Remote sensing data
A large number of aerial photographs and satellite SAR images
covering the quake-hit areas had been acquired as soon as possible
since May 14, 2008. The multi-source and multi-resolution airborne
and satellite SAR images acquired for Wenchuan earthquake
have played important roles in damage information extraction at
early emergency stage. The characteristics of the SAR data and
ancillary data used in this study were listed in Tables 1 and 2.