Journal of Oceanography

, 65:721 | Cite as

A numerical study of the seasonal circulation in the Seto Inland Sea, Japan

Original Articles

Abstract

The seasonal variation of water circulation in the Seto Inland Sea is investigated using a high resolution, three-dimensional numerical ocean model. The model results are assessed by comparison with long-term mean surface current and hydrographic data. The simulated model results are consistent with observations, showing a distinct summer and winter circulation patterns. In summer the sea water is highly stratified in basin regions, while it is well mixed near the straits due to strong tidal mixing there. During this period, a cold dome is formed in several basins, setting up stable cyclonic eddies. The cyclonic circulation associated with the cold dome develops from May and disappears in autumn when the surface cooling starts. The experiment without freshwater input shows that a basin-scale estuarine circulation coexists with cyclonic eddy in summer. The former becomes dominant in autumn circulation after the cold dome disappears. In winter the water is vertically well mixed, and the winter winds play a significant role in the circulation. The northwesterly winds induce upwind (downwind) currents over the deep (shallow) water, forming a “double-gyre pattern” in the Suo-Nada, two cyclonic eddies in Hiuchi-Nada, and anticyclonic circulation in Harima-Nada in vertically averaged current fields.

Keywords

Numerical simulation general circulation seasonal variation cold dome cyclonic eddy wind-induced circulation Seto Inland Sea 

