Rohmah, Lutfiana Nur (2020) Analisis Run Up Akibat Tsunami dengan 3 Skenario Lokasi Gempa, Studi Kasus : Bandara Internasional Yogyakarta. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gelombang tsunami terjadi karena beberapa faktor, salah satunya adalah karena patahan lempeng yang mengakibatkan gempa di dasar laut seperti gempa yang terjadi 17 Juli 2006. Kekuatan gempa sebesar 6,8 SR dimodelkan sebagai pembangkitan gelombang tsunami dengan membuat elevasi muka air di sumber gempa untuk Initial condition. Simulasi dilakukan selama 1 jam 45 menit menggunakan software MIKE 21 Flow Model FM modul Hydrodynamics untuk melihat penjalaran dari sumber gempa menuju Bandara Internasional Yogyakarta. Proses kalibrasi dilakukan dengan mencari elevasi muka air model yang sampai di pesisir pantai sama dengan kejadian sesungguhnya yaitu sebesar 6 meter dengan cara mencari elevasi muka air, Manning’s Number, dan Eddy Viscosity. Setelah didapat Setting model yang sesuai, kemudian dilakukan pemodelan dengan Setting model yang sama tetapi dengan 2 skenario lokasi gempa yang berbeda. Skenario lokasi gempa pertama berada di selatan Bandara Internasional Yogyakarta dan skenario lokasi gempa 2 berlokasi di tenggara Bandara Internasional Yogyakarta. Analisa run up dilakukan di tiga titik potong yang berbeda dimana setiap titik potongnya akan diambil 11 data elevasi muka air tertinggi di setiap 100 meter. Hasil pemodelan tsunami menunjukkan ketinggian dan jangkauan run up di Bandara Internasional Yogyakarta akibat gempa 17 Juli 2006 sejauh 500 meter dari pesisir pantai, ketinggian dan jangkauan run up akibat skenario lokasi gempa selatan Bandara Internasional Yogyakarta setinggi 2,5 – 4,1 meter di runway dan lebih dari 1 km, sedangkan ketinggian dan jangkauan run up akibat skenario lokasi gempa tenggara Bandara Internasional Yogyakarta setinggi 1,5 - 3,2 meter di runway dan lebih dari 1 km.
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Tsunami waves occur due to several factors, one of them is due to plate faults that cause earthquakes on the seabed such as the earthquake that occurred on July 17, 2006. the strength of it is 6.8 SR modeled as a tsunami wave by creating water level elevations at the earthquake source for Initial Condition. The simulation was carried out for 1 hour 45 minutes using MIKE 21 Flow Model FM Hydrodynamics module to see the spread from the source of the earthquake to Yogyakarta International Airport. The calibration process is carried out by finding the water level elevation of the model that reaches the shore the same as the actual event that is equal to 6 meters by looking for the water level elevation, Manning’s Number, and Eddy Viscosity. After getting the appropriate model Settings, then modeling is doing with the same model Settings but with 2 different earthquake location scenarios. The first earthquake's scenario is located in the south of Yogyakarta International Airport and the second one is located in the southeast of Yogyakarta International Airport. Run up analysis is carried out at three different intersection points whereas each intersection point will take 11 highest water level elevation data at every 100 meters. Tsunami modeling results show the height and range of run-up at Yogyakarta International Airport due to the earthquake of July 17, 2006, as far as 500 meters from the coast, the height and range of run-up due to the earthquake location of scenario of earthquake location south of Yogyakarta International Airport is as high as 2,5 – 4,1 meters on runway and more than 1 km, while the height and range of run-up due to the scenario of earthquake location south of Yogyakarta International Airport is 1,5 - 3,2 meters on runway in height and more than 1 km.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSKe 627.58 Roh a-1 2020 |
| Uncontrolled Keywords: | Initial condition, MIKE 21 Flow Model FM modul Hydrodynamics, Run up |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | LUTFIANA NUR ROHMAH |
| Date Deposited: | 05 Jun 2023 03:58 |
| Last Modified: | 05 Jun 2023 03:58 |
| URI: | http://repository.its.ac.id/id/eprint/73216 |
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