Vulnerability assessment of Tehran military centers against natural hazards: with emphasis on floods and earthquakes

abstract
Vulnerability assessment is one of the prerequisites of risk analysis in natural disaster management. Meanwhile, one of the sensitive and important uses in urban areas is military centers, which prepare vulnerability maps due to natural hazards and identify military centers at risk, leading to more optimal measures in times of crisis. . Therefore, the purpose of this study is to prepare maps of vulnerability caused by earthquakes and floods in order to identify military centers exposed to damage in different decision-making scenarios. To achieve this goal, first, the effective criteria for evaluating earthquake and flood vulnerability were placed in three groups: exposure, sensitivity, and adaptive capacity. Using the opinions of experts and the hierarchical analysis process model, the importance of each of the criteria was determined. Fuzzy functions and ordered weighted average method model have been used respectively to normalize the criteria map and prepare vulnerability maps in different scenarios. Also, the situation of military centers against natural hazards was evaluated. The results showed that the number of vulnerable military centers increases with the increase in the degree of ORness. The earthquake (flood) vulnerability maps showed that in ORness=0, out of a total of 37 military centers, 2 and 0 in the class with very high and high vulnerability, respectively, but in ORness=1, 20 and 32 centers in the class with Vulnerability was very high.