三门湾外海的潮汐和潮流特征

海洋学研究 ›› 2012, Vol. 30 ›› Issue (2): 27-35.

三门湾外海的潮汐和潮流特征

师鹏飞, 许东峰^*, 王俊, 徐鸣泉

卫星海洋环境动力学国家重点实验室,国家海洋局第二海洋研究所,浙江杭州 310012

收稿日期:2011-05-12 修回日期:2011-06-15 出版日期:2012-06-15 发布日期:2023-04-24
通讯作者: * 许东峰,研究员,E-mail:xudongfengyhcn@yahoo.com.cn
作者简介:师鹏飞(1985-),男,山西运城市人,硕士研究生,主要从事海洋环流与海气相互作用方面的研究。E-mail:spfeng@sio.org.cn
基金资助:
国家重点基础研究发展计划资助项目(2007CB816001);国家自然科学基金资助项目(40676008);“908”专项资助项目(908-01-BC06,908-01-BC07);国家海洋公益性行业科研专项经费资助项目(200805084)

Characteristics of the tide and tidal current off the Sanmen Bay

SHI Peng-fei, XU Dong-feng^*, WANG Jun, XU Ming-quan

State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, SOA, Hangzhou 310012, China

Received:2011-05-12 Revised:2011-06-15 Online:2012-06-15 Published:2023-04-24

摘要/Abstract

摘要： 针对2009年5月-7月三门湾外海D8和D9两个站位布放的防渔网底拖锚系ADCP连续观测获取的流速资料和水位资料,采用调和分析和功率谱分析等研究方法,分析了该海域的潮汐和潮流特征,结果显示:该海域潮汐类型为正规半日潮,近岸的D9站浅水分潮比离岸的D8站显著,潮汐呈现出回归潮特征。三门湾外海潮流半日分潮能量最大, 各层潮流呈现出旋转流性质;椭圆率随水深增加;M₂、K₁分潮流最大流速均在次表层最大;最大分潮流速发生时刻底层比中、上层提前约半小时;该海域潮流的半日分潮流以正压为主,全日分潮流则表现出较为明显的斜压性。

关键词: 调和分析, 潮汐, 潮流

Abstract: Based on the successive data of sea level and current velocity profiles obtained by two bottom-moored Acoustic Doppler Current Profilers (ADCP) from May to July of 2009 at D8 and D9 stations off the Sanmen Bay, the characteristics of tide and tidal current were investigated with power spectral analysis and harmonic analysis. The results show that the tide is regular semi-diurnal tide, shallow water tides at inshore area of D9 station is much more significant than that at offshore area of D8 station, and that the tide presents the characteristics of tropical tide. The semi-diurnal tidal currents off the Sanmen Bay are the strongest constituents, the tidal currents at different layers have the feature of rotary currents with the ellipticity increasing with depth, and the maximum velocity of both M₂ and K₁ constituents appears in subsurface. The occurrence of the maximum current in the bottom layer is about 30 minutes ahead of that in the middle and surface layers. The semidiurnal constituent in this area is mainly barotropic, while the diurnal one is of baroclinic feature.

Key words: harmonic analysis, tide, tidal current

中图分类号:

P731.2

师鹏飞, 许东峰, 王俊, 徐鸣泉. 三门湾外海的潮汐和潮流特征[J]. 海洋学研究, 2012, 30(2): 27-35.

SHI Peng-fei, XU Dong-feng, WANG Jun, XU Ming-quan. Characteristics of the tide and tidal current off the Sanmen Bay[J]. Journal of Marine Sciences, 2012, 30(2): 27-35.

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