Flood Disaster Risk Analysis for Songhua River Basin Based on Theory of Information Diffusion

Flood disaster risk analysis, the essential of which is to estimate the probability distribution of flood disaster loss, is an important nonstructural measure for flood control and disaster reduction. In the paper, a frequency analysis method of flood disaster loss based on fuzzy mathematics theory of information diffusion with short time series of flood disaster samples is suggested for flood disaster risk analysis. With the support of historic disaster data, the method has been applied to flood disaster risk analysis for Songhua River Basin and turned out to be effective and practical.