2017 Volume 57 Issue 6 Pages 289-294
Recently, surface displacement monitoring using interferometric synthetic aperture radar （InSAR） analysis has been investigated by many researchers. InSAR analysis has a great advantage to observe spatial distribution of surface displacement by utilizing data acquired with radar installment on a satellite. In this study, we detected landslide surface displacements around Jinnosuke-dani, Bettou-dani, and Yuno-tani in Mt. Haku using InSAR analysis of ALOS-2 imageries. As a result of the analysis, we found landslide displacement with the amount of 5-10 cm in line of sight direction. The displacement areas detected by the analysis correspond to the landslide blocks interpreted by geological and geographical analysis, and our results identify the active landslide blocks of the region. These results demonstrate the effectiveness of InSAR analysis to monitor landslide displacements.
