Study on Typhoon Hazard Integrated Scale Model, Taking Zhanjiang City, Guangdong Province as Example

Abstract:

The existing hazard scale classification methods of disaster warning standards in China are often based on single hazard intensity, while a typhoon disaster of coastal regions is the result of multiple induced hazards including wind, precipitation, storm surge and wave. Taking Zhenjiang City, Fujian Province as example, based on CMA Best Track Dataset of the Northwest Pacific, 131 historical typhoons that affected Zhenjiang City are extracted, and the corresponding windfield, precipitation field, storm surge tide and wave height are reconstructed. By building regional characterized hazard indicators for the above four hazards, the relationship between historical typhoon losses and the indicators are explored. The development of the integrated typhoon hazard scale model for coastal regions can be helpful to local disaster mitigation departments to more accurately assess the risk of typhoon disasters and ensure the rational use of relief supplies.