Dual Mitigation System: Database System Combination of EWS and APRS for Disaster Management (Case Study: Malang Southern Coast)

Malang Southern Coast is one of the areas highly potential in earthquake and tsunami. An effective mitigation system is needed to manage them. Dual Mitigation System is a system combining Indonesia Tsunami Early Warning System (INA-TEWS) and Automatic Packet Reporting System (APRS). INA-TEWS is a warning system when the earthquake or tsunami takes place. APRS is a radio system to share information digitally. Radio wave can work in emergency situation. The methodology used is by analyzing earthquake data as a foundation of location determination to Dual Mitigation application system. The location of Dual Mitigation System was tested by evacuation process speed and information of APRS. The results show that this system is an effective early warning system employing INA-TEWS data and it gives evacuation process in about 4-6 minutes and 7-10 minutes faster using vehicle and without vehicle by APRS compared to the existing conventional method.