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本文报道了1991年8月浙江近海上升流调查海区(27°30′—30°30′N,124°00′E以西)赤潮现场观测的结果。文中通过赤潮发生前期的水文和气象以及叶绿素(Chlorophyll)和夜光藻(Noctiluca scintillans)大面观测结果的分析,阐明了该海区所表现出来的某些水文学和生态学方面的特点,并对赤潮生物的组成特点作了描述,通过赤潮期间(临近期、暴发期和消亡期)的水温和叶绿素含量的垂直分布,并结合气象要素的比较分析,阐明了水体稳定度与赤潮发生的内在关系,从而对赤潮的成因作初步探讨,
This paper reports the results of field observations of the red tide in the sea area surveyed by Zhejiang offshore upwelling in August 1991 (27 ° 30’-30 ° 30’N, west of 124 ° 00’E). Based on the analysis of hydrology and meteorology in the early stage of red tide occurrence and the observation results of chlorophyll and noctiluca scintillans, some hydrological and ecological characteristics of the area were clarified. The characteristics of organisms were described. Through the vertical distribution of water temperature and chlorophyll content during the period of red tide (near period, outbreak period and extinction period), combined with the comparative analysis of meteorological elements, the internal relationship between water stability and occurrence of red tide was clarified. In this way, the causes of red tide are discussed briefly.