| 引用本文: | 张利民,濮培民,大西行雄.一个三维斜压水动力模型的建立及其在日本琵琶湖中的应用.湖泊科学,1996,8(1):1-7. DOI:10.18307/1996.0101 |
| Zhang Limin,Pu Peimin.A three-dimensional baroclinic model of Lake Biwa hydrodynamics. J. Lake Sci.1996,8(1):1-7. DOI:10.18307/1996.0101 |
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| 摘要: |
| 水温的空间分布对很多湖泊水文现象关系甚大,本文建立了日本琵琶湖的三维斜压水动力数值模式。模拟计算结果表明:1)在不同风速驱动下,湖的上、下两层可形成不同的环流型;2)除形成环流处外,其它部分流速、流向在上、下层表现出明显的垂直切变;3)闭合式温度场储存位能,即使在无风和初始静止流场情况下,也可驱动湖流并形成若干环流特征;4)风对水的驱动作用是形成北湖北部稳定环流的决定性因子,并且本身可构造出温度场的合理性水平分布。 |
| 关键词: 三维斜压 数值模拟 琵琶湖 |
| DOI：10.18307/1996.0101 |
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| A three-dimensional baroclinic model of Lake Biwa hydrodynamics |
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Zhang Limin,Pu Peimin
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Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008
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| Abstract: |
| It is of great importance to understand the relation between hydrodynamical factors in lakes.On the basis of former work, a 3-D barcx:linic numerical model of lake hydrodynamics was designed to simulate the dynamic and thermal phenomena in Lake Biwa, Japan.The study results show: (1) The forcing action of different winds causes different circulation in the basin.(2) In addition to the Gyres, currents opposite to those at the upper layer are formed at the lower layers.(3) The closure temperature field can store potential energy, which can drive current to form some characteristic gyres, even if under the initial condition of 0 m/s wind and water velocity.(4) The driven action of wind is a decisive factor to produce stable gyre in the northern part of the north basin, and the adaptive temperature field will also be generated. |
| Key words: Three-dimensional baroclinic numerical simulation Lake Biwa |
