PEMODELAN TINGGI GELOMBANG TSUNAMI MENNGGUNAKAN DELFT3D DI PANTAI BANDEALIT JEMBER

Baby CItra Nusantari Wardana, Retno Utami Agung Wiyono, Gusfan Halik

Abstract


Bandealit Beach is a tourist attraction that is still very beautiful because it is included in the Meru Betiri National Park area which is located in Tempurejo District, Jember Regency. Apart from that, what makes the beach still beautiful is the infrequent number of tourists visiting these tourist attractions due to very limited access. However, behind the beauty of the beach, quite a lot of people live around the beach and there are also busy activities such as schools. Its location which is located on the south side of the island of Java directly facing the Indian Ocean is of course very possible for a tsunami to occur, considering that this beach was once affected by the Banyuwangi Tsunami in 1994. Therefore, this study aims to simulate a tsunami at Bandealit Beach using Delft3D-Flow to analyze the travel time and height of the tsunami. Tsunami modeling was carried out based on two scenarios, namely scenario 1 as model validation using the characteristics of the 1994 Banyuwangi Tsunami. Model validation calculations used the MAPE method to interpret the error percentage <10%. Scenario 2 models the worst PuSGeN earthquake with a moment magnitude of 8.7 according to BMKG. In modeling, 3 observation points are used. The simulation results show the height of the tsunami waves at each point based on the Tsunami Banyuwangi1994, namely 8.7 m, 9.1 m, and 10.4 m with a travel time around 32 -35 minutes. Then for the worst earthquake PuSGeN Mw 8.7, the tsunami heights were 15.4 m, 16.4 m, and 17.3 m with a travel time of 20 minutes.

Keywords


Tsunami simulatin; Delft3D; Bandealit beach

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References


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DOI: https://doi.org/10.24815/jarsp.v7i2.30399

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Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning).

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The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning).
Published by Universitas Syiah Kuala is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on work at http://www.jurnal.usk.ac.id/JARSP/index

 

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