Assessment of seismic intensity in the Pishan earthquake extreme disaster area based on UAV images

On July 3, 2015, An earthquake （M_S6.5） occurred near Pishan county （37.6°N, 78.2°E）, Hotan Prefecture Xinjiang Uygur Autonomous Region, China, with a focal depth of 10 km. Using UAV remote sensing images and field investigation information, seismic damage information in the disaster area is extracted. Seismic intensity remote sensing quantitative assessment method is used to evaluate earthquake intensity in the disaster area. The results show that the remote sensing assessment method for seismic intensity of multi-structure types of buildings in Xinjiang has been improved by combining the real data of earthquake field investigation. The results of remote sensing assessment of seismic intensity in Pishan earthquake-stricken area are consistent with the results of field investigation, and the seismic intensity in this area is consistent with that in Pishan earthquake intensity map published by China Earthquake Administration. The improvement of this method can serve for the future remote sensing assessment of seismic intensity, and provide a basis for the application of the UAV remote sensing technology in Xinjiang in the future.