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引用本文:张素香,许新发,徐兴,CHU Vicnent H,邬年华,付莎莎,李熙.鄱阳湖水龄季节性变化特征.湖泊科学,2018,30(1):199-210. DOI:10.18307/2018.0120
ZHANG Suxiang,XU Xinfa,XU Xing,CHU Vicnent H,WU Nianhua,FU Shasha,LI Xi.Seasonal variations of water age in Lake Poyang. J. Lake Sci.2018,30(1):199-210. DOI:10.18307/2018.0120
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鄱阳湖水龄季节性变化特征
张素香1,2, 许新发3, 徐兴4, CHU Vicnent H2, 邬年华3, 付莎莎3, 李熙5
1.南京信息工程大学气象灾害教育部重点实验室, 南京 210044;2.McGill University, Department of Civil Engineering and Applied Mechanics, Montreal, Quebec H3A 2K6, Canada;3.江西省水利科学研究院, 南昌 330029;4.江苏省水文水资源勘测局无锡分局, 无锡 214031;5.河海大学港口海岸与近海工程学院, 南京 210098
摘要:
基于环境水动力学模型EFDC源程序,建立了染色剂模型和水龄模型,在将模型与航测水文数据验证吻合的基础上,分别计算了鄱阳湖自然条件下春、夏、秋、冬季的水龄和倒灌前后鄱阳湖染色剂和水龄分布的变化,以及五河水系各分支河流水龄.分季节的水龄计算表明鄱阳湖水体交换受季节性来水影响明显.夏、秋季的水龄相对较小,在多数年份又受到长江水倒灌的影响导致水龄有所增大;冬、春季水龄较大,亦无长江水倒灌现象,相较于夏、秋季,水域面积明显减少.分支流的水龄计算表明,西南湖区的水体交换主要受到赣江的影响,西北湖区水体交换主要受到修水和赣江的影响,南部湖区主要受到抚河与信江的影响,东部湖区主要受到饶河的影响,湖心区和入江水道则受到五河水系的综合影响.同时水龄的研究表明拟建的鄱阳湖水利枢纽工程"调枯不调洪"的原则是合理的,为鄱阳湖水利枢纽工程论证提供了重要的参考依据.
关键词:  鄱阳湖  鄱阳湖水利枢纽工程  EFDC  风场  染色剂  水龄  季节性变化
DOI:10.18307/2018.0120
分类号:
基金项目:国家自然科学基金项目(51369011)、江西省水利科技项目(KT201405)和江苏省水利科技项目(2017039)联合资助.
Seasonal variations of water age in Lake Poyang
ZHANG Suxiang1,2, XU Xinfa3, XU Xing4, CHU Vicnent H2, WU Nianhua3, FU Shasha3, LI Xi5
1.Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China;2.Department of Civil Engineering and Applied Mechanics, McGill University, Montreal, Quebec H3A 2K6, Canada;3.Jiangxi Provincial Research Institute of Water Science, Nanchang 330029, P. R. China;4.Wuxi Branch of Jiangsu Province Hydrology and Water Resource Investigation Bureau, Wuxi 214031, P. R. China;5.College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, P. R. China
Abstract:
Based on source code of Environmental Fluid Dynamics Model (EFDC), the water age model and conservative dye model were set up to study water age of seasons and individual rivers of Lake Poyang under natural conditions. Water age calculations indicate that seasonal variations of water age in Lake Poyang are significant. The water age of summer or autumn is smaller, which is increased during reversing process in flood season in most of consecutive years. The water age of winter or spring is larger without occurrence of reversing process. The water age of individual river in five river systems indicates that the exchange of water in the southwest lake zone is mainly influenced by Ganjiang River, whereas in the northwest zone influenced by Ganjiang River and Xinjiang River, in the southern lake zone by Ganjiang River and Xinjiang River, in the eastern lake zone by Raohe River, respectively. The central zone and channel to Yangtze River are influenced by the five rivers together. The proposed Lake Poyang Complex will be rational with principles "water level control during dry seasons not during flood seasons", and the model is proved of reference value for feasibility study of Lake Poyang Complex.
Key words:  Lake Poyang  Lake Poyang Complex  Environmental Fluid Dynamics Model (EFDC)  wind  dye  water age  seasonal variation
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