Activities and analyses on the 2018 Hokkaido Eastern Iburi Earthquake

Abstract

The 2018 Hokkaido Eastern Iburi Earthquake brought about great numbers of landslides in the broad area of the eastern Iburi region, Hokkaido, especially Atsuma town. As emergency disaster response to the earthquake, PASCO Corporation carried out 1) taking oblique aerial photographs, 2) automatic extraction of landslides using SPOT6 images, 3) detection of surface deformation with DInSAR analysis and 4) field surveys based on DInSAR analysis. We detected landslides from the broad area quickly by using optical satellite images and evaluated topographic changes before and after the earthquake.