LANDSLIDE DETECTION METHOD BY INSAR ANALYSIS AND ITS APPLICABLE RANGE

Abstract

The landslides, triggered by torrential rain due to Typhoon Talas in 2011, caused enormous casualties and huge economic losses on the Kii peninsula. It is important to detect landslide activity at an early stage in order to reduce such damage. In this study, we used InSAR analysis images using ALOS-2 data to detect landslides in the area. 3D-GIV analysis was also used for comparison. And then, based on the detection findings, we conducted field surveys in order to support our findings. As a result, we have confirmed that this method was effective. However, there was a possibility of missing slope movements with this method alone.