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In the early morning of September 6th, 2018, an intense earthquake struck Hokkaido Iburi-Tobu area. By this earthquake, many landslides occurred and claimed 36 lives. The landslide numbers reached 6,000 and mostly they are shallow landslides moving down of the air-fall pumice layer from Tarumai volcano which erupted ca. 9,000 years ago. However, southeast of the area, deep-seated landslides of dip-slipping type are also found.
Yamagishi et al. (Wed,) studied this question.