Identification and Analysis of Tsunamigenic Volcanoes in Indonesia using Satellite-Based Earth Observation Data

Abstract

Geographically, geologically, hydrologically, and demographically, Indonesia is a disasterprone area because it is located on an active Earth's crust where there are five faults of the Earth's plates that meet, collide, and cause dynamic movements of the earth. Many of the major earthquakes and volcanic activity in Indonesia were in shallow regions, which trigger a tsunami that can kill thousands of people. To identify these tsunamigenic volcanoes, a multi-criteria analysis based on criteria from previous studies and historical tsunamigenic volcanic events is used. Using the value of the weights in calculating the potential level, the volcanoes that have a high potential to cause a tsunami are Banda Api, Batu Tara, Wetar Volcano, Iliwerung, Iya, Anak Krakatau, Rokatenda, Ruang, Serua/Legatala, Wurlali, and Pusukbukit. As a follow-up to this study, in-depth research needs a dataset that is more accurate on high potential volcanoes to define risk that can occur on the site. Besides that, data verification on site is needed to clarify the accuracy of this analysis. For areas close to settlement/population area, volcano monitoring is essential to minimize the risks that may occur in the surrounded area.