Abstract
This paper describes new findings about probable maximum precipitation (PMP) in Japan on the basis of spatial analysis of radar rainfall provided by the Japanese Meteorological Agency (JMA), Ministry Land,Infrastructure, Transport and Tourism (MLIT). The depth-area-duration (DAD) analysis provides PMP estimates for all over Japan. This paper has renewed the DAD relationship for the area of 0 to 32400 km2 as well as rainfall duration of 1 to 24 hr. A case study for the Kii Peninsula, which was much damaged by severe storm, floods, landslides and debris flows brought by Typhoon Talas that attacked Wakayama, Nara and Mie Prefectures in September 2011, shows an example of PMP estimation in the region and verifies the flood took place in the Kumano (Shingu) River in the Peninsula in terms of probable maximum flood.
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