Multi-hazard risk mapping for coupling of natural and technological hazards

Technological hazards induced by natural have a significant impact on human life and economy. Their power exceeds the of that caused them. However, most multi-hazard risk maps failed to incorporate technological when mapping multi hazard risk. To address this problem, we established hybrid assessment methodology calculates in three-step process. First, possible given region are identified hazard-forming environment analysis source investigation respectively. A scenario simulation is adopted analyze intensity scope these hazards. Second, triggered relationships among analyzed matrix. Then, radar graph calculate under coupling effect all region. Third, calculated aggregating land use data together. This was applied Huairou Science City (HSC), Beijing. The result shows joint action earthquake liquid ammonia leakage main reason for high central area HSC. developed study can clearly show different impacts each coupling, results better reflect actual disaster situation.