Paper

Experiments on crush and abrasion of cobble gravels during transport

Yasukazu KOSUGE, Yuji HASEGAWA, Yoshifumi SATOFUKA and Takahisa MIZUYAMA　3

Process of establishment of the term “teppou‐mizu" and its relation with similar phenomena

Haruo NISHIMOTO and Josui MATSUDA　　12

Basic study on sediment rate measurement with a hydrophone on the basis of sound pressure data

Takuro SUZUKI, Hideaki MIZUNO, Nobutomo OSANAI, Ryosuke HIRASAWA and Yuji HASEGAWA　18

Technical Report

Sediment transport of landslide dam by overtopping erosion: Analysis by LiDAR data
　　　Kosuke YOSHINO, Taro UCHIDA, Keiji TAMURA and Toshiaki KOTAKE　27

Technical Notes

The debris flow sensor system utilizing steel check dam
　　　Takanori KAWAMURA, Hiroshi MORIYAMA, Mitsunori KATO and Keiji TAMURA　36