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Water exchange and material exchange through a strait due to tidal flow

  • Yoshihiro Mazda
Article

Abstract

The process of material transport through a strait due to tidal flow is modeled, and then the differences between various concepts of tidal exchange which have been used hitherto are pointed out using this model. In particular, the exchange of water itself and the exchange of material should be distinguished even in the case where the material of interest is carried by the water,i.e., the material and water move as one body. Further, the physical meaning of “tidal trapping” (Fischeret al., 1979) is discussed by using the model in this paper. The relationship between the exchange ratio for the water itself (r) and the phase lag (δ) of material concentration to the tidal stream in a section of the strait, which is an important factor in tidal trapping, is obtained as follows:
$$\delta = \tan ^{ - 1} \left( {\tfrac{1}{r} - 1} \right)$$
Observational results at Lake Hamana (Shizuoka Pref) and at Kabira Cove (Okinawa Pref.) support the validity of the above relationship.

Keywords

Physical Meaning Water Exchange Water Move Observational Result Tidal Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Awaji, T., N. Imasato and H. Kunishi (1980): Tidal exchange through a strait: a numerical experiment using a simple model basin. J. Phys. Oceanogr.,10, 1499–1508.Google Scholar
  2. Dyer, K.R. (1973): Estuaries: A Physical Introduction. John Wiley & Sons, London, 140 pp.Google Scholar
  3. Dyer, K.R. (1974): The salt balance in stratified estuaries. Estuar. Coast. Marine Sci.,2, 273–281.Google Scholar
  4. Fischer, H. B. (1976): Mixing and dispersion in estuaries. Ann. Rev. Fluid Mech.,8, 107–133.Google Scholar
  5. Fischer, H.B., E.J. List, R.C.Y. Koh, J. Imberger and N.H. Brooks (1979): Mixing in Inland and Coastal Waters. Academic Press, New York, 483 pp.Google Scholar
  6. Hughes, F.W. and M. Rattray (1980): Salt flux and mixing in the Columbia River Estuary. Estuar. Coast. Marine Sci.,10, 479–493.Google Scholar
  7. Kadoyu, M., M. Kato and A. Wada (1980): On the water exchange in an enclosed sea area. Proc. 27th Japanese Conf. Coastal Eng., 429–433 (in Japanese).Google Scholar
  8. Kawamura, M., K. Shimizu, H. Koyama, H. Nakajima and T. Maekawa (1975): Hydrographic conditions and diffusion coefficient in the Bungo Channel. Umi to Sora,50, 43–58 (in Japanese).Google Scholar
  9. Keeling, C.D. and B. Bolin (1967): The simultaneous use of chemical tracers in oceanic studies. 1. General theory of reservoir models. Tellus,19, 566–581.Google Scholar
  10. Mazda, Y. (1982): Water exchange in Lake Hamana (I): salt transport types and geographical environment. J. Facul. Mar. Sci. Technol. Tokai Univ.,15, 1–16 (in Japanese).Google Scholar
  11. Mazda, Y. (1983): Water exchange in Kabira Cove, Ishigaki Island: a tidal trapping process in a vertical two-dimensional field. J. Oceanogr. Soc. Japan,39, 63–72.Google Scholar
  12. Nakamura, M. and S. Hagino (1979): The study on the water exchange mechanism in a stratified fluid. Proc. 26th Japanese Conf. Coastal Eng., 544–548 (in Japanese).Google Scholar
  13. Nakata, H. and T. Hirano (1976): On the tidal transport and exchange of sea water in Seto (straits) and approaches. Bull. Japan Soc. Fish. Oceanogr.,29, 7–14 (in Japanese).Google Scholar
  14. Onishi, S., S. Tanaka and T. Nishimura (1980): Study on tidal exchange phenomena at straits applying remote sensing from Landsat. Proc. Japan Soc. Civil Eng.,298, 63–75 (in Japanese).Google Scholar
  15. Oonishi, Y. and H. Kunishi (1979): Water exchange between adjacent vortices under an additional oscillatory flow. J. Oceanogr. Soc. Japan,35, 136–140.Google Scholar
  16. Parker, D.S., D.P. Norris and A.W. Nelson (1972): Tidal exchange at Golden Gate. Proc. Amer. Soc. Civil Eng.,2, 305–323.Google Scholar
  17. Simizu, K. and M. Kawamura (1981): Tidal exchange through Akashi Straits. Umi to Sora,57, 41–56 (in Japanese).Google Scholar
  18. Takeoka, H. and H. Higuchi (1982): Water exchange due to local eddies in harbors and embayments. Bull. Coast. Oceanogr.,19, 175–182 (in Japanese).Google Scholar
  19. Ueshima, H. and N. Hayakawa (1982): Characteristics of diffusion and dispersion in the Seto Inland Sea. Bull. Coast. Oceanogr.,20, 1–11 (in Japanese).Google Scholar
  20. Unoki, S. (1980): Exchange of bay waters and associated physical processes. Bull. Coast. Oceanogr.,17, 89–98 (in Japanese).Google Scholar

Copyright information

© the Oceanographical Society of Japan 1984

Authors and Affiliations

  • Yoshihiro Mazda
    • 1
  1. 1.Faculty of Marine Science and TechnologyTokai UniversityShimizu, ShizuokaJapan

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