三沙湾夏、冬季节温、盐分布特征及影响因素分析

发布时间：2018-01-25 02:19

本文关键词： 三沙湾温度盐度季节变化　出处：《厦门大学学报(自然科学版)》2016年03期 　论文类型：期刊论文

【摘要】：利用2012年8月和2013年1月在三沙湾开展的2个航次调查所获得的温度、盐度资料,分析三沙湾夏季和冬季温度、盐度的水平和垂直分布特征.结果表明:三沙湾夏、冬季节在湾口均为低温高盐水、湾顶为高温低盐水,这主要是受陆地径流的影响导致的;但是湾顶与湾口的温、盐差异在冬季相比夏季要小很多,温度差在冬季变小主要是受太阳辐射的季节差异导致的,而盐度差变小则是由于浙闽沿岸水在冬季向南转向经潮流进入三沙湾导致的;温、盐的垂直分布图表明三沙湾冬季海水混合相对均匀,混合层深度比夏季要深,这与季风强度的季节差异有关.
[Abstract]:Based on the temperature and salinity data of two voyages conducted in Sansha Bay in August 2012 and January 2013, the summer and winter temperatures in Sansha Bay were analyzed. The horizontal and vertical distribution characteristics of salinity. The results show that in summer and winter season, Sansha Bay is low temperature and high salt water in the mouth of the bay, and the top of the bay is high temperature and low salt water, which is mainly caused by land runoff. However, the difference of temperature and salt between the top of the bay and the mouth of the bay is much smaller in winter than in summer, and the temperature difference in winter is mainly caused by the seasonal difference of solar radiation. However, the difference in salinity is caused by the trend of the coastal water from Zhejiang and Fujian to the south in winter into Sansha Bay. The vertical distribution of temperature and salt shows that the mixing of sea water in Sansha Bay in winter is relatively uniform, and the depth of mixing layer is deeper than that in summer, which is related to the seasonal variation of monsoon intensity.
【作者单位】：近海海洋环境科学国家重点实验室(厦门大学);厦门大学环境与生态学院;
【基金】：国家海洋局公益项目(201205009-2)
【分类号】：P731
【正文快照】： 三沙湾位于福建省东北部沿海,是宁德市境内的一个封闭型海湾,主要由官井洋、东吾洋、三都澳、盐田港等次级海湾组成(图1).三沙湾内水域开阔,海湾总面积(扣除岛屿)约675km2,但其仅在海湾东南部有一峡口(即东冲口)与外海相连,且口门宽仅约3km,因此历来是避风良港[1-2].近年来由

【相似文献】