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Oceanic Conditions in the Western Tropical Pacific in the Summer of 1988 1988年夏期 西部熱帯太平洋に於ける海況 YUWAKI, Yasutaka 湯脇, 泰隆 NISHI, Toru 西, 徹 MASUMITSU, Sunao 益滿, 侃 HIGASHI, Masataka 東, 政能 open access Oceanic condition Western Tropical Pacific Equatorial Current Oceanographic observations using a CTD system were made in the Western Tropical Pacific in the summer of 1988. The first oceanographic section was made along 133°E from 20°N to 10°N from June 13-18th, and the second one from 09°N, 138°E to 00°, 149°E from June 25-28th. The warm surface water having a value of above 29°C was presented over the whole sea surface. The thermocline with the maximum vertical gradient having a value of 0.17°C/m was the shallowest near 09°N. The low salinity lower than 34.50% was presented in the surface mixed layer between 16°N and 02°N. The conspicuous transitions were formed on each side of the north and south of the low salinity water. The North Equatorial Current was recognized on the north side of 08°N ; the South Equatorial Current near the Equator ; and the North Equatorial Countercurrent in the region between 08°N and 01°N. Several step-like features and inversion layers were presented in the thermocline at the Equator. The lateral advection of water masses in the surface layer was well developed near the Equator. 鹿児島大学 Kagoshima University 1988-12-25 eng departmental bulletin paper VoR http://hdl.handle.net/10232/13373 https://ir.kagoshima-u.ac.jp/records/764 0453087X AN00040498 鹿児島大学水産学部紀要 Memoirs of Faculty of Fisheries Kagoshima University 37 97 109 https://ir.kagoshima-u.ac.jp/record/764/files/AN00040498_v37_p97-109.pdf application/pdf 1.3 MB 2016-10-27 1988-12-25