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Determination of Inundation Zone and Prediction of Tsunami around the Sunda Strait Based on the Tsunami Model Using Artificial Intelligence
Naomi Oktavianti, Muhammad Rizqy Septyandy, and Tito Latif Indra

Program Study Geophysics
Program Study Geology
Department of Geography
Universitas Indonesia


Abstract

Historically, the Sunda Strait has experienced several tsunamis recorded in the tsunami catalog caused by several geological phenomena. One of the last tsunami events in the Sunda Strait was the tsunami on December 22, 2018. The condition of bathymetry, coastal topography and high rainfall were some of the trigger factors for tsunamis in the Sunda Strait in addition to the eruption of Mount Anak Krakatau. To anticipate a tsunami in the future, a model of the height of tsunami waveforms that arrived at the coast was made. This study focused on producing rapid predictions of tsunami waveforms arriving at the coast using data signals recorded when a tsunami occurs due to landslide sub-marine. The remarkable training speed requires that it can be used to run in real time conditions and can be used as a tsunami early warning system in near-field tsunami events on the west coast of Banten. The proposed method used non-linear relationships by utilizing Sunda Strait bathymetry data, tide gauge signals, and coastal topography along the west coast of Banten, as well as rainfall during the past tsunami. Therefore, it becomes an advantage compared to ordinary inversion analysis that uses linear assumptions. The results of this study indicate that the extreme machine learning method produces more accurate results with a faster time compared to the inversion method in the propagation, tsunami run-up, and inundation zones on the west coast of Banten. In addition, the uncertainty analysis produced by our model proves that this method is robust and reliable, resulting in a model that can be used as a reference for tsunami safety zones by the local government.

Keywords: Tsunami, landslide sub-marine, extreme machine learning, Sunda Strait, inundation zone

Topic: Coastal Degradation and Coastal Hazard

Link: https://ifory.id/abstract/jL9xGkTud4D3

Conference: The 2nd International Conference on Maritime Sciences and Technology (MSAT 2019)

Plain Format | Corresponding Author (Muhammad Rizqy Septyandy)

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