@article{oai:kumadai.repo.nii.ac.jp:00029829, author = {宮縁, 育夫 and Miyabuchi, Yasuo and Tamai, Koji and Ogawa, Yasuhiro and 小川, 泰浩 and Shimizu, Takanori and 宮縁, 育夫 and Miyabuchi, Yasuo and 玉井, 幸治 and Ogawa, Yasuhiro and 小川, 泰浩 and 清水, 貴範}, issue = {2}, journal = {地形}, month = {Apr}, note = {application/pdf, 論文(Article), Storm runoff and sediment discharge during the typhoon 200514 (Nabi) were monitored in three forested basins (WS1: 6.6 ha, WS2: 9.2 ha, WS3: 8.2 ha) at the Sarukawa Experimental Watershed located in Mivazaki Prefecture, southwestern Japan. Dormant geology in the area is chaotic beds of mudstone and sandstone within the Shimanto Belt (an accretionary prism). The total amount of precipitation associated with the typhoon storm event was 1,156 mm. Although the maximum 1-hr precipitation was 40.5 mm/hr and not exceptionally higher than average annual record, high and intense rainfall (precipitation >23 mm/hr) continued 19 hours. During the storm event, the greatest peak and total catchment runoff was observed in WS1 and WS3 and direct storm runoff coefficient became 83 and 98% respectively. Sediment discharge volumes measured by deposits behind weir ponds of WS1, WS2 and WS3 were 2.5, 7.3 and 1.9 m3/ha, respectively. Several slope failures occurred on hillslopes and zero-order hollows in WS2. Hence, the greatest sediment discharge observed at the weir of WS2 potentially associated with remobilization of deposited material within the channels and riparian zones, because most of sediment due to slope failures deposited on the foot of hillslopes. Continuous monitoring of runoff and sediment discharge will help to understand the spatial and temporal variations of sediment supplied, deposit and transport in forested watersheds.}, pages = {127--142}, title = {九州南部の森林流域における2005年台風14号豪雨による出水と土砂流出}, volume = {28}, year = {2007}, yomi = {ミヤブチ, ヤスオ and オガワ, ヤスヒロ and ミヤブチ, ヤスオ and オガワ, ヤスヒロ} }