Year: 2004
Type: article
Abstract: In this paper, a 1-D governing equations proposed by Egashira et al. is put forward first to describe the mechanics of debris-flow. Debris-flow simulations were conducted in order to understand what happens when rainfall occurs to cause numerous landslides on steep river basin, supposing several realistic occurrences in several tributaries. Multiple debris-flow surges were observed in 1999 San Julian debris-flow event, which was simulated in different contexts. The simulated results suggest that the different possible sequences can produce different amounts of sediment volume. Maximum sediment-volume difference between independent and dependent predictions was 0.12×106m3, which is very large and cannot be neglected. This shows that the order of debris flow occurrences should be taken into account for simulating debris-flow behavior at the fan-head.
DOI: 10.2208/prohe.48.913
Authors: Rabindra OSTI, Shinji EGASHIRA, Takahiro ITOH
Institution: Ritsumeikan University
Language: English
Subfield: Management, Monitoring, Policy and Law
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1986244452