Inversion of underwater topography of lake in Yangtze River Economic Belt based on thermal infrared remote sensing data——a case study of East Lake in Wuhan， China
LIU Hui1,2， ZHOU Yadong1,2， HE Baoyin1， YANG Xiaoqin3， HUANG Jinxian4
1.Institute of Geodesy and Geophysics， Chinese Academy of Science， Wuhan 430077， China； 2.University of Chinese Academy of Sciences， Beijing 100047， China；3.Hubei Provincial Hydrology& Water Resources Bureau ，Wuhan 430071；4.Wuhan University， Wuhan 430072， China
Abstract：A method of water depth measurement for lakes based on thermal infrared remote sensing data is proposed，which is aimed at the shallow lakes in plain area of Yangtze River Economic Belt. Firstly， according to the vertical distribution of lake water temperature， it is deduced that there is an approximate proportional relationship between surface water temperature and reciprocal of water depth square in shallow lakes. Then， water surface temperature of East Lake is retrieved from Landsat-8 Thermal Infrared Sensor( TIRS) imagery， and according to the water depth of the sampling point by field measurement， the relationship between water depth and water temperature are determined by semi-empirical regression method， and the water depth of the whole lake is able to be retrieved from the established relationship based on the data of water temperature. Finally， the underwater topography is obtained by combining the water level data of the image day. The correlation coefficient R2 of the model is 0.657， with the average relative error of 8.93% are generated in the inversion of shallow lake water depth. The experiment shows that the thermal infrared remote sensing would provide a fast and new method for the water-depth measurement and the underwater topographic survey of shallow lakes in plain area of the Yangtze River Economic Belt.
刘 惠,周亚东,何报寅,杨小琴,黄静娴. 长江经济带湖泊水下地形的热红外遥感反演——以武汉市东湖为例[J]. 华中师范大学学报(自然科学版), 2019, 53(5): 765-772.
LIU Hui,ZHOU Yadong,HE Baoyin,YANG Xiaoqin,HUANG Jinxian. Inversion of underwater topography of lake in Yangtze River Economic Belt based on thermal infrared remote sensing data——a case study of East Lake in Wuhan， China. journal1, 2019, 53(5): 765-772.
2019, Vol. 53 
