Android Real Time Earthquake & Tsunami Warning Alert System Based on Open Data of Indonesia Government Agency of Geophysics

Abstract

There are approximately 4000 earthquakes happened in Indonesia per year, whereas earthquakes of a magnitude greater than 5.5, or earthquakes that can be physically felt on land, average around 70-100 per year, and destructive earthquakes around one to two times a year. Not all earthquakes cause tsunamis, but the majority of tsunamis are caused by earthquakes. Since the earth was formed, a number of tsunamis have been happening all over the world. The Aceh tsunami is one of the biggest tsunami history over past 2 decades which occurred on 26 December 2004, claimed the lives of around a quarter of a million people in areas surrounding the Indian Ocean. The very short tsunami arrival time of 10 - 60 minutes is a challenge for tsunami early warning. It also has a direct impact on evacuation procedures and means that evacuation times are very short as well. The objective of this study is to develop android real time earthquake & tsunami alarm as early warning system, evacuation directions and earthquake survivor detection for rescuer to reducing disaster risk. This study used the Research and Development method with the ADDIE (Analyze, Design, Development, Implementation and Evaluate) procedure. The result of this study the apps obtained less than 5 seconds respond time to proceed the earthquake & tsunami information from BMKG website to trigger early alarm in users android mobile phone. Android alert system more effective because it has a lower response time (< 5 seconds) than previous early warning system with a longer response time (13.48 seconds). In additions, developers improve the system not only distribute earthquake and tsunami information, but also provide evacuation route direction & survivor detection as a disaster risk reduction. Although in actual, this feature has the potential to be disrupted due to the large amount of user traffic. So it requires a large number of server resources if there are many active users.