Volcanic eruption (Kusatsushiranesan and Shinmoedake)

Abstract

Changes in terrain are one of the indicators of the scale of volcanic eruption. But, flying over a crater immediately after the eruption is dangerous. In such a case, surveying by SfM/MVS method using multiple oblique images is effective, and 3D models, ortho images, DSM from photos of safe places could be created. Here, we introduced examples of the Kusatsushirane eruption in January 2018 and the Shinmoedake eruption in March, 2018. Both of them were able to be grasped the scale of eruption safely and timely.