Yuniansyah, Dikky (2018) Pemodelan Run Up Tsunami Menggunakan Skenario Jamak (Studi Kasus Bandara Kulon Progo). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tsunami adalah suatu peristiwa rangkaian gelombang laut yang menjalar dengan kecepatan kurang lebih sebesar 900 km per jam dan biasanya ditimbulkan akibat dari adanya gempa bumi di dasar laut. Salah satu wilayah Indonesia yang rawan terjadi tsunami yaitu bagian Selatan Pulau Jawa. Salah satu daerah di bagian Selatan Pulau Jawa, yaitu kecamatan Temon, Kabupaten Kulon Progo, Yogyakarta sebuah lokasi rencana proyek New Yogyakarta International Airport (NYIA) atau Bandara Kulon Progo sedang disiapkan. Untuk itu perlu dilakukan upaya pemodelan tsunami dan mitigasi bencana untuk mengantisipasi datangnya bencana tsunami, diantaranya memprediksi daerah genangan akibat terjangan tsunami, waktu inundasi dan efektifitas sand dunes dan polder sebagai upaya mitigasi bencana. Penelitian ini memodelkan tiga skenario dampak Tsunami, yaitu : skenario kondisi eksisting (sebelum dibangun bandara), kondisi setelah dibangun bandara, dan skenario tsunami dengan mitigasi berupa sand dunes dan polder. Pemodelan dan analisa tsunami dilakukan dengan bantuan software Flow 3D. Hasil pemodelan menunjukkan tinggi genangan untuk skenario kondisi eksisting mencapai 16,03 m, sedangkan pada skenario bandara tanpa mitigasi didapatkan tinggi genangan mencapai 19,88 m, kemudian pada skenario bandara dengan mitigasi didapatkan tinggi genangan 17,22 m. Luas genangan tsunami untuk ketiga skenario pemodelan mencapai 5,2 km2. Waktu inundasi skenario pemodelan dari pantai menuju bandara adalah 1-2 menit. Penambahan sand dunes dan polder dapat meredam ketinggian tsunami sekitar 2 meter dengan waktu efektifitas yang bervariasi pada tiap titik observasi.
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Tsunami is a phenomenon in which sea wave travels at approximately 900 km/hour and is usually triggerred by earthquake on the seabed. An area of Indonesia prone to tsunami is the southern area of Java; one of which is sub-district of Temon, district of Kulon Progo, Yogyakarta, a location where the project of New Yogyakarta International Airport (NYIA) will be built. Therefore, tsunami and disaster mitigation modeling is needed in order to anticipate the occurrence of tsunami. The model will be used to predict the inundation area, the inundation time of tsunami and the effectiveness of sand dunes and polder as a form of Tsunami disaster mitigation. This study models three different scenarios, namely: i) scenario of the existing condition (before the airport was built), ii) scenario after the airport was built, and iii) scenario of tsunami using sand dunes and polder as the mitigation measures. Modeling and analysis of tsunami is conducted using Flow 3D software. From the modelling result, the run up height of the inundation in the scenario of the existing condition is 16.03 m; meanwhile, in the scenario of airport without mitigation measures, the height of inundation is 19.88 m. In the scenario of airport modeling with mitigation, the height is 17.22 m. The width of the inundation of the three scenarios is up to 5.2 km2. The inundation period of the modeling scenario from coast to the airport is about 1 – 2 minutes. The addition of sand dunes and polder can possibly reduce the height of the tsunami about 2 meters, varying in terms of time effectiveness at each observation point.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 551.470 24 Yun p-1 |
| Uncontrolled Keywords: | Tsunami, Bandara Kulon Progo, Run Up, Mitigasi, Inundasi |
| Subjects: | T Technology > T Technology (General) T Technology > TC Hydraulic engineering. Ocean engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Yuniansyah Dikky |
| Date Deposited: | 12 Mar 2018 01:46 |
| Last Modified: | 26 Jun 2020 03:40 |
| URI: | http://repository.its.ac.id/id/eprint/49689 |
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