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| 1 | EFDC模型在长江口及相邻海域三维水流模拟中的开发应用显示文摘基于公开代码的EFDC(Environmental Fluid Dynamics Computer Code)模型,建立了范围包括长江下游段、长江口、杭州湾及邻近海域的三维水流数值模型。用Deflt3D附带软件得到了长江口海域正交曲线网格剖分,更好地实现了网格与地形边界的拟合;并在模拟浅滩动力过程中,设置最小水深条件限制,成功地消除了复杂浅滩地形情况下原模式运行出现负水深的局限。利用10个潮位站的实测潮位以及9个流速测站的水流流速资料对模型参数进行了验证和率定。模拟结果能够与实测值较好地吻合,各站模拟计算潮位值相对误差小于10%,。率定、改造后的模型不仅能够较好地模拟反映长江口海域三维潮汐及水流运动,而且还能对潮流运动特征进行分析。该模型可用于长江口海域相关问题的进一步研究。 | 谢锐 吴德安 严以新 周海 | 2010 | 水动力学研究与进展(A辑)2010，25，2： | 38 |
| 2 | 珠江三角洲一维河网与三维河口耦合水质模型模拟与验证显示文摘在一维与三维耦合水动力、悬沙模型的基础上,构建了珠江三角洲一维与三维耦合水质模型。模型中包括浮游植物-氮-磷-碳-溶解氧循环,并考虑颗粒物在底泥与水体界面的再悬浮过程。选择了三个代表性时段(1999年1月、1999年7月与2000年)进行水质模拟,并采用相应水期的实测资料进行验证。结果表明,耦合水质模型计算效果良好,较好地再现了整个研究区域内各水质要素的时空分布规律,成功描述了珠江三角洲河网与河口区的动力与生物化学变化过程。 | 胡嘉镗 李适宇 裴木凤 耿兵绪 | 2012 | 海洋与湖沼2012，43，1： | 8 |
| 3 | 风影响夏季长江冲淡水扩展的数值模拟研究显示文摘基于EFDC(Environmental Fluid Dynamics Code)数值模式建立了长江口及其邻近海域的三维水动力学模型,用于研究风对夏季长江冲淡水扩展的影响。基于实测资料的验证结果表明,模型能够比较真实的反映潮汐、海流、温度和盐度的变化过程。敏感性试验的结果显示,风对夏季长江冲淡水的扩展有着非常显著的影响。在Ekman输送的作用下,长江冲淡水将向风向的右侧扩展。5m/s风速下,东风、东南风、南风和西南风4个风向下的冲淡水明显向外海扩展,而西风、西北风、北风和东北风下的冲淡水都被限制在近岸水域。Ekman输送的强度随风速增强而增强,冲淡水向风向右侧的扩展也越来越明显。舌轴区因为层结明显,湍流活动相对较弱,对风能量的耗散相对较小,所以相同的风速增量对舌轴区表层水的加速作用最强,这导致更多的淡水经由舌轴区输送,使得淡水舌宽度随风速的增加而变窄。对长江口海域表面风的气候统计分析表明,上述数值试验结果能够很好的解释气候态下长江冲淡水扩展方向与表面风变化的关系。 | 刘宝超 李建平 冯立成 | 2013 | 海洋学报2013，35，1： | 8 |
| 4 | The Impact of Diferent Vertical Difusion Schemes in a Three-Dimensional Oil Spill Model in the Bohai Sea显示文摘Vertical transport is critical to the movement of oil spills in seawater.Breaking waves play an important role by developing a well-defined mixing layer in the upper part of the water column.A three-dimensional(3-D)Lagrangian random walk oil spill model was used here to study the influence of sea surface waves on the vertical turbulence movement of oil particles.Three vertical difusion schemes were utilized in the model to compare their impact on oil dispersion and transportation.The first scheme calculated the vertical eddy viscosity semi-empirically.In the second scheme,the vertical difusion coefcient was obtained directly from an Eulerian hydrodynamic model(Princeton Ocean Model,POM2k)while considering wavecaused turbulence.The third scheme was formulated by solving the Langevin equation.The trajectories,percentages of oil particles intruding into water,and the vertical distribution structures of oil particles were analyzed for a series of numerical experiments with diferent wind magnitudes.The results showed that the diferent vertical difusion schemes could generate diferent horizontal trajectories and spatial distributions of oil spills on