Indonesia paleotsunami database: Concept and design

Abstract

Indonesia’s tectonic conditions are one of the regions in the world with the most active tectonic activity. As a result of these conditions, Indonesia is prone to earthquakes, tsunamis, and volcanic eruptions. Tsunamis are the most violent movements of ocean waves. The mechanism for tsunamis formation is through processes that generate shock waves, such as underwater earthquakes, underwater landslides, volcanic activity, and asteroid impacts. Indonesia has experienced a series of tsunami events that have caused thousands of casualties. Tsunami events are not fully recorded in human historical records. Unrecorded tsunami or paleotsunami events can be studied through the characteristics of paleotsunami deposits or related archaeological information about tsunamis. Knowing the history of tsunami events is essential to understand tsunamis frequency and intensity in the present. This study aims to conceptualize and design a historical database of tsunami occurrences in Indonesia. The database will be based on WebGIS. Tsunami event data is sourced from literature related to tsunami events, such as published books, journals, reports, final projects, and others. The results of database processing are 326 data on tsunami events in Indonesia. The WebGIS is an update for tsunami information media in Indonesia to be more comprehensive and informative.