Risk Assessment of Heavy Precipitation at Jinjiang Airport Based on Information Diffusion Theory
To determine the risk range of extreme heavy precipitation events at the Jinjiang Airport and enhance the airport's ability to handle extreme heavy precipitation disaster weather,the Quanzhou Jinjiang Airport precipitation data during 1991 to 2020 is used,rainstorm by the ratio index of annual occurrence frequency of heavy rain,rainstorm and heavy,and the risk assessment of extreme heavy precipitation disaster is carried out by normal distribution diffusion method.The results show that the influence probability of extreme heavy precipitation(heavy rain,rainstorm or more)on the airport decreases with the increase of the risk level;the heavy rainfall days which account for less than 5％of the total rainfall days occur almost all the year round at the airport,and the risk ratio of rainstorm is 0.932 9 when the risk level is less than 1％,and the risk ratio of heavy rainstorm or above is 0.765 3.The frequent interference of heavy rainfall on flight safety of the Quanzhou Jinjiang Airport requires the refinement of risk management methods and the organization of training on the basis of early warning of heavy rainfall.
information diffusion theoryheavy precipitationthe degree of influencerisk assessment
NETL
NSTL
万方数据
