, and nonhydrostatic

ocean modeling, J. Geophys. Res., 102 (C3), pp. 5733-5752.

Miyazawa, Y., R. Zhang, X. Guo, H. Tamura, D. Ambe, J.-S. Lee, A. Okuno, H. Yoshinari, T. Setou and K. Komatsu (2009): Water mass variability in the western North Pacific detected in a 15-year eddy resolving ocean reanalysis, J. Oceanogr., 65, pp. 737-756.

Egbert, G.D. and S.Y. Erofeeva (2002): Efficient Inverse Modeling of Barotropic Ocean Tides, J. Atmos. Oceanic Technol., 19, 2, pp. 183-204.

Booij, N., R.C. Ris and L.H. Holthuijsen (1999): A third-generation wave model for coastal regions, Part I, Model description and validation, J. Geophys. Res., 104 (C4), pp. 7649-7666.

Ris, R.C., N. Booij and L.H. Holthuijsen (1999): A third-generation wave model for coastal regions, Part II, Verification, J. Geophys. Res., 104 (C4), pp. 7667-7681.

Saruwatari, A., D.M. Ingram and L. Cradden (2013): Wave-current interaction effects on marine energy converters, Ocean Eng., 73, pp. 106-118.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.