SONGHUA RIVER BASIN FLOOD MONITORING USING MULTI-SOURCE SATELLITE REMOTE SENSING DATA

The approach of monitoring flood by using multi-source satellite data is presented in order to make full use of these data to obtain flood information. Taken the Songhua River flood in 2013 as an example, Fengyun-3 Microwave Radiation Imager (FY-3/MWRI) data with 10-km spatial resolution was utilized to reveal soil wetness and flood patterns of whole basin with the water surface fraction (WSF) method due to the penetration of microwave data on clouds. The Fengyun-3 Medium Resolution Spectral Imager (FY-3/MERSI) and Earth Observing System Moderate Resolution Imaging Spectroradiometer (EOS/MODIS) data with 250m spatial resolution were put forward to reflect the flood information in the area of main stream. The details of the flooded area were further analyzed based on the Radarsat and Landsat/TM with high resolution. The method shows promising results. The comparison result among WSF maps, and flood map from MERSI and MODIS images show a high consistency. Comprehensive and effective utilization of multi-source satellite data could provide reliable flood information for early flood warning, real-time monitoring of flood development, and rapid and accurate assessment of flood losses.