Abstract
Current measurements made with a Doppler Current Profiler were taken along cross sections in the Obatake Seto Strait, a small strait in the western part of the Seto Inland Sea.
The energy loss between two cross sections of the strait was estimated using the control volume analysis of the stationary one-dimensional energy equation. The large energy loss observed in the strait cannot be explained in terms of general bottom friction in the coastal region. The loss is attributed to the form loss, which is accompanied by internal turbulence and vortices generated by the specific topography of the strait, in addition to the loss by friction. This is supported by the fact that the energy loss in the strait differs, depending upon the current direction.
Similar content being viewed by others
References
Ashida, K. (1962): On hydraulics of tranquil flow through channel expansions and its contributions to practical problems. Annuals, Disaster Prevention Research Institute, Kyoto University,5-A, 223–225 (in Japanese with English abstract and legends).
Imasato, N. and T. Awaji (1982): A numerical study on water exchange through the Akashi and the Naruto Straits. Bull. Coastal Oceanogr.,20, 19–32 (in Japanese).
Nakagawa, H. and I. Nezu (1987): Experimental investigation on turbulent structure of backward-facing step flow in an open channel. J. Hydraulic Res.,25, 67–88.
Nishimura, T., S. Onishi and S. Tanaka (1981): Remote-sensing as a onsite flow visualization technology for coherent structure in the natural flow field. Proc. 25th Japanese Conf. Hydraulics, 553–560 (in Japanese).
Prandtl, L. (1965): Führer durch die Strömungslehre. 6 Auflage. Corona Press, Tokyo, 346 pp (in Japanese translated from German).
Takasugi, Y., T. Higo, H. Noguchi and T. Fujiwara (1986): Current measurements by Doppler Current Profiler. Rep. Government Industrial Research Institute, Chugoku,27, 11–26 (in Japanese with English abstract and legends).
Takasugi, Y., T. Higo and H. Noguchi (1987): Characteristics of velocity distributions in a strait: Current measurements by Doppler Current Profiler. La mer,25, 167–174 (in Japanese with English abstract and legends).
Tsubaki, T. (1973): Suirigaku (I) (Hydraulics. I). Morikita Press, Tokyo, 208 pp. (in Japanese).
Yanagi, T., H. Takeoka and H. Tsukamoto (1982): Tidal energy balance in the Seto Inland Sea. J. Oceanogr. Soc. Japan,38, 293–299.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Takasugi, Y., Higo, T. & Fujiwara, T. Energy balance of the tidal current in the Obatake Seto Strait. Journal of the Oceanographical Society of Japan 45, 24–33 (1989). https://doi.org/10.1007/BF02108792
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02108792