TXT-tool 1.081-2.1: Landslide mapping through the interpretation of aerial photographs

Abstract

Topography created by landslides is widely distributed. Landslide risk evaluation is very important for mitigating or preventing these natural disasters, and finding facts can be very difficult. We here describe the techniques for aerial photo interpretation and explain the results. Sometimes, we “can’t see the forest for the trees.” This manual will clearly and practically explain the following: (1) why stereo pair interpretation is necessary; (2) how to perform stereo pair interpretation with aerial photos etc. to determine the landslide area; (3) what can be learned using this method of interpretation; (4) how landslide motion characteristics can be ascertained once interpretation of landslide micro-topography is performed; (5) once this is ascertained, how to rationalize landslide surveys and countermeasures.