Population Mobility Network Characteristics and Its Influencing Factors under the Influence of Typhoon Bebinca—— A Case Study of the Yangtze River Delta Region

Abstract: With the increasing frequency of extreme weather events such as typhoons, the stability and resilience of the inter-city population mobility network is facing serious challenges. The study shows that the typhoon had a significant impact on the characteristics and patterns of the population mobility network in the YRD. First, during the typhoon, the network size and density decreased, long-distance mobility decreased and showing the characteristics of “small world”. Second, after the typhoon landfall, the population inflow to the central city dropped significantly. Then, network connectivity declines during the typhoon, but modularity increases.