The coastal lowland areas of Minami-Izu and Shimoda, Shizuoka Prefecture, Japan, have been inundated by at least two tsunamis with wave heights of 5-6m during the past 400 years. Previous studies have analyzed the stratigraphy and paleoenviromental setting of Holocene terrestrial deposits in these areas based on one outcrop and sediment cores (8-11m long) from 13 sites, searching for evidence of tsunami deposits. These analyses yielded no evidence for pre-historical tsunami deposits. In the

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... ent study, we examined sediment cores from new three sites in the coastal lowland areas of Minami-Izu and southwest Shimoda. As with the previous studies, we found no evidence for pre-historical tsunami deposits in the terrestrial deposits.