摘要
利用Finite Volume Coastal Ocean Model(FVCOM)三维模式以及National Centers for Environmental Prediction(NCEP)Climate Forecast System提供的北部湾的冬季风场,建立了北部湾冬季的风生环流模型。模拟得到北部湾冬季表中底层的风生环流结构。结果表明:整体上看,环流从琼州海峡流入北部湾,沿越南沿岸向南流动。从分层结构上看,冬季表层北部湾中部位置被1个大范围逆时针环流控制,南部湾口附近也存在1个不闭合的逆时针环流;而中层和底层的环流在琼州海峡西北和西南侧各形成1个小的逆时针环流,同时北部湾北部中间位置呈现1个顺时针环流。琼州海峡、广西及越南沿岸环流流速较大,有利于污染物的输移扩散,而北部湾北部中间位置,莺歌咀附近出现闭合环流且海南岛西南岸流速较小,不利于污染物的输移扩散,对冬季北部湾的海洋环境会产生不利影响。
Based on Finite Volume Coastal Ocean Model（FVCOM）and National Centers for Environmental Prediction（NCEP）Climate Forecast System,wind-driven circulation in Beibu Gulf in winter was simulated.The surface,middle and bottom wind-driven circulation structures were obtained and the results were list as follows.In general,the circulation flew from Qiongzhou Strait to Beibu Gulf,then towards the southeast along the coast of Vietnam.From the layer structures,a large anti-clockwise circulation was produced in the center of the surface layer in the Beibu Gulf.The circulation structures of the middle and bottom layers in the Beibu Gulf were similar.Two small anti-clockwise circulations existed in the northwest and southwest of the Qiongzhou Strait separately.At the same time,a clockwise circulation was shown in the middle of the Beibu Gulf.Pollutants transportation was effective in Qiongzhou Strait,Guangxi Province,and along the coast of Vietnam because of the high circulation velocity.However,closed circulation happened in the center of the Beibu Gulf and the circulation velocity is relatively low in the southwest of Hainan Island,which were not conducive to transportation of pollutants and also had negative effects on the marine environment of the Beibu Gulf in winter.
出处
《海洋湖沼通报》
CSCD
北大核心
2015年第1期129-133,共5页
Transactions of Oceanology and Limnology
关键词
北部湾
风生环流
数值模拟
Beibu Gulf
wind-driven circulation
numerical simulation
