Vol. 73, No. 1, Ser. No. 348 May 2020
Contents
Papers
Study on river bed variation calculation focusing on motion initiation condition
of sediment in mountainous river
Satoshi NIWA, Taro UCHIDA and Yoshifumi SATOFUKA 3
Long-term effects of soil conservation works on soil erosion on a hilly beech forest slope with an understory impoverished by deer browsing
Jinsheng SUN, Yoshiharu ISHIKAWA, Katsushige SHIRAKI, Taeko WAKAHARA and Yoshimi UCHIYAMA 15
Technical Paper
Reinforcement basis design of Daigenta river sabo dam No. 1 based on result of decrepit research
Shoichi WATANABE, Atsushi MORISHITA, Michiya IRASAWA, Chihiro EGAWA, Takeshi SHIMA, Hirohisa MURAMATSU, Koji OHASHI, Masaaki NAKANO, Yukari NAKAMURA and Yoshio NAKAMURA 25
General Review
History of sediment disasters and sabo projects in the Yomase River basin
Kazuhiko NAKANE, Kimio INOUE, Takao FUJII, Masaaki KINOSHITA, Makoto KITAHARA, Masashi TASHITA and Junichi KANBARA 32
Research Note
Preliminary study on quantitative estimation of sediment-related disasters using the return period derived from the current Japanese early warning system
Yasuhiro SHUIN, Nobuaki KATO, Norifumi HOTTA and Masakazu SUZUKI 40
Technical Note
Method of making a hazard map based on topography by residents
Takeharu SATO and Aoi ISE 45
Disaster Report
Sediment disasters caused by Typhoon Hagibis in Minami-Saku District, Nagano Prefecture
Shinya HIRAMATSU, Yutaka GONDA, Gen FURUYA, Taijiro FUKUYAMA, Osamu FUJIMOTO, Kazutoshi SAKAGUCHI, Takao FUJII, Koichi IKEBE, Tsutomu MIIKE, Ryunosuke NAKANISHI, Kazuyuki ONO, Junji KENMOCHI, Yasuhiro YAMADA 50