Abstract
A multilevel model was applied to the calculation of permanent current and density variation in Tokyo Bay, and the change of the state of stratification and the accompanying current field was simulated. In the numerical simulation, the observed field data such as wind conditions and atmospheric temperature were used as input to the calculation, and the results were compared with the observed values of currents, salinity, and sea temperature. Comparison of simulation results and observed data revealed that the numerical simulation could describe well the current and density field governed by wind under stratified conditions. In particular, the long-term variations of the vertical structure of salinity and temperature from summer to autumn could be predicted qualitatively, as could the long-term variations of the vertical structure of salinity and temperature from summer to autumn. Additionally, the effects of boundary conditions on the results of numerical simulations were examined. As a result, it was clarified that the simulation results of salinity stratification were strongly affected by the boundary conditions such as river discharge and the vertical structure of salinity at the open boundary adjacent to the outer ocean.
Similar content being viewed by others
References
Kuramoto T, Nakata K (1991) Numerical simulation of the formation and movement of an oxygen deficient water mass in Tokyo Bay (in Japanese). Bull Coastal Oceanogr 28-2:140–151
Shibayama T, Leung PK (1992) Multi-level model for hydrodynamic circulation and dispersion process in bays. Coastal Eng Jpn, JSCE 35-1:49–66
Nakatsuji K, Yamami S, Sueyoshi T et al (1992) Numerical experiments on permanent current in Osaka Bay (in Japanese). Proc Coastal Eng, JSCE 39:906–910
Murakami M, Oonishi Y, Kunishi H (1985) A numerical simulation of the distribution of water temperature and salinity in the Seto inland sea. J Oceanogr Soc Jpn 41:213–224
Kondo S (1990) Thermal balance at the surface of the sea near Japan (in Japanese). Coastal observations of Japan, 2nd series. Tokai University Press, Tokyo, pp 89–100
Nakatsuji K, Huh JY, Murota A (1991) Numerical experiments of three-dimensional buoyant surface discharges (in Japanese). J Hydraul Coastal Environ Eng 434-2-16:19–28
Sato S, Ueda K (1992) Development of a multi-level model considering the change of wind field and its application to currents in Tokyo Bay (in Japanese). Proc Coastal Eng, JSCE 39-1:251–255
Blumberg AF, Mellor GL (1987) A description of a three-dimensional coastal ocean circulation model. Coastal Estuarine Sci 4:1–16
Fujino M, Tabeta S (1991) Numerical simulation of tidal currents by means of multi-level model. J Fac Eng, Univ Tokyo XLI-2:257–294
Sato S (1989) On wind-driven circulations in Tokyo Bay: the winter season (in Japanese). Tech Rep Hydrogr Dep, Marit Saf Agency Jpn 8:1–14
Odamaki M, Sato S, Matsushima H et al (1991) Observation of coastal circulation of Tokyo Bay in summer: Prediction of wind-driven currents and mass transport in an enclosed sea (in Japanese). Tech Rep Hydrogr Dep, Marit Saf Agency Jpn 9: 67–76
Author information
Authors and Affiliations
About this article
Cite this article
Tabeta, S., Fujino, M. Comparison of simulation results and field data on currents and density in Tokyo Bay. J Mar Sci Technol 1, 94–104 (1996). https://doi.org/10.1007/BF02391165
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02391165