Journal
SUSTAINABILITY
Volume 7, Issue 11, Pages 15099-15118Publisher
MDPI
DOI: 10.3390/su71115099
Keywords
debris flow; SPOT5; digital elevation model; analytic hierarchy process; fuzzy synthetic evaluation; hazard assessment
Funding
- State Key Program of National Natural Science Foundation of China [41330636]
- non-profit scientific special research funds of Ministry of Water Resources [201001008]
- Natural Science Foundations of China [41402242, 41402243, 40872170, 40902077]
- Jilin University's 985 project [450070021107]
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The outbreak of debris flows in a reservoir region can affect the stability of hydropower stations and threaten the lives of the people living downstream of dams. Therefore, determining the hazard degree of debris flows in a reservoir region is of great importance. SPOT5 remote sensing images and digital elevation models are introduced to determine the characteristics of debris-flow catchments. The information is acquired through comprehensive manual investigation and satellite image interpretation. Ten factors that influence debris flow are extracted for the hazard assessment. The weight of these factors is determined using the analytic hierarchy process method. As a multi-criterion decision analysis method, fuzzy synthetic evaluation is applied for hazard assessment.
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