Using GIS data and satellite images to manage hazard zone in earthquake

Hamoon Fathi, Mohammad Salman Ghavami

Abstract


One of the quickest and most efficient methods to study urbanism conditions and determine critical conditions of regions and rate of losses after earthquake is the use of aerial photos. The critical conditions are more severe in cities and mountainous regions due to the steep slope of traffic routes, snow and frosting, and use of aggregates. Using satellite images and GIS maps different regions were classified into three categories. The zoning was based on the route, slope, materials, construction, and population density, as well as the map of facilities, power lines, water and wastewater networks, and gas pipes. The critical conditions for each region were defined numerically and the resulting figures were summed up based on the maps of different zones. However, each figure was assigned to a certain portion of the map. With an increase in the number of maps with different zonings, the critical areas and figures changed.

Keywords


satellite images; GIS maps; hazard zone; earthquake management; Urbanism System

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