广西近岸西部海域的海流特征研究
发布时间：2018-07-29 13:07
【摘要】：利用广西近岸西部白龙半岛海域2011—2012年连续一年的观测资料和数值计算方法,研究了该海域潮流和余流的基本特征及变化规律,得出如下结论:白龙半岛海域潮汐为正规全日潮,但是潮流为不规则半日潮流;旋转谱分析显示,潮流逆时针旋转分量强于顺时针旋转分量,全日潮流的总能量小于半日潮流的能量;潮流振幅在夏季明显高于冬季,这是因为夏季北部湾北部的显著层结导致的较浅海域的内潮同样比较显著,并且表现为由表层向底层加强;另外,本文首次发现,经过北部湾的台风会增强主要的全日、半日分潮的能量,引起潮流的流速增加。通过数模试验,第一次发现在白龙半岛附近海域存在一个小尺度的反气旋涡,范围大约位于108°E~108.7°E、20.8°N~21.5°N,涡旋在秋季产生,可以一直持续到冬季结束。
[Abstract]:Based on the observation data and numerical calculation method of the Bailong Peninsula in the western part of Guangxi during 2011-2012, the basic characteristics and variation rules of tidal current and residual current in the sea area are studied. The following conclusions are drawn: the tide in the Bailong Peninsula is a normal all-day tide, but the tidal current is an irregular semi-diurnal tidal current, and the rotating spectrum analysis shows that the counterclockwise rotation component of the tidal current is stronger than the clockwise rotational component. The total energy of the whole day tidal current is smaller than that of the semi-diurnal tidal current, and the amplitude of the tidal current is obviously higher in summer than in winter, because the inner tide in the shallow sea area caused by the remarkable stratification in the northern part of Beibu Gulf in summer is also significant. In addition, it is found for the first time that the typhoon passing through Beibu Gulf will increase the energy of the main diurnal and half-day tide, which will increase the velocity of tidal current. By numerical simulation experiments, it is found for the first time that there is a small scale anti-gas vortex in the sea area near the Bailong Peninsula, with a range of about 108 掳E ~ (10. 7) 掳E ~ (10. 8) 掳E ~ (2 +) ~ (20. 8) 掳N ~ (2) ~ (2) 掳N ~ (1.5) 掳N ~ (21. 5).
【作者单位】： 中国海洋大学海洋与大气学院;鲁东大学土木工程学院;华东师范大学河口海岸学国家重点实验室;国家海洋局第三海洋研究所;国家海洋局第一海洋研究所;
【基金】：国家自然科学基金项目(41266002,41406031,41406044) 中央级公益性科研院所基本科研业务费专项资金项目(2015P02)资助~~
【分类号】：P731.21
，
本文编号：2152767
[Abstract]:Based on the observation data and numerical calculation method of the Bailong Peninsula in the western part of Guangxi during 2011-2012, the basic characteristics and variation rules of tidal current and residual current in the sea area are studied. The following conclusions are drawn: the tide in the Bailong Peninsula is a normal all-day tide, but the tidal current is an irregular semi-diurnal tidal current, and the rotating spectrum analysis shows that the counterclockwise rotation component of the tidal current is stronger than the clockwise rotational component. The total energy of the whole day tidal current is smaller than that of the semi-diurnal tidal current, and the amplitude of the tidal current is obviously higher in summer than in winter, because the inner tide in the shallow sea area caused by the remarkable stratification in the northern part of Beibu Gulf in summer is also significant. In addition, it is found for the first time that the typhoon passing through Beibu Gulf will increase the energy of the main diurnal and half-day tide, which will increase the velocity of tidal current. By numerical simulation experiments, it is found for the first time that there is a small scale anti-gas vortex in the sea area near the Bailong Peninsula, with a range of about 108 掳E ~ (10. 7) 掳E ~ (10. 8) 掳E ~ (2 +) ~ (20. 8) 掳N ~ (2) ~ (2) 掳N ~ (1.5) 掳N ~ (21. 5).
【作者单位】： 中国海洋大学海洋与大气学院;鲁东大学土木工程学院;华东师范大学河口海岸学国家重点实验室;国家海洋局第三海洋研究所;国家海洋局第一海洋研究所;
【基金】：国家自然科学基金项目(41266002,41406031,41406044) 中央级公益性科研院所基本科研业务费专项资金项目(2015P02)资助~~
【分类号】：P731.21
，
本文编号：2152767
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