Monitoring Deformasi Permukaan Tanah Kawasan Ring Of Fire Berbasis Insar Time Series: Implementasi Visualisasi Pada Platform Webgis (Studi Kasus: Pulau Jawa)

Rahmansyah, Ferdian Zaki (2025) Monitoring Deformasi Permukaan Tanah Kawasan Ring Of Fire Berbasis Insar Time Series: Implementasi Visualisasi Pada Platform Webgis (Studi Kasus: Pulau Jawa). Other thesis, Instititut Teknologi Sepuluh Nopember.

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Abstract

Pulau Jawa sebagai kawasan Ring of Fire mengalami deformasi permukaan tanah signifikan akibat aktivitas tektonik dan vulkanik. Penelitian ini memantau deformasi menggunakan pendekatan Interferometric Synthetic Aperture Radar (InSAR) Time Series berbasis data Sentinel-1 (2019–2024). Pengolahan data dengan LiCSBAS mengungkap tren subsidensi dominan hal ini dibuktikan oleh nilai median dari velocity sebesar -0,95 mm/tahun, dengan nilai maksimal cumulative displacement hingga -601,59 mm dan kecepatan ekstrem -143,98 mm/tahun di area tertentu. Validasi hasil menunjukkan standar deviasi velocity <4 mm/tahun; RMSE displacement <10 mm, hasil validasi dengan data stasiun GPS CORS didapat, korelasi pearson antara nilai velocity displacement TS-InSAR dan GPS menunjukkan bahwa koefisien determinasi (R²) sebesar 0,1301. Implementasi WebGIS berbasis TerriaJS yang terakses di peta.its.ac.id berhasil memvisualisasikan pola deformasi secara interaktif dengan fitur time slider dan grafik displacement, serta diuji kelayakan melalui kuisioner USE Questionnaire berhasil memperoleh skor 88,72%, yang berarti masuk kedalam kategori sangat layak. Temuan kunci mengonfirmasi subsidensi sebagai ancaman utama di Jawa, sekaligus membuktikan efektivitas platform open-source sebagai solusi pemantauan deformasi berbasis WebGIS untuk mitigasi bencana dan tata ruang.
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Java Island, situated along the Pacific Ring of Fire, experiences significant land surface deformation due to tectonic and volcanic activities. This study monitors ground deformation using the Interferometric Synthetic Aperture Radar (InSAR) Time Series approach based on Sentinel-1 data from 2019 to 2024. Data processing using LiCSBAS reveals a dominant subsidence trend, as indicated by a median velocity of -0.95 mm/year, with maximum cumulative displacement reaching -601.59 mm and extreme velocity up to -143.98 mm/year in certain areas. Validation results show high reliability, with a velocity standard deviation of less than 4 mm/year and displacement RMSE below 10 mm, validation using GPS CORS station data shows that the Pearson correlation between the velocity displacement values from TS-InSAR and GPS yields a coefficient of determination (R²) of 0.1301. A WebGIS platform developed using TerriaJS, accessible at peta.its.ac.id, successfully visualizes deformation patterns interactively through time sliders and displacement charts. Usability evaluation via the USE Questionnaire yielded a score of 88.72%, categorized as Highly Feasible. Key findings confirm subsidence