EARTHQUAKE BUILDING DAMAGE MAPPING BASED ON FEATURE ANALYZING METHOD FROM SYNTHETIC APERTURE RADAR DATA

This paper focused on the indirect economic losses caused by the Wenchuan earthquake in 2008 and evaluated the progress of restoration and reconstruction based on nighttime light images. Results show that the GDP has a quadratic function relationship with the total nighttime lights under normal conditions, and the economy of the disaster area after the earthquake showed unstable and turbulent development. This research provides a basis for macro-control of earthquake recovery and reconstruction.