河口区三维温度和盐度时空分布数值模拟研究
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- 英文论文题名：Temporal and spatial variabilities of temperature and salinity simulated by three-dimension numerical model in a complex estuary area
- 论文作者：林建伟 ; MACDONALD Thomas ; 卢文芳
- 英文论文作者：LIN Jianwei ; MACDONALD Thomas ; LU Wenfang ; Fisheries Research Institute of Fujian ; Environmental Science Department ; University of San Francisco ; State Key Laboratory of Marine Environmental Science ; Xiamen University
- 年：2016
- 作者机构：福建省水产研究所;Environmental Science Department,University of San Francisco;厦门大学海洋环境科学国家重点实验室;
- 论文关键词：三维 ; 数值模拟 ; 温度 ; 盐度 ; 厦门湾
- 英文论文关键词：three dimension ; numerical simulation ; temperature ; salinity ; Xiamen Bay
- 会议召开时间：2016-11-11
- 会议录名称：福建省海洋学会2016年学术年会论文摘要集
- 语种：中文
- 分类号：P731
- 学会代码：FJHY
- 会议名称：福建省海洋学会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：福建省海洋学会、福建省水产研究所
- 学会名称：福建省海洋学会
- 页数：2
- 文件大小：64k
- 原文格式：O
- 会议级别：地方
摘要
建立河口与海湾模型,特别是复杂地区的模型,已经对研究人员和决策者提出了挑战。本文研究的目的是建立一个能够高效和准确地模拟复杂河口海湾的数值模型。厦门湾具有地形复杂、潮差大和潮滩面积大的特点很适合作为本文研究的对象。本文通过运用窄缝法改进ECOMSED,建立了厦门湾三维水动力变边界数值模型,并利用实测潮位、流速和盐度数据对模拟结果进行了验证,得到了较高的吻合度。模拟结果表明,进入厦门湾的大部分潮流绕过金门岛,涨向同安湾,小部分经厦门岛以南流入九龙河口;模型计算的水动力、温度和盐度的时空分布变化结果较好地反映了它们在河口区相互作用下的层化现象,这将有利于决策者在该区的应急反应与规划。本文的研究手段和建立的模型将为其它复杂海湾系统的研究提供有效可行的方法和准确详细的结果。
Modelling of estuarine and bay coastal areas has presented challenges to researchers and decision makers,especially in complex systems.The objective of this study is to develop a model that is both accurate and computationally efficient for simulating complex estuary and bay systems.Xiamen Bay is a particularly useful location for this study,due to the bay's complex bathymetry,high tidal range,and extensive mudflats.The hydrodynamics and salinity of Xiamen Bay are examined using a three-dimensional model,in which we modified ECOMSED using a capillary approach to efficiently and accurately represent mudflats that become dry during parts of the tidal cycle.The results show that this approach to the complex conditions at Xiamen Bay agrees well with tidal elevation,velocity,and salinity data gathered at stations located throughout the Bay.Much of the ocean water entering Xiamen Bay flows around Kinmen Island and towards Ton(?)an Bay.Only ocean water form coastal areas directly south of Xiamen Bay flow into the Jiulong Estuary.The resulting predictions indicate that considerable temporal and spatial variations in hydrodynamics,salinity and temperature occur in the Bay,and that aspects of the flow patterns reflect the layering phenomenon of their interaction in the estuary area well,which would be of use to decision makers in both emergency response and in planning.The modelling approach provides accurate and detailed results,and this approach should be applicable to other complex bay systems.
Modelling of estuarine and bay coastal areas has presented challenges to researchers and decision makers,especially in complex systems.The objective of this study is to develop a model that is both accurate and computationally efficient for simulating complex estuary and bay systems.Xiamen Bay is a particularly useful location for this study,due to the bay's complex bathymetry,high tidal range,and extensive mudflats.The hydrodynamics and salinity of Xiamen Bay are examined using a three-dimensional model,in which we modified ECOMSED using a capillary approach to efficiently and accurately represent mudflats that become dry during parts of the tidal cycle.The results show that this approach to the complex conditions at Xiamen Bay agrees well with tidal elevation,velocity,and salinity data gathered at stations located throughout the Bay.Much of the ocean water entering Xiamen Bay flows around Kinmen Island and towards Ton(?)an Bay.Only ocean water form coastal areas directly south of Xiamen Bay flow into the Jiulong Estuary.The resulting predictions indicate that considerable temporal and spatial variations in hydrodynamics,salinity and temperature occur in the Bay,and that aspects of the flow patterns reflect the layering phenomenon of their interaction in the estuary area well,which would be of use to decision makers in both emergency response and in planning.The modelling approach provides accurate and detailed results,and this approach should be applicable to other complex bay systems.
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