摘要
基于2015年7月和2016年7月的舟山海域观测所得温盐深(CTD)剖面仪和声学多普勒流速剖面仪(ADCP)数据,通过Kriging插值法、潮流准调和分析、相关性分析等方法对夏季舟山海域的水文特征及影响机制进行研究.结果表明,观测海域表层存在高温低盐中心,主要受到长江冲淡水的影响,且2016年长江冲淡水的势力强于2015年.2015年观测区域内未发现台湾暖流水,2016年观测海域出现高盐的台湾暖流水,影响了20 m以深海水的温盐性质.D3连续站的等温线和等盐线在一天内呈现出上凸或下凹的趋势,推测受到潮汐涨落的影响.该站M2分潮占主,S2分潮次之,O1和K1分潮在表层较强,至底层迅速衰减且发生明显转向,表层表现为不规则半日潮流,底层为规则半日潮流.该站的表层余流主要受到向东扩展的长江冲淡水影响,底层余流主要受到沿陆架向北爬坡的台湾暖流水影响,风对余流的驱动作用不明显.
Based on the conduccivity-temperature-depth(CTD)profiler and acoustic Doppler current profiler(ADCP)data obtained in the Zhoushan sea area in July of 2015 and 2016,the hydrological characteristics and regulating mechanismsin the Zhoushan sea area in summer were investigated with the Kriging interpolation,tidal quasi-harmonic analysis,correlation analysis and other methods.The results showed that there were high temperature and low salinity centers in the surface,which were mainly affected by the diluted water of the Yangtze River,and the diluted water of the Yangtze River in 2016 was stronger than in 2015.In 2015,we did not find any Taiwan warm current water in the observation area.However,in 2016,high-salinity Taiwan warm current water appeared,which affected the thermohaline properties at water depth deeper than 20 m in the Zhoushan sea area.The isotherm and isohaline at the D3 continuous station showed a trend of convex and concave in one day,which was presumably affected by tidal fluctuations.At this station,the M2 tidal component was predominant,while S2 tidal component took the second place.O1 and K1 tidal components were strong in the surface,but rapidly attenuatedin the bottom layer with the direction obvious changing.The surface layer showed irregular semidiurnal tidal currents,and the bottom layer showed regular semidiurnal tidal currents.The surface residual current was mainly affected by the eastward diluted water of the Yangtze River,and the bottom residual current was mainly affected by the Taiwan warm current,which flowed northward along the continental shelf.The driving effect of wind on the residual current was not obvious.
作者
范黎明
刘鹏霞
顾艳镇
刘子洲
李涛
于华明
FAN Liming;LIU Pengxia;GU Yanzhen;LIU Zizhou;LI Tao;YU Huaming(College of Ocean and Atmosphere Sciences,Ocean University of China,Qingdao 266100,China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第S01期1-11,共11页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金海洋科学基地野外实践能力提高项目(J1310037)。
关键词
舟山海域
温盐分布
连续站观测
长江冲淡水
台湾暖流水
Zhoushan sea area
thermohaline distribution
continuous station observation
Yangtze River diluted water
Taiwan warm current
作者简介
通讯作者:顾艳镇,guyanzhen@ouc.edu.cn。
