广西涠洲岛南岸表层海流特征及机制实测分析

发布时间：2018-03-28 03:03

本文选题：涠洲岛　切入点：长时间序列实测数据　出处：《中国海洋大学学报(自然科学版)》2017年04期

【摘要】：涠洲岛周边海域拥有珍贵的珊瑚礁生态区,但近年来赤潮频发,而针对涠洲岛的海流实测数据研究仅限于1988-1989年的观测结果。因此本文基于涠洲岛南岸2015年1-8月的观测数据分析其表层海流特征有重要意义。本文发现涠洲岛南岸为不正规半日潮流,半日潮流要强于全日潮流且以逆时针旋转运动为主,M2分潮的潮流椭圆长轴最强;潮流呈现季节性变化,其中冬季的潮流最强,夏季其次,春季最弱;冬季分潮的潮流椭圆长轴比夏季大约10cm/s,夏季的分潮潮流椭圆长轴比春季大约1cm/s。虽然冬季潮流最强,但夏季的低频流速最强,约为6.2cm/s,大于冬季的4.5cm/s。对比同时期的季风变化,发现涠洲岛南岸的表层流基本为季风驱动,同时大风江和廉江的冲淡水对该区域流起重要作用。
[Abstract]:The waters surrounding the Weizhou Island has precious coral reef area, but in recent years, frequent red tides and currents for Weizhou Island study measured data only observations for 1988-1989 years. The observation data of the South Bank of the Weizhou Island in 2015 1-8 months to analyze the surface current characteristics have great significance on the South Bank of the Weizhou Island. The paper found that for irregular semidiurnal tide, half day the trend was stronger than the diurnal trend and to counter clockwise motion, M2 trend of the major axis of the ellipse strongest tide; the trend of seasonal changes, the trend of the strongest in winter, second in the summer, spring is the weakest; tidal current ellipse axis in winter than in summer is about 10cm/s, the tidal current in the summer than in the long axis of the ellipse about 1cm/s. although the strongest trend in winter, but the low velocity is strongest in summer, about 6.2cm/s, compared with 4.5cm/s. in winter monsoon is greater than the same period, found in Weizhou The South Bank of the island surface flow driven basic monsoon, while wind and Lianjiang fresh water flow in the region plays an important role.

【作者单位】：国家海洋局北海海洋环境监测中心站;广西科学院广西近海海洋环境科学重点实验室;中国海洋大学海洋与大气学院;
【基金】：国家自然科学基金项目(41406044;41566001) 广西科技攻关项目(桂科攻1598016-8) 广西自然科学基金项目(2015GXNSFCA139023) 广西近海海洋环境科学重点实验室开放基金项目(GXKLHY14-01)资助~~
【分类号】：P731.21

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