References

  1. Awaji, T., N. Imasato and H. Kunishi (1980): Tidal exchange through a strait: A Numerical experiments using a simple model basin. J. Phys. Oceanogr., 10, 1499–1508.CrossRefGoogle Scholar
  2. Balotro, R. S., A. Isobe, M. Shimiz, A. Kaneda, T. Takeuchi and H. Takeoka (2002): Circulation and material transport in Suo-Nada during spring and summer. J. Oceanogr., 58, 759–773.CrossRefGoogle Scholar
  3. Blumberg, A. F. and G. L. Mellor (1987): A description of a three dimensional coastal ocean circulation model. p. 1–16. In Three-Dimensional Coastal Ocean Models, Coastal Estuarine Stud., Vol. 4, ed. by N. Heaps, AGU, Washington, D.C.Google Scholar
  4. Csanady, G. T. (1982): Circulation in the Coastal Ocean. D. Reidel, 279 pp.Google Scholar
  5. Davis, A. M. and J. Xing (2006): Effects of topography and mixing parameterization upon the circulation in cold water domes. J. Geophys. Res., 111, C03018, doi:10.1029/2005JC003066.CrossRefGoogle Scholar
  6. Flather, R. A. (1976): A tidal model of the northwest European continental shelf. Mem. Soc. Roy. Sci. Liege, 10, 141–164.Google Scholar
  7. Fujiwara, M., K. Ohashi and T. Fujiwara (1997): Simulation of residual flow in Kii Channel in August by using a diagnostic numerical model. Proceedings of Coastal Engineering, 44, 411–415 (in Japanese).Google Scholar
  8. Fujiwara, T. and T. Higo (1986): Wind effects on the through flow and material transport in the Seto Inland Sea. Bull. Coast. Oceanogr., 23, 109–119 (in Japanes).Google Scholar
  9. Fujiwara, T., T. Higo and Y. Takasugi (1989): On the residual circulations, tidal flows, and eddies in Osaka Bay. Proc. 36th Conf. on Coastal Engineering, JSCE, 209–213 (in Japanese).Google Scholar
  10. Fujiwara, T., H. Nakata and K. Nakatsuji (1994): Tidal-jet and vortex-pair driving of the residual circulation in a tidal estuary. Cont. Shelf Res., 14, 1025–1038.CrossRefGoogle Scholar
  11. Guo, X. (2005): Toward prediction of marine environment in the Seto Inland Sea, Japan. Monthly Kaiyo, 37, 289–293 (in Japanese).Google Scholar
  12. Guo, X., H. Hukuda, Y. Miyazawa and T. Yamagata (2003): A triply nested ocean model for simulating the Kuroshio—Roles of horizontal resolution on JEBAR. J. Phys. Oceanogr., 33, 146–169.CrossRefGoogle Scholar
  13. Guo, X., A. Futamura and H. Takeoka (2004): Residual currents in a semi-enclosed bay of the Seto Inland Sea, Japan. J. Goephys. Res., 109, C12008, doi:10.1029/2003JC002203.CrossRefGoogle Scholar
  14. Guo, X., M. Haramoto, P.-H. Chang, A. Futamura and H. Takeoka (2006): Competition of a local cyclonic eddy and an estuarine circulation in the Iyo-nada, Seto Inland Sea, Japan. Proceedings of the 13th International Biennial Conference on Physics of Estuaries and Coastal Seas, Astoria, U.S.A.Google Scholar
  15. Hill, A. E. (1994): Observations of a cyclonic gyre in the western Irish Sea. Cont. Shelf Res., 14, 479–490.CrossRefGoogle Scholar
  16. Hill, A. E. (1996): Spin-down and the dynamics of dense pool gyres in shallow seas. J. Mar. Res., 54, 1–17.CrossRefGoogle Scholar
  17. Hirose, N., H.-C. Lee and J.-H. Yoon (1999): Surface heat flux in the East China Sea and the Yellow Sea. J. Phys. Oceanogr., 29, 401–417.CrossRefGoogle Scholar
  18. Horsburgh, K. J. and A. E. Hill (2003): A three-dimensional model of density-driven circulation in the Irish Sea. J. Phys. Oceanogr., 33, 343–365.CrossRefGoogle Scholar
  19. Imasato, N., T. Awaji and H. Kunishi (1980): Tidal exchange through Naruto, Akashi and Kitan Straits. J. Oceanogr. Soc. Japan, 36, 151–162.CrossRefGoogle Scholar
  20. Kamizono, M., M. Yoshida, M. Ishida and T. Miita (1991): Surface current investigation in Suo-Nada using drift bottles. Bull. Coast. Oceanogr., 29, 97–103 (in Japanese with English abstract).Google Scholar
  21. Kasai, A., T. Yamada and H. Takeda (2007): Flow structure and hypoxia in Hiuchi-Nada, Seto Inland Sea, Japan. Estuar., Coast. Shelf Sci., 71, 210–217.CrossRefGoogle Scholar
  22. Kim, Y. S. and R. Kimura (1995): Error evaluation of the bulk aerodynamic method for estimating heat flux over the sea. J. Korean Meteor. Soc., 31, 399–413.Google Scholar
  23. Kobayashi, S., J. H. Simpson, T. Fujiwara and K. J. Horsburgh (2006): Tidal stirring and its impact on water column stability and property distributions in a semi-enclosed shelf sea (Seto Inland Sea, Japan). Cont. Shelf Res., 26, 1295–1306.CrossRefGoogle Scholar
  24. Large, W. G. and S. Pond (1981): Open ocean momentum flux measurement in moderate to strong winds. J. Phys. Oceanogr., 11, 323–336.CrossRefGoogle Scholar
  25. Matsumoto, K., T. Takanezawa and M. Ooe (2000): Ocean tide models developed by assimilating TOPEX/POSEIDON altimeter data in to hydrodynamical model: a global model and a regional model around Japan. J. Oceanogr., 56, 567–581.CrossRefGoogle Scholar
  26. Mellor, G. L. and T. Yamada (1982): Development of a turbulence closure model for geophysical fluid problems. Rev. Geophys., 20, 851–875.CrossRefGoogle Scholar
  27. Murakami, M., Y. Oonishi, A. Harashima and H. Kunishi (1978): A numerical simulation on the distribution of water temperature and salinity in the Seto Inland Sea. Bull. Coast. Oceanogr., 15, 130–137.Google Scholar
  28. Murakami, M., Y. Oonishi and H. Kunishi (1985): A numerical simulation of the distribution of water temperature and salinity in the Seto Inland Sea. J. Oceanogr. Soc. Japan, 41, 213–244.CrossRefGoogle Scholar
  29. Ochi, T. and H. Takeoka (1986): The anoxic water mass in Hiuchi Nada. Part I. Distribution of the anoxic water mass. J. Oceanogr. Soc. Japan, 42, 1–11.CrossRefGoogle Scholar
  30. Oonishi, Y. (1977): A numerical study on the tidal residual flow. J. Oceanogr. Soc. Japan, 33, 207–218.CrossRefGoogle Scholar
  31. Oonishi, Y. (1979): A numerical experiment on the constant flow in Osaka Bay. Proc. 26th Conf. on Coastal Engineering, JSCE, 514–518 (in Japanese).Google Scholar
  32. Smagorinsky, J. S. (1963): General circulation experiments with the primitive equations. I. The basic experiment. Mon. Wea. Rev., 91, 99–164.CrossRefGoogle Scholar
  33. Takeoka, H. (1985): Density stratification in the Seto Inland Sea. Umi to Sora, 60, 145–152 (in Japanese).Google Scholar
  34. Takeoka, H. (2002): Progress in Seto Inland Sea research. J. Oceanogr., 58, 93–107.CrossRefGoogle Scholar
  35. Tawara, S. (1986): Studies on the characteristics of oceanographic condition in relation to fishing condition in the shallow coastal waters. J. Shimonoseki Univ. Fisheries, 34(1), 1–103.Google Scholar
  36. Xing, J. and A. M. Davis (2001): A three-dimensional baroclinic model of the Irish Sea: Formation of the thermal fronts and associated circulation. J. Phys. Oceanogr., 31, 94–114.CrossRefGoogle Scholar
  37. Yanagi, T. and H. Higuchi (1979): Constant flows in the Seto Inland Sea. Bull. Coast. Oceanogr., 16, 123–127.Google Scholar
  38. Yanagi, T. and S. Igawa (1992): Diagnostic model in the coastal sea—an application to Suo-Nada and Iyo-Nada. Bull. Coast. Oceanogr. 30, 108–115 (in Japanese with English abstract).Google Scholar
  39. Yanagi, T. and S. Okada (1993): Tidal fronts in the Seto Inland Sea. Mem. Fac. Eng. Ehime Univ., 12(4), 337–343.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.National Institute of Meteorological ResearchSeoulKorea
  2. 2.Center for Marine Environmental StudiesEhime UniversityBunkyo-cho, MatsuyamaJapan

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