Abstract
A continuous observation system of ship drift of ferry boats was developed using Loran C, ship direction, ship speed and wind velocity measurement. A formula to estimate the wind-driven lateral drift of the boat is proposed, and a measuring system of the surface current is described, including a discussions on its usefullness to monitor day-to-day variations of the circulation patterns in the coastal boundary regions of the Kuroshio.
This system was applied to observe variations of the circulation in the Kumano-nada, and Enshu-nada Seas south of Japan. Some preliminary results were obtained by using this system as well as other methods. This work focuses on the behavior of warm eddies in the Kumano-nada Sea. The surface current patterns that include these phenomena obtained by the use of the ship drift show good correspondence with currents and thermal structures observed with GEK, CTD, moored current meters and satellite thermal images.
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Fukasawa, M. and T. Teramoto (1986): Characteristics of deep current off Cape Shiono-misaki before and after formation of the large meander of the Kuroshio in 1981. J. Oceanogr. Soc. Japan.42, 53–68.
Hamatani, M. and M. Fukasawa (1986): Tidal current in the south of Japan. Mar. Sci.,18, 413–418 (in Japanese).
Ishizaki, H., O. Asaoka, S. Konaga and M. Takahashi (1983): A direct measurement of near-bottom current on the continental slope off Omaezaki, central Japan. Papers Meteorol. Geophys.,33, 257–268.
Kimura, S. and T. Sugimoto (1987): Short period fluctuations in oceanographic and fishing conditions in the coastal area of Kumano-nada Sea. Nippon Suisan Gakkaishi,53, 585–593.
Kobayashi, M., T. Sugimoto and T. Hirano (1984): Surface current patterns in the Kumano-nada and the Enshu-nada Seas for different types of the Kuroshio path based on GEK data-I. Bull. of Japanese Fisheries Oceanogr.,46, 18–26 (in Japanese).
Kobayashi, M., T. Sugimoto and T. Hirano (1986): Surface current patterns in the Kumano-nada and the Enshu-nada Seas for different types of the Kuroshio path based on GEK data-II. Bull. of Japanese Fisheries Oceanogr.,50, 5–14.
Kobayashi, M. and T. Sugimoto (1988): Correlation between the surface current patterns and the infrared thermal images by NOAA/AVHRR for different types of the Kuroshio paths in the Kumano-nada and Enshu-nada Seas (in Japanese, submitted to Sora to Umi).
Lee, T.N. and L.P. Atkinson (1983): Low-frequency current and temperature variability from Gulf stream frontal eddies and atmospheric forcing along the southeast U.S. Continental shelf. J. Geophys. Res.,88(C8), 4541–4567.
Matsuda, S. (1982): Results of deep current observation in the western part of Izu Ridge (3). Rep. on KER, Japan Marine Science and Technology Center,5, 139–154 (in Japanese).
Matsumura, S. (1986): Fluctuation of sea condition at the Kuroshio coastal side counter current area observed by NOAA-APT images. Sora to Umi,8, 27–37.
Mita, A. and R. Kumabe (1983): A strange phenomenon observed near the Kuroshio off Kii Peninsula in April, 1983. Rep. on KER, Japan Marine Science and Technology Center,6, 57–62 (in Japanese).
Nagata, Y. and K. Takeshita (1985): Variation of the sea surface temperature distribution across the Kuroshio in the Tokara Strait. J. Oceanogr. Soc. Japan,41, 141–156.
Nishi, K. and H. Kunishi (1985): Behavior of disturbances on the shelf in front of Shikoku.In: Ocean characteristics and their changes, ed. by K. Kajiura, Koseisha-Koseikaku, Tokyo, 212–220 (in Japanese).
Odamaki, M. (1986): A trial of the drifting route prediction in the coastal region. Bull. Coastal Oceanogr.,23, 148–154 (in Japanese).
Sugimoto, T. (1983): Observation of current structures in the coastal boundary regions of the Kuroshio. Rep. of Annual Meeting on Fisheries Resouces (G.S.K.), 92–104 (in Japanese).
Taft, B.A. (1972): Structure of Kuroshio south of Japan. J. Mar. Res.,36, 77–117.
Taira, K. and T. Teramoto (1981): Velocity fluctuations of the Kuroshio near the Izu-Ridge and their relationship to current path. Deep-Sea Res.,28A, 1187–1198.
Yoshioka, H. (1983): Sea surface temperature and its application to the investigation of oceanic condition in Kii-Channel. Umi to Sora,58, 37–51 (in Japanese).
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Sugimoto, T., Kobayashi, M. Current observation system using ship drift and its applications in Kumano-nada and Enshu-nada Seas. Journal of the Oceanographical Society of Japan 43, 363–376 (1987). https://doi.org/10.1007/BF02109289
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DOI: https://doi.org/10.1007/BF02109289