东中国海环流及其相关动力过程的模拟与分析海洋科学专业论文.docxVIP

零l￡部隧絮海域冬季黑潮以其分支形式自j℃入侵，夏季则圭要以大珐边缘流的 零l￡部隧絮海域冬季黑潮以其分支形式自j℃入侵，夏季则圭要以大珐边缘流的 形式向北进入陆架。台湾暖流终年表现出东、北两分支结构，但两分支表现出 明显兹季节瞧交德特征。与夏季籀毙，冬攀jt分支流速较，l、，滚稿较窄，嚣东 分支的流辐比夏攀宽。黄海暖流仪在冬季出现，支持“黄海暖流是一强北风作 瑙下翦{}偿性海漉”餍点。论文还对东海番暖流静承深及其季节燹纯氇避行了 系统的分析。 黄海环流的攀节变化驻著依赖温度分布及垂照结构。通过建立黄海籍压模 式并考虑潮汐、风和湍流混合，成功模拟了黄海激发结构的年循环过程。分析 结果表明，渤海和黄海浅水域的热结构分冬季均～型和鼹季层化挺，层化与对 溅戆交替幸挈瘸决定黄海中郏涅凄豢壹结掬，莛海冷农霞、荚海瑗溅、醛絮锋支 配着黄海局域温膨结构。黄海暖流敏感依赖于冬攀的偏北lxL，冬攀黄海暖流在 藤黄海呈蠛两分支，萁牵疆分支麓黄海疆流魏棱，沦。黄海审部夏零铎流嚣露弱， {龉其冷水豳的边缘呈现逆时针的水平环流。 近海环流及矮环境问题的研究追切需要牟界适应静数值方法，通过将微分 水平坐标变换和。垂壹变抉巧妙结合，创建了熊完全邋应岸边界和底地形网 格的曲线坐标三维正压数值模式，并将模式成功运用渤海的潮流模拟。该模式 与现套其它潮模式糟毙，馕用岸爨投合列揍数夔模式，锼数篮模裟所提边界条 件更精确，数值计算更简化，同时还能减少岸界因网格“锯齿”锵来的伪效应， 毽模蘩续祭更藏毽靠。 关镳词： 斜压过程 陆架环流 三维数值模式 东中国海 2 AbstractThe Abstract The main physical processes in the East China Sea include the Kuroshio and water flux of the Taiwan strait and Tsushima strait,the thermohaline structure and its seasonal variation by exchange of heat and water on sea surface and mixing of tide,as well as the tide and tidal current,and circulation and its seasonal variationt These processes control the distributions of oceanography factors and the transports of mass and energy in the East China Sea(ECS)． Knowledge of the fluxes，velocity distributions and their variations in each of straits in the ECS were very important for study of the circulation and coastal environment in ESC．The OeCAM global occan model results were applied to calculate monthly water transport through 4 main straits around ECS．Analysis results showed that annuaI mean flux in Eastern Taiwan was about 25．8Sv and the flux in summer was larger than that in spring and毫Hn“黜，as well as f‘ smallest in winter．Annual mean flux in Togara Strait was about 27．9Sv and the flux in summer was larger than that in spring and winter,as well as smallest in autumn．Water always flowed from the South China Sea to the ECS in each season in the Taiwan StraiL The maximum flux was about 3．1Sv that appeared in July,and minimum was only 0．9Sv in November．The annual meall flux was about 2．0Sv．