Author(s): Hajime Nakagawa; Tamotsu Takahashi; Yoshifumi Satofuka
Linked Author(s): Hajime Nakagawa
Keywords: Debris flow; Numerical simulation; Sediment disaster; Landslide; Harihar
Abstract: A severe debris flow disaster occurred on the Harihara River, Izumi City, Kagoshima Prefecture, Japan about midnight of June 10, 1997. Twenty-one persons were killed, and 18 houses destroyed by this flow which, due to heavy rainfall, caused a massive landslide. Residents were aware that an extraordinary phenomenon was occurring in the river but did not take refuge, resulting in much material and human damage. A numerical simulation model to explain the behavior and the depositional processes of the debris flow is developed. The actual phenomena such as a sediment deposition area and a thickness of deposits were fairly well explained by the calculation.
Year: 1999