ASSESSMENT OF TSUNAMI HAZARDS LUWUK DISTRICT, BANGGAI REGENCY, CENTRAL SULAWESI
Luwuk District is the center government in Banggai Regency, Central Sulawesi which has a high risk of earthquakes and tsunamis due to its location in an active fault zone both at sea and land due to the activity of three main plates of world (Daryono, 2010). Therefore, in this study a numerical simu...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/52594 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Luwuk District is the center government in Banggai Regency, Central Sulawesi which has a high risk of earthquakes and tsunamis due to its location in an active fault zone both at sea and land due to the activity of three main plates of world (Daryono, 2010). Therefore, in this study a numerical simulation will be carried out to acces the tsunami hazard due to the 2000 Peleng Tsunami on May 4, 2000 for Scenario-1 and the hypothetical earthquake in Tolo Bay for Scenario-2 with focus on the study area in the coastal area of Luwuk District, Banggai Regency, Central Sulawesi. Numerical simulation was run using COMCOT v 1.7 program for 2 hours.
The simulation results show that the distribution of the maximum tsunami height and tsunami arrival time that reaches the coastal area of Luwuk District based on Scenario-1 is 0.99 m and Scenario-2 is 1.18 m, with the tsunami arrival time based on the results of Scenario-1 is 14 – 21 minutes and Scenario-2 is 9 – 19 minutes. The maximum tsunami inundation height in the coastal area of Luwuk District based on Scenario-1 is 0.67 m and Scenario-2 is 1.08 m. The area of submerged Luwuk District in Scenario-1 is 5.2 km2 (0.85%) and in Scenario-2 is 8.12 km2 (1.33%) of the 609.70 km2 area of Luwuk District. Based on the tsunami intensity scale according to Papadopoulus and Imamura (2001), Luwuk District is included in the IV tsunami intensity scale based on Scenario-1 and the V tsunami intensity scale based on Scenario-2. Based on the tsunami hazard level of Latief (2012), Luwuk District has a very low tsunami hazard level based on Scenario-1 and very low to low tsunami hazard level based on Scenario-2.
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