the sea surface.The vertical difusion schemes caused diferent water-intruding and resurfacing oil particle behaviors,leading to diferent horizontal transport of oil particles at the surface and subsurface of the ocean.The vertical difusion schemes were also applied to a realistic oil spill simulation,and these results were compared to satellite observations.All three schemes yielded acceptable results,and those of the third scheme most closely simulated the observed data. | 李燕 朱江 王辉 | 2013 | Advances in Atmospheric Sciences2013，30，6： | 8 |
| 5 | The study on three-dimensional numerical model and fronts of the Jiulong Estuary and the Xiamen Bay显示文摘Applying the methods of on-site observation and dynamic model, the research on the fronts at the Jiulong Estuary has been carried out, during which spatial and temporal distribution, dynamic characteristics and formation mechanism of salinity fronts are analyzed and discussed. The research shows that the estuarine fronts mainly lie in the area from the Jiyu Islet to the Haimen Island, outside of Yuweizai to Hulishan cross-section, the near coast of Yuweizai and the south of the Songyu-Gulangyu Channel. The fronts in the former two regions are formed directly by plume, while the one near the coast of Yuweizai is a tidal intrusion front caused by flood current and the one at the south of the Songyu-Gulangyu Channel is the result of current shear transformation. Under normal circumstances, fresh water of the Jiulong River mainly influences the inside of the Xiamen Bay, and when it is in typhoon seasons, plume front can affect the Taiwan Strait and has an effect on the biogeochemical processes in the strait. | LUO Zhibin PAN Weiran LI Li ZHANG Guorong | 2012 | Acta Oceanologica Sinica2012，31，4： | 3 |
| 6 | 垂直分辨率对长江口海域M_2分潮模拟的影响显示文摘基于EFDC(Environmental Fluid Dynamics Code)模式建立了长江口及其邻近海域的三维水动力学模型,研究模型的垂直分辨率对该海域M2分潮模拟的影响。结果表明:垂直分辨率的变化对M2分潮传播方向的模拟结果影响较小,但其可通过底摩擦和湍流耗散两个计算过程来影响潮能通量的模拟结果,最终对长江口和杭州湾内的M2分潮振幅产生显著的影响。最底层厚度较大时,上层自由水体的高流速特征在最底层过于明显,进而导致计算的底摩擦应力偏高,此时提高底层的垂直分辨率会降低底摩擦对能量的耗散。另一方面,垂直湍流混合作用会随垂直分辨率的增加而增强,所以垂直分辨率增加到一定程度后,上层自由水体的高流速会经由增强的湍流混合而更多的传入底层,使计算的底摩擦应力随垂直分辨率的提高而有重新增加的趋势,进而又增强底摩擦对潮能的耗散。 | 刘宝超 李建平 冯立成 | 2013 | 海洋学报2013，35，4： | 1 |
| 7 | 长江洪水期三峡工程对长江口水动力特性及污水稀释扩散影响的数值模拟研究显示文摘运用ECOMSED建立了长江口的水动力模型。潮位和流速的验证结果表明模型能够较好地反应长江口的水动力特性,可以应用于长江口的实际计算。对2010年7月长江发生的大洪水对长江口的水动力特性的影响进行了模拟。模型计算结果表明,由于三峡工程的蓄水作用,使得长江口附近的流速发生明显的减小,对污水的稀释扩散和水环境也会产生一定的影响。上海三个排污口分别排出稀释度为1000的污水时,由于三峡工程的蓄水,上游来水量相应减少,不利于上海排出污水的稀释扩散。 | 张怡辉 张明 | 2011 | 水动力学研究与进展(A辑)2011，26，4： | 0 |
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