基于高频地波雷达资料的海南中东部近海表层海流特征
周旋(1980—), 男, 河南省信阳市人, 博士, 高级工程师, 主要从事海洋遥感应用研究。email: |
Copy editor: 殷波
收稿日期: 2020-05-08
要求修回日期: 2020-08-11
网络出版日期: 2020-08-15
基金资助
国家重点研发计划(2017YFB0502800)
版权
Surface current characteristics in the central eastern sea area of Hainan Island detected by high-frequency surface wave radar
Copy editor: YIN Bo
Received date: 2020-05-08
Request revised date: 2020-08-11
Online published: 2020-08-15
Supported by
National Key Research and Development Project(2017YFB0502800)
Copyright
利用海南中东部近海海域高频地波雷达观测得到的2019年4月—2020年3月表层海流资料进行潮流调和分析和余流分析。结果表明: 海南中东部近海海域以不规则半日潮流为主, 半日分潮M2和S2以往复流为主, 全日分潮O1、K1以顺时针旋转流为主, M2、S2、O1、K1分潮最大潮流流速的比为1 : 0.51 : 0.60 : 0.65, M2为最主要分潮。最大可能潮流流速分布从西南方向向东北方向逐步增大, 最大值为35cm·s-1。余流受东亚季风影响较大, 季节变化特征显著, 呈夏季形态(6月—8月)、冬季形态(9月—次年2月)和过渡形态(3月—5月)。夏季形态流向东北, 平均流速29cm·s-1; 冬季形态持续时间最长, 流向西南, 平均流速36cm·s-1, 大于夏季形态; 过渡形态为冬季形态向夏季形态的转变期, 流向分布较复杂, 平均流速13cm·s-1, 明显小于夏季和冬季形态。从全年来看, 西南向流动的时间最长、流速最大, 海南中东部表层海水物质输运自东北向西南。
周旋 , 李自强 , 安玉柱 , 张耀文 , 杨晓峰 . 基于高频地波雷达资料的海南中东部近海表层海流特征[J]. 热带海洋学报, 2021 , 40(2) : 103 -111 . DOI: 10.11978/2020044
Based on ocean surface currents observed by the High Frequency Ground Wave Radars (HFSWRs) from April 2019 to May 2020, the characteristics of tidal and residual currents in the central eastern sea area of Hainan Island were studied. The results show that the tide in the central eastern sea area of Hainan Island mainly belongs to the irregular semidiurnal tide. The movements of the semidiurnal tidal currents M2 and S2 are mainly in the form of reciprocating current, and the movements of the diurnal tidal currents O1 and K1 are mainly the form of clockwise rotary current. The spatially averaged amplitudes of M2, S2, O1, and K1 have a ratio of 1 : 0.51 : 0.60 : 0.65; and the semidiurnal tidal current M2 is dominant among the four tidal current constituents. The probable maximum current velocities increase gradually from southwest to northeast, and the maximum is 35 cm·s-1. Due to the influence of the East Asian monsoon, the residual currents have significant seasonal variation, with summer (from June to August), winter (from September to February of the following year) and transitional (from March to May) types. For the summer type, the directions of the residual currents are basically northeast, and the average velocity is 29 cm·s-1. The residual currents of the winter type flow toward the southwest, and the average velocity is 36 cm·s-1. Note that the residual currents of the winter type are greater than those of the summer type. The residual currents of the transitional type have complex directions, and the average velocity of 13 cm·s-1. Overall, the southwest residual currents have the largest velocity and last the longest time during the year, and therefore the material transport in surface sea water is from northeast to southwest in the central eastern sea area of Hainan Island.
图5 半日分潮M2、S2的潮流椭圆及运动形式a. M2分潮潮流椭圆; b. M2分潮旋转率; c. S2分潮潮流椭圆; d. S2分潮旋转率。审图号: 琼S(2019)054 Fig. 5 Spatial distributions of tidal current ellipses and rotating rates for the semidiurnal tidal currents M2 and S2 |
[1] |
陈江, 吴雄斌, 文必洋, 等, 2005. 采用便携式天线的近海海洋表面流探测[J]. 武汉大学学报(理学版), 51(1):105-108.
|
[2] |
胡冬, 陈希, 张守业, 等, 2015. 南海东沙群岛南侧海域的潮余流特征[J]. 解放军理工大学学报(自然科学版), 16(4):368-373.
|
[3] |
吉会峰, 李用留, 高清清, 等, 2017. 基于地波雷达观测资料的烂沙洋海域表层海流特征研究[J]. 海洋预报, 34(5):64-73.
|
[4] |
经志友, 齐义泉, 华祖林, 2008. 南海北部陆架区夏季上升流数值研究[J]. 热带海洋学报, 27(3):1-8.
|
[5] |
刘科峰, 蒋国荣, 陈奕德, 等, 2014. 基于卫星漂流浮标的南海表层海流观测分析[J]. 热带海洋学报, 33(5):13-21.
|
[6] |
卢燕, 李泽文, 李淑江, 等, 2017. 海南万宁近岸余流特征分析[J]. 海洋科学进展, 35(1):53-61.
|
[7] |
沈志奔, 2014. 高频地波雷达海流应用研究[D]. 武汉: 武汉大学.
|
[8] |
孙湘平, 2006. 中国近海区域海洋[M]. 北京: 海洋出版社 (in Chinese).
|
[9] |
吴雄斌, 杨绍麟, 程丰, 等, 2003. 高频地波雷达东海海洋表面矢量流探测试验[J]. 地球物理学报, 46(3):340-346.
|
[10] |
谢玲玲, 张书文, 赵辉, 2012. 琼东上升流研究概述[J]. 热带海洋学报, 31(4):35-41.
|
[11] |
许金电, 蔡尚湛, 宣莉莉, 等, 2013. 2006年夏季琼东、粤西沿岸上升流研究[J]. 海洋学报, 35(4):11-18.
|
[12] |
杨华, 吉会峰, 高清清, 等, 2019. 高频地波雷达观测的苏北辐射沙洲南部海域夏季表层海流特征[J]. 海洋学报, 41(5):1-11.
|
[13] |
中华人民共和国交通部, 1988. 港口工程技术规范(1987)上卷[M]. 北京: 人民交通出版社: 393-399(in Chinese).
|
[14] |
朱大勇, 李立, 郭小钢, 2013. 台湾海峡南部浅滩以西表层流场的季节与年际变化[J]. 科学通报, 58(26):2737-2744.
|
[15] |
朱大勇, 李炎, 郭小钢, 等, 2013. 高频地波雷达海流验证研究述评[J]. 热带海洋学报, 32(4):1-7.
|
[16] |
朱怀鑫, 俎婷婷, 李健, 等, 2018. 基于高频地波雷达观测的粤西近海潮流潮能分析[J]. 热带海洋学报, 37(5):25-32.
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
/
〈 | 〉 |