Susanto, Leviana Orchid Fiskarini (2019) Analisis Perubahan Topografi Dasar Laut dan Arus Laut Pra dan Pasca Tsunami di Teluk Palu, Sulawesi Tengah. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
03311540000088_Undergraduate_Theses.pdf Download (3MB) | Preview |
Abstract
Teluk Palu merupakan daerah yang rentan terhadap gempa bumi. Pada September 2018 terjadi gempa bumi tektonik di kabupaten Donggala, Sulawesi Tengah yang mengakibatkan tsunami akibat longsor dasar laut. Dalam rekonstruksi pasca bencana, diperlukan studi lebih lanjut mengenai kondisi pasang surut, topografi dasar laut dan arus laut di perairan Teluk Palu untuk pemulihan fungsi prasarana dan sarana vital. Simulasi pemodelan arus menggunakan beberapa parameter seperti data batimetri, data pasang surut, data garis pantai, dan data debit air sungai. Simulasi dilakukan menggunakan dua skenario, pra tsunami pada tahun 2012 dan pasca tsunami pada Tahun 2018. Perubahan topografi dasar laut diamati dengan menganalisis perubahan kontur dan volume longsor bawah laut. Pasca terjadi tsunami tidak terjadi perubahan karakteristik pasang surut pada Teluk Palu dan ditemukan timbunan volume logsor bawah laut sebesar 12.466.252,630 m3 di Perairan Wani. Kecepatan rata-rata arus pasca tsunami pada area model 1, 2 dan 4 mengalami penurunan sebesar 0,01 m/s sedangkan pada area 3 terjadi penurunan kecepatan arus rata-rata sebesar 0,06 m/s. Pada saat pasang tertinggi, kecepatan arus rata-rata pra tsunami pada area model 1, 2 dan 3 mengalami penambahan kecepatan arus sebesar 0,01 m/s dan tidak terjadi perubahan kecepatan arus ratarata pada area 4.
=================================================================================================================================
Palu Bay is an earthquake-prone area. In September 2018 tectonic earthquake occurred in Donggala District, Central Sulawesi, which caused tsunami due to underwater landslides. In post-disaster reconstruction, further studies regarding changes in tidal characteristic, seafloor topography and ocean currents of Palu Bay are needed to restore the functions of vital infrastructure and facilities condition in affected areas. Simulation of current model uses several parameters such as bathymetry data, tide data, coastline data, and river water discharge data. Simulation conducted using two scenarios, pre-tsunami in 2012 and post-tsunami in 2018. seabed topography observed by analyzing changes in contour and the volume of underwater landslides. There was no tidal characteristics change in the Palu bay after the tsunami, and Wani water's underwaterlandslide volume was 12,466,252.630m3. At the lowest tide, the post-tsunami average current velocity in areas 1, 2 and 4 decreased by 0.01 m/s, while in area 3, the average current velocity decreased by 0.06 m/s. At the highest tide, the pre-tsunami average current velocity in the area of 1, 2 and 3 has an increased by 0.01 m/s and constant in area 4.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSG 526.98 Sus a-1 2019 |
| Uncontrolled Keywords: | Topografi Dasar Laut, Arus, Tsunami, Pemodelan Hidrodinamika |
| Subjects: | Q Science > QA Mathematics > QA911 Fluid dynamics. Hydrodynamics T Technology > T Technology (General) > T57.62 Simulation |
| Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Leviana Orchid Fiskarini Susanto |
| Date Deposited: | 05 Apr 2024 03:09 |
| Last Modified: | 05 Apr 2024 03:09 |
| URI: | http://repository.its.ac.id/id/eprint/65615 |
Actions (login required)
 |
View Item |