Khairunnisa, Salsabila (2025) Metode Time-Series InSAR untuk Analisis Deformasi di Daerah Rawan Bencana Gempa Bumi (Studi Kasus : Kabupaten Sukabumi, Cianjur, Bandung, dan Garut). Other thesis, Instiitut Teknologi Sepuluh Nopember.
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Abstract
Bumi merupakan planet dinamis yang permukaannya terus mengalami perubahan akibat berbagai proses geologi yang berlangsung sejak miliaran tahun lalu. Ketika lempeng-lempeng pada kerak bumi bergerak, energi elastis akan terakumulasi di zona batas lempeng hingga mencapai titik di mana material batuan tidak mampu lagi menahan tegangan. Pada saat inilah deformasi terjadi, menghasilkan pergerakan patahan atau sesar yang memicu gempa bumi. Gempa bumi adalah peristiwa berguncangnya bumi karena pergerakan atau pergeseran lapisan batuan pada kulit bumi secara tiba-tiba akibat pergerakan lempeng-lempeng tektonik. Pergerakan tiba-tiba dari lapisan batuan di dalam bumi yang menghasilkan energi dan dapat dipancarkan ke segala arah yang berupa gelombang gempa bumi. Pemahaman yang mendalam tentang deformasi di Indonesia menjadi sangat krusial dalam meningkatkan kesiapsiagaan masyarakat dan pemerintah terhadap bencana gempa bumi. Identifikasi deformasi akibat gempa bumi sangat penting karena memberikan informasi tentang pergerakan dan tekanan di dalam kerak bumi yang bisa memicu gempa. Pada penelitian tugas akhir ini akan menggunakan pengolahan data citra satelit SAR dengan metode Time Series InSAR untuk pemantauan deformasi yang akan divalidasi melalui pengamatan terestris menggunakan Global Positioning System (GPS) untuk memberikan besar nilai perpindahan absolut dan mengetahui selisih pemantauan deformasi antara hasil pengolahan metode Time Series InSAR dan pengukuran GPS. Berdasarkan pengolahan data yang telah dilakukan, didapatkan mean velocity sebesar 5,2 mm/tahun berdasarkan pengolahan Time Series untuk Wilayah Jawa Barat. Sedangkan berdasarkan hasil pengolahan GPS didapatkan mean velocity sebesar 19,370 mm/tahun dengan menggunakan 21 stasiun GPS yang tersebar di Jawa Barat. Selisih yang cukup signifikan ini diakibatkan oleh displacement yang dihasilkan oleh Time Series InSAR masih terdapat noise seperti noise yang diakibatkan oleh bangunan tinggi karena mengingat Jawa Barat merupakan salah satu provinsi dengan jumlah penduduk terbanyak di Indonesia.
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Earth is a dynamic planet whose surface is constantly changing due to various geological processes that have been occurring for billions of years. When the plates of the Earth's crust move, elastic energy accumulates at the plate boundaries until it reaches a point where the material can no longer withstand the stress. At this point, deformation occurs, causing the movement of faults or fractures that trigger earthquakes. An earthquake is the shaking of the Earth caused by the sudden movement or displacement of rock layers in the Earth's crust due to the movement of tectonic plates. The sudden movement of rock layers within the Earth generates energy that can be transmitted in all directions in the form of earthquake waves. A deep understanding of deformation in Indonesia is crucial in improving the preparedness of the community and government for earthquake disasters. Identifying deformation caused by earthquakes is very important because it provides information about movement and pressure within the earth's crust that can trigger earthquakes. In this final project, satellite SAR image data processing using the Time Series InSAR method will be employed for deformation monitoring, which will be validated through terrestrial observations using the Global Positioning System (GPS) to determine the absolute displacement values and identify the differences in deformation monitoring between the results of the Time Series InSAR method and GPS measurements. Based on the data processing conducted, a mean velocity of 5.2 mm/year was obtained using Time Series processing for the West Java region. Meanwhile, based on GPS processing results, a mean velocity of 19.370 mm/year was obtained using 21 GPS stations spread across West Java. This significant difference is caused by the displacement generated by Time Series InSAR still containing noise, such as noise caused by tall buildings, considering that West Java is one of the provinces with the largest population in Indonesia.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Deformasi, Time Series InSAR, Sesar Aktif, Daerah Rawan Bencana, Gempa Bumi Deformation, Time Series InSAR, Active Fault, Disaster Prone Area, Earthquake |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography > GA102.4.R44 Cartography--Remote sensing G Geography. Anthropology. Recreation > GB Physical geography > GB651 Subsidences (Earth movements) |
| Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Salsabila Khairunnisa |
| Date Deposited: | 25 Jul 2025 01:54 |
| Last Modified: | 25 Jul 2025 01:54 |
| URI: | http://repository.its.ac.id/id/eprint/121462 |
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