福建中南部沿岸海域潮汐特征分析  

Characteristics analysis of tide along Fujian mid-south coastal waters

作　　者：付翔[1] 吴少华[1] 李涛[1] 侯京明[1] 刘秋兴[1] 

机构地区：[1]国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室,北京100081

出　　处：《应用海洋学学报》2013年第2期164-170,共7页Journal of Applied Oceanography

基　　金：国家海洋局海洋公益性行业科研专项资助项目(200905013)

摘　　要：利用2004、2007、2010年在福建中南部沿海长期验潮站和临时验潮站获取的实测逐时潮位资料,采用基于最小二乘原理的潮汐调和分析方法,分析了福建中南部沿岸海域18个验潮站的潮汐调和常数,并根据调和常数分析了沿岸海域潮汐特征.结果表明:福建中南部沿岸海域以向南传播的半日分潮为主,传播至浮头湾以南海域后衰减明显,对应平潭至浮头湾海域的潮汐性质为半日潮,古雷半岛以南海域为不规则半日潮混合潮;福建中南部沿岸海域自北部平潭向南至诏安,平均海平面升高约25 cm,潮差减小超过3 m,平均大潮差与平均小潮差之差也减小2 m左右,理论高潮位降低约1.5 m,而理论低潮位升高约2 m,潮时推迟约2 h.Based on the hourly observed water level data in 2004, 2007 and 2010, this paper identified the harmon ic constants of 18 points along Fujian midsouth coastal waters with least squares tidal harmonic analysis, and ana lyzed the tidal characteristics along the coastal waters. The result shows semidiurnal constituents are dominant near Fujian midsouth coastal waters, and their amplitude attenuated evidently from Futou Bay southward, as well as di urnal constituents＇ amplitude almost no attenuation. The corresponding types of tide are regular semidiurnal tide from Pingtan to Futou Bay and irregular semidiurnal mixed tide from south of Futou Bay. From north to south of Fu jian midsouth coastal waters, the mean sea level raised 25 centimeters, the tidal range reduced over 3 meters, and the difference in height between mean spring range and mean neap range reduced about 2 meters; the theoretical high water level lowered about 1.5 meters and the theoretical low water level raised about 2 meters ; from Jiuzhen Bay southward, the theoretical low water level raised faster than the lowering of the theoretical high water level. High water interval was delayed by 2 hours and more in Jiuzhen Bay.

关 键 词：物理海洋学 福建沿岸海域 潮汐类型 潮汐特征 理论高低潮 

分 类 号：R731[医药卫生—肿瘤]