Abstract
Water plumes, 20 km long or less, identified by low temperature, high salinity and high nutrient concentrations, were observed on the eastern side of Izu Islands where the Kuroshio Current or its branch flowed eastward. The T-S diagrams and the vertical profiles of oceanographic variables indicated that the water plumes resulted from the upwelling of subsurface water. A newly formed plume, characterized by a sharp temperature front and high nutrient concentrations, contained less chlorophyll than did old plumes. It is suggested that the upwelling plumes are maintained for a period long enough to allow luxuriant growth of phytoplankton.
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Armstrong, F.A.J., C.R. Stears andJ.D.H. Strickland (1967): The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipments. Deep-Sea Res.,14, 381–389.
Fukasawa, M. (1978): Observations on temperature around Izu Ô-shima Island. Preprint Ann. Fall Meeting Oceanogr. Soc, Japan, 31–43 (in Japanese).
Haury, L. R., J.A. McGowan andP.H. Wiebe (1979): Patterns and processes in the time-space scales of plankton distributions. Oceanogr. Mar. Biol. Ann. Rev.,17, 227–327.
Kishi, M. (1976): Upwelling along the east coast of the Izu Peninsula (I). Umi to Sora,51, 105–113.
Kishi, M. (1977): Upwelling along the east coast of the Izu Peninsula (II). Umi to Sora,52, 59–65.
Otsuka, K., K. Cho, N. Matsuura andS. Hori (1979): On the oceanographic conditions around Izu Oshima Island under the influence of the Kuroshio meander. J. Tokyo Univ. Fish.,65, 127–138.
Raymont, J.E.G. (1963): Plankton and Productivity in the Oceans, Pergamon Press, Oxford, 630 pp.
Strickland, J.D.H. andT.R. Parsons (1972): A Practical Handbook of Seawater Analysis. Fish. Res. Bd. Can. Bull. No. 167. 311 pp.
Tokyo Metropolitan Fisheries Experimental Station, Oshima Branch (1978): Summary of oceanographic conditions off the south of Honshu Island. No. 33. 1 p.
Tokyo Metropolitan Fisheries Experimental Station, Oshima Branch (1979): Summary of oceanographic conditions off the south of Honshu Island. No. 1. 1 p.
Uda, M. (1937): Results of hydrographical investigations in the Sagami Bay in connection with the “Buri” (Seriola quinqueradiata T. & S.) fishing. J. Imp. Fish. Exp. Sta.,8(61), 1–50 (in Japanese with English abstract)
Uda, M. (1959): Oceanographic seminars. Fish. Res. Bd. Can., Man. Rept. Ser. (Oceanogr. Limnol.), No. 51, 110 pp.
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Takahashi, M., Koike, I., Ishimaru, T. et al. Upwelling plumes in sagami bay and adjacent water around the Izu Islands, Japan. Journal of the Oceanographical Society of Japan 36, 209–216 (1980). https://doi.org/10.1007/BF02070334
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DOI: https://doi.org/10.1007/BF02070334