Vol. 73, No. 2, Ser. No. 349 July 2020
Contents
Papers
Methods for measuring deteriorated thicknesses of wood by static penetration tests used different steel pins of sediment in mountainous river
BAOYINARIBIJIHU, Yoshiharu ISHIKAWA, Katsushige SHIRAKI and Hiroki HARADA 3
Technical Paper
History and technical characteristics of historical sabo facilities in Bannai River, Hikagesawa and Kamakurasawa River, Niigata Prefecture
Yoji SAWA, Kiichiro OGAWA and Michiya IRASAWA 14
General Review
Comparative analysis of ordinances of Sabo（Erosion Control）designated area management
Mutsuo KAWAI 24
Research Note
A study on a method for detecting landslide areas automatically using constellation satellite optical images
Kazuya FUNAKOSHI, Satomi KAKUTA, Wakana YAGI, Masashi TAI,
Masayuki MATSUDA, Satoko HATTORI, Kazuo ODA and Jonghwan KIM 34
A study on rainfall index suitable for sediment disaster risk assessment in each region
Yasuhiro NOMURA, Soichi KAIHARA, Hiroaki TAKEMOTO, Taro UCHIDA and Hiroaki NAKAYA 42
Technical Note
Maintenance management plan for sabo facilities considering life cycle costs
Norio HARADA, Yoshifumi SATOFUKA and Takahisa MIZUYAMA 48