北部湾潮致余流和风生海流的数值计算与实测资料分析  

Numerical Computation and Analysis of Observational Data of Tide-induced Residual Currents and Wind-driven Currents in Beibu Bay

作　　者：陈波[1] 李培良[2] 侍茂崇[2] 邱绍芳[1] 庄军莲[1] 何碧娟[1] 蒋磊明[3] 

机构地区：[1]广西科学院,广西南宁530007 [2]中国海洋大学,山东青岛266003 [3]广西大学,广西南宁530004

出　　处：《广西科学》2009年第3期346-352,共7页Guangxi Sciences

基　　金：国家自然科学基金项目(No.40566001)资助

摘　　要：北部湾潮致余流的流速只有1～2cm／s左右，靠近海南岛一侧，潮致余流的环流基本为气旋式：分别位于洋浦以北、东方以西、莺歌海西南方。只有靠近越南红河口，有一个反气旋涡；风生海流呈现冬季模式和夏季模式。冬季，表层19°N以北为西南向的流动，19°N以南，靠近海南岛水域为西向流动，越南沿岸为南向流动。大部分区域流速为5～12cm／s，流速最大位于琼州海峡西面及海南岛西南部，可达10～20cm／s，底层流速明显比表层小。夏季，表层，大部分海区为东北向流动，海南岛以南的海区为向东流动，流速大都在3～7cm／s，越南沿岸和海南岛西岸及西北沿岸流速为7～9cm／s，最大流速出现在海南岛西和西北沿岸，可以达到12cm／s。底层，大部分地区流速均小于1cm／s。The velocity of tide-induced residual currents in Beibu Bay is about 1 - 2cm/s. Near Hainan island, cyclonical circulations of residual currents are located on the north of Yangpu, west of Dongfang and south-west of Yingge Sea respectively. There is an anti-cyclonical eddy near estuary of Hong river in Vietnam. Wind-driven current presents different models. In winter, the surface current on the north of 19°N is mainly SW, while westward near Hainan island and southward in Vietnam coastal on the south of 19°N. In most area the velocity is 5-12cm/s and the maximum is 10 - 20cm/s appearing on the west of Qiongzhou strait and south-west of Hainan island. The bottom velocity is obviously small than the surface velocity. In summer, the surface current in most area is mainly NE, while eastward（3-7cm/s）on the south of Hainan island. The velocity is 7-9cm/s in Vietnam coastal and on the west and north-west of Hainan island, and the maximum is 12cm/s appearing on the west and north-west of Hainan island. The bottom velocity is mostly small than 1cm/s.

关 键 词：潮致余流 风生海流 摸拟计算 北部湾 

分 类 号：P731.21[天文地球—海洋科学]