抄録
Typhoon Nabi (No.14) which hit Japan in September, 2005 exposed her to danger for many hours. The maximum hourly rainfall was not so great, but continuous rainfall during 72 hours was over 500 mm in each area where suffered from severe damages. This typhoon caused incidences of 116 debris flows, 185 slope failures, 30 landslides. On account of that, 19 people were killed in Kagoshima, Miyazaki and Yamaguchi Prefecture, 3 people were missed in Oita Prefecture, 79 houses were destroyed completely and 21 houses were partially destroyed in Japan. Especially, severe damages were caused in Kyushu Region by greatly high continuous rainfall of this typhoon. Besides this region, 10 debris flows and a landslide occurred in Chugoku Region (509 mm of the maximum continuous rainfall, Yamaguchi Prefecture), and 29 slope failures, 7 debris flows and 3 landslides occurred in Shikoku Region (1203 mm of the maximum continuous rainfall, Tokushima Prefecture). To mention another feature of disasters by Typhoon Nabi, many large scales of landslides occurred in Miyazaki Prefecture. Especially a greatly large scale of landslide occurred on Mt. Wanituka in Tano Town. The total amount is estimated 5.61×106 m3 as collapsed soil, residual soil is estimated 3.52 ×106 m3, sediment deposition is estimated 1.08×106 m3.
