台湾海峡中北部夏季溶解氧饱和度分布与上升流的关系

Summer upwelling and saturation dissolved oxygen distribution in the Central and Northern Taiwan Strait

本文据台湾海峡中北部1983年5月至1984年5月、1987年7,8月和1988年5～7月调查资料,讨论了该海域夏季溶解氧饱和度分布特征及其与上升流的关系,结果表明该海区夏季上升流的中心位置经常出现于海坛岛北侧至湄洲岛一带海域,西南季风是该区上升流产生的主要动力因子,该区上升流平均流速为4.4×10^(-3)cm/s。

Based on the survey data from the middle and Northern Taiwan Strait in the periods of May 1983 to May 1984, July and August of 1987 and May to July of 1988, this paper reports,the distribution of local oversaturated and undersatutrated dissolved oxygen areas in the surface layer and the distribution of undersatutrated dissolved oxygen in the middle and lower layers in the Western Taiwan Strait. The distribution characteristics of dissolved oxygen in this area may be an evidence of the existence of the coastal upwelling. This paper also discusses the location of the core of the upwelling, which always occurs in waters from the north of the Haitang Island to the Meizhou Island, based on the distribution characteristics of summer saturation dissolved oxygen. The southwest mosoon is the major dynamics for the occurance of the upwelling. It is estimated that the average flow velocity of the upwelling is 4. 4×10^(-3)cm/s.