摘要
通过对大亚湾及其周边海区冬、夏两季大潮、小潮期间多站位的海流观测,分析了调查海区潮流、余流的分布特征和季节变化.结果显示:大亚湾及周边海区较小的潮差导致冬、夏两季整体实测海流较弱,夏季潮差和潮流略大于冬季.大潮期间部分站位表现出明显的潮流涨落特征,但小潮期间在余流和其他因素的掩盖下涨潮流和落潮流不明显.该海区潮流振幅最大的分潮为M2分潮,而K1、O1、S2分潮振幅较小,所有站位的潮流性质整体表现为不正规半日潮流,潮流运动形式主要表现为往复流.冬季大亚湾湾内的余流虽然较弱,但是余流流向体现出的反气旋结构明显且稳定.大亚湾湾口和惠东以东沿岸海区的余流受季节和天气过程影响明显,夏季期间台风或其他因素造成的天气过程可以使余流整体转向.
Based on in situ current observations at multiple stations in the Daya Bay and its surrounding area in summer and winter during spring and neap tides,we analyzed the distribution characteristics and seasonal variation of the tidal current and residual current.The relatively small tidal amplitude of sea level leads to weak tidal currents in the study area.The observed current is slightly stronger in summer than that in winter.During spring tides,some of the stations have clear rising and ebbing currents,while during neap tides,the rising and ebbing currents are not noticeable due to the residual current and other factors.The M2 tidal component has larger amplitude than K1,O1 and S2 tidal components.Most of the stations exhibit irregular semi-diurnal tides and alternating currents.The residual current in winter is relatively weak,while it has a stable anti-cyclonic structure.The residual current at the mouth of the Daya Bay and east of Huizhou coastal areas is obviously influenced by the seasonal variation and weather processes.Typhoon passages and other weather processes in summer could reverse the direction of the residual current.
作者
孙振宇
陈照章
杨龙奇
朱佳
SUN Zhenyu;CHEN Zhaozhang;YANG Longqi;ZHU Jia(State Key Laboratory of Marine and Environmental Science,College of Ocean and Earth Sciences,Xiamen University,Xiamen 361102,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 519000,China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第2期278-286,共9页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金(41776027)
惠州市海洋渔业资源环境调查项目(F2017-01-1)
厦门大学校长基金(20720180103)。
关键词
大亚湾
潮流
余流
季节变化
Daya Bay
tidal current
residual current
seasonal variation
作者简介
通信作者:孙振宇,sunzy@xmu.edu.cn。
