Abstract
While aerial photos were useful in identifying damage levels of the tsunami by visual interpretation, the interpretation of the whole damaged area required plenty of time and manpower. Meanwhile, high-resolution satellite images were used in identifying the damages, with the comparison of pre- and post- quake images enabling us to identify the reality of the destruction. In such ways, remote sensing data hold potential in the field of large earthquake disaster management. However, their products were seldom used in tsunami damaged sites. These real situations have shown us the importance of appropriate preparation for making remote sensing data useful to a large disaster.