Modelling since the earthquake vulnerability of urban areas (Case Study: Tehran District Three)

Earthquake is one of the most disastrous natural calamity in present age which has been demonstrated its importance objectively. Therefore, getting prepared to deal have with always such crisis affected through identifying vulnerable spots and eliminating them are effective strategies in reducing the damage caused by an earthquake. Many Iranian cities are located in the areas with medium or high relative risk of earthquake. Tehran city, especially area 3, has high risk in earthquake danger, Because so many active faults lies around this area. It is necessary to evaluate vulnerable arenas for substantial planning of decreasing vulnerability of the buildings and representing a clear image from earthquake occurrence and its aftermath. In this study, vulnerability of context in area3, Tehran, in the time of earthquake occurrence has been modulated. The paper methodology is a descriptive- analytic method which through ANP models and analysis of network in Geographic Data system has modulated and evaluated vulnerability in urban context of area 3. The results showed that from 2296 hectare of the whole of area, about 36.2 percent lie in very high and high condition, about 30.8 percent lie in intermediate condition and about 33 percent lie in very low and low condition. The space distribution of vulnerability related to northeastern and east of this area that have cumulous residential context. On the basis of the study results, with considering the problems of vulnerable residential context, Emergency Management of earthquake will be an effective solution for context maintenance and decreasing damages of earthquake occurrence in this context.