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本文根据1975月7月温盐资料,证实了在渔场存在多单元上升流,兄弟屿和南澎列岛附近分别是沿岸和外海上升流最强海区。 我们认为在外斜—外深一带出现高营养盐的愿因是,在上升流期,由于垂直外海环流环演变,而导致南海底层冷水上升与爬升(或涌升)多次交替现象所产生的结果。 在埃尔尼诺年灯围产量锐减,在渔场夏季只出现一单元上升流,且上升流弱(除1965—1966年8—9月外),反之,在非埃尔尼诺年(除印度发生干旱和非埃尔尼诺头一年外)灯围产量高或较高,夏季都出现多单元上升流,且上升流强。此外还阐明了灯围产量与多单元上升流时间具有相关性,而与其次数具有逆相关性。
According to the July 1975 thermohaline data, this paper confirms the presence of multi-unit upwelling in fisheries. Near Brother Island and South Penghu Islands, it is the strongest sea area where the upwelling of the coast and the offshore are respectively. We think that the reason for the emergence of high nutrient salts in the outer oblique-outer deep zone is that in the rising phase, the result of multiple alternations of rising and climbing (or ascending) cold water in the SCS due to the evolution of the vertical OCEG, . In the El Nino year, the perimeter dropped sharply. In the summer, only one unit of upwelling appeared in the fishing grounds and the upwelling was weak (except from August to September 1965-1966). On the contrary, in the non-El Niño years Droughts in India and non-El Niño in the first year of the year) either high or high lamp yield, multi-unit upwelling in summer and strong updraft. In addition, it is clarified that the lamp envelope output is correlated with the rising time of multi-unit flow, and has an inverse correlation with the number of times.