Assessment of multi hazards in Semarang city

Abstract

Semarang city is the centre of the city for the people of Central Java province, where it has been transformed into a centre of economic and administrative government. The condition becomes vulnerable because Semarang city has at least four natural disasters. The Natural disasters also negatively impact for the people of Semarang city. The Natural disasters are floods, tidal flooding, landslides, and drought. To find out which areas are experiencing high levels of threat from the disaster, must be done by mapping multi hazards. Multi hazards mapping is done by using the method of weighting parameters and be processed by GIS from disaster-forming parameters. The next step, the result of mapping multi hazards be overlay to get the value of the level of hazards. To get assessment of Level multi natural hazards, the overlay of the hazards map can be done by two methods, GIS and AHP (Analytical Hierarchy Process) methods. The result will be obtained in high level of affected multi hazards area in the Semarang city is Genuk district, Semarang Utara district, and Tugu District. In wich total area in high level of multi hazards is 61944.14 hectares or 30.77% of total area Semarang city.