The Survey effective factors in vulnerability due earthquake in Informal District of city zones with application of GIS: Case study: 1 and 5 zones of Tabriz

The Earthquake Vulnerability one of the important challenges confront of big cities in Iran. Sensitivity of this matter reduplicate when the cities moreover exhaustion contain slums area and informal settlements. The Tabriz city one of the populous city in Iran that from earthquake risks on high Vulnerability position. Tabriz city like as other cities containing informal settlements and this sector establishment on active fault side. This sector of construction and urban planning (urban land use planning) aspects in the unsuitable position. While the earthquake happened as regards high population density and other effective factors on Vulnerability increasing due earthquake human disaster in this area can happened. This article surveyed 1 and 5 zone of Tabriz city that contain informal settlements between Tabriz city zones¡ from Vulnerability due earthquake for as much as earthquake nature and study it’s relation with four factors population density, construction density, constructions quality and type of the construction materials also for evaluation of Vulnerability amount and effective factors in Vulnerability used from geographic information system(GIS) and Analytical Hierarchy process(AHP) and for density estimation used from the kernel density estimation(KDE). Research results showed that 1 and 5 of Tabriz city zones because high population concentration, low constructions quality, constructions high ages and used from unresisting materials in opposition of earthquake and established in proximity of fault and slum texture in other side while the earthquake occurrence can endure irrecoverable damage.