Abstract
In recent years, the rock fall disasters are taking place in large scale. So far, the investigations for the countermeasure against the rock falling have been mainly carried out through the interpretation of oblique photographs and field exploration. In many cases, however, the results obtained by these methods are often stereotyped and subjective. At present, there is an urgen tnecessity to carry out the investigation over the wide area of acute and dangerous slope land grasping it as a plane and with uniform accuracy. In this study, therefore, we discussed how to establish the investigation method by ground remote sensing and its possibility of applications, using thermal images of ground and aerial survey specifying a frequent rocksliding slope land as a model area, in an aim to perform safe and efficient investigation for the implementation of countermeasures against the rock fall.
