Study on Spatial Distribution of Flood Peak Modulus in Hubei Province Based on Large and Medium-Sized Reservoirs
The design flood in the data-deficient areas of Hubei Province is often indirectly calculated by the design rainstorm.However,the flood rationality analysis often lacks a reference distribution map of flood peak modulus,which creates significant in-convenience in practical work.Therefore,this study selected 339 large and medium-sized reservoirs in Hubei Province.By calcu-lating the flood peak modulus at different frequencies,the study drew a spatial distribution map of flood peak modulus in Hubei Province.Additionally,the study systematically analyzed the spatial distribution law of flood peak modulus at different frequencies in Hubei Province.The results show that the average flood peak modulus increases sequentially for return periods of 50 years,100 years,1 000 years,and 2 000 years in Hubei Province.As for spatial distribution,the flood peak modulus of each fre-quency in Hubei Province is generally low in the northwest and high in the southeast.This pattern shows a certain positive corre-lation with the occurrence times of large-scale precipitation and a certain negative correlation with the altitude of Hubei Province.The results of this study could provide references for design flood estimation in ungauged areas and for the rational analysis of floods in Hubei Province.
万方数据
维普
