基于卫星遥感图像的丰满水库冰情演变规律研究  

Research on ice regime evolution of the Fengman Reservoir based on satellite remote sensing images

作　　者：李楠 曹蕊 脱友才[3] 邓云[3] LI Nan;CAO Rui;TUO Youcai;DENG Yun(Yalong River Hydropower Development Company,Ltd.,Chengdu 610051,China;Fujian Environmental Protection Design Institute Co.,Ltd.,Fuzhou 350003,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]雅砻江流域水电开发有限公司,四川成都610051 [2]福建省环境保护设计院有限公司,福建福州350003 [3]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《水利水运工程学报》2020年第3期19-28,共10页Hydro-Science and Engineering

基　　金：国家自然科学基金青年科学基金资助项目(51309169)。

摘　　要：基于ENVI 5.1软件平台,采用Landsat-7和Landsat-8卫星遥感图像,对吉林市丰满水库的卫星遥感图像进行冰情解译和库表温度反演,探究丰满水库的整体冰情演变规律及其与库区水体热力演变的关系。结果表明:在整个冰期,丰满水库入流条件稳定,库区冰情受水体热力学影响显著;在结冰期,库区表层水温呈库中低、坝前和库尾高的分布规律,结冰过程从库区中部开始,逐渐向坝前和库尾发展,坝前最后封冻;在稳封期,库区冰盖下水温呈垂向逆温分布,冰盖厚度沿程分布不均匀,库尾存在10~30 km的明流段;在开河期,库区表层水温自库尾至坝前呈沿程降温分布,水库以文开河的形式自库尾向坝前逐渐开河。Based on the ENVI 5.1 software platform and by using the Landsat-7 and Landsat-8 satellite remote sensing images,ice regime interpretation and surface temperature retrieval were performed for the Fengman Reservoir,which is located in Jilin City.Afterwards,the patterns of the overall ice regime evolutions and their relations with thermal variations of the Fengman Reservoir were investigated.The results indicated that:during the whole ice season,the ice regime was significantly influenced by the water thermodynamics of the Fengman Reservoir due to the steady inflow conditions;in the freeze-up period,the reservoir surface water temperatures showed a pattern,with the temperature lower in the middle area of the reservoir,higher in the area in front of the dam and the end area of the reservoir,the freeze-up started from the middle area of the reservoir and expanded to the area in front of the dam and the end area of the reservoir,and the area in front of the dam froze up at last;in the steady freeze-up period,vertical water temperature of the reservoir was inversely distributed underlying the ice cove,ice thickness was unevenly distributed along the reservoir,and an open water flow of 10 km to 30 km existed in the end area of the reservoir;in the break-up period,the surface water temperatures declined from the area in front of the dam to the end area of the reservoir,and the thawing started from the end area of the reservoir to the area in front of the dam in the form of over-mature break-up.

关 键 词：卫星遥感图像 冰情解译 温度反演 水库冰 热力演变 

分 类 号：TV697.2[水利工程—水利水电工程]