Massive earthquake countermeasures by establish muster point and migration path using network analysis in Matraman District, Jakarta, Indonesia

The issue of earthquake with magnitude 8 SR that threatens Jakarta has recently become a major concern due to the chance of catastrophic. This is closely related to the existence of a seismic gap located in Southern Java, Sunda Strait Megathrust. The seismic gap is a segment of an active fault known to produce a significant earthquake that shows no earthquake activities for an unusually long time. This situation implies that the moving crust is reserving potential energy which going to be release and resulting massive earthquake. The potential earthquake source located around 200 km from Jakarta which has densely populated and frequent annual disasters such as floods and fires. Matraman district is one of the densely populated areas in Jakarta with a population density of 319,291 per km2. Through GIS, this research uses network analysis methods to create an evacuation route in the event of a disaster. This method works with a cluster system to obtain the most effective paths in pre-determined zones. The evacuation route resulted from this analysis used 21 zones located in Matraman sub-district. Each zone has various evacuation time. The fastest time range between 1 to 3 minutes and the longest about 4 to 12 minutes. This evacuation route is also usable for SAR team and firefighter to reach the area of disaster.