Analysis of Surface Deformation in East Dongting Lake Based on 2016-2019 Sentinel-1A Dataset

Figure 1

(a) Location of East Dongting Lake in China. (b) Terrain of the study area. Due to the large changes in the area of East Dongting Lake during the flood and dry periods, in this study, the embankment of the East Dongting Lake is considered as the lake boundaries, shown in light blue. Blue lines are the rivers around East Dongting Lakes. HRR: Huarong River; LQR: Longqing River; LGR: Laogan River; XQR: Xinqiang River; YLR: Yuelai River. Dark blue dashed line is the research area after subsetting of the satellite images in this paper, and red dots show the main towns. Black rectangle represents the location of the meteorological station. Black triangle represents the location of unwrapping reference point. (c) Google Earth image of East Dongting Lake acquired in flood erosion. The east is the mountainous area, the west is the flatlands, the middle south is the lake floodplain terrace, and the north is the Yangtze River floodplain.