Monitoring monthly surface water dynamics of Dongting Lake using Sentinel-1 data at 10 m.

ABSTRACT: High temporal resolution water distribution maps are essential for surface water monitoring because surface water exhibits significant inner-annual variation. Therefore, high-frequency remote sensing data are needed for surface water mapping. Dongting Lake, the second-largest freshwater lake in China, is famous for the seasonal fluctuations of its inundation extents in the middle reaches of the Yangtze River. It is also greatly affected by the Three Gorges Project. In this study, we used Sentinel-1 data to generate surface water maps of Dongting Lake at 10 m resolution. First, we generated the Sentinel-1 time series backscattering coefficient for VH and VV polarizations at 10 m resolution by using a monthly composition method. Second, we generated the thresholds for mapping surface water a

SUBMITTER: Xing L 

PROVIDER: S-EPMC6015492 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature