Mapping of active landslides in Hokkaido using TS-InSAR images from the Geospatial Information Authority of Japan

Seiya Usami

Presentation information

[J] Oral

H (Human Geosciences ) » H-DS Disaster geosciences

[H-DS09] Human environment and disaster risk

Mon. May 27, 2024 9:00 AM - 10:15 AM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

convener:Hiroshi, P. Sato(College of Humanities and Sciences, Nihon University), Michinori Hatayama(Disaster Prevention Research Institute, Kyoto University), Takayuki Nakano(Geospatial Information Authority of Japan), Chairperson:Hiroshi, P. Sato(College of Humanities and Sciences, Nihon University)

10:00 AM - 10:15 AM

[HDS09-05] Mapping of active landslides in Hokkaido using TS-InSAR images from the Geospatial Information Authority of Japan

*Seiya Usami¹ (1.Hokkaido Research Organization)

Keywords:Active landlide, Distribution map, TS-InSAR images, Hazard map

In assessing the hazard risk of landslides, it is important to understand the location of active landslides. In this study, active landslide maps were created by overlaying TS-InSAR images covering Hokkaido released by the GSI on June 27, 2022, with the "Hokkaido Landslide Data Map" released by the HRO. As a result of the study, 345 active landslides were detected in Hokkaido, and their distribution showed regional features. In this presentation, we report on these results. In addition, we compare GNSS and TS-InSAR images of some active landslides and discuss the features of active landslides that were not detected in this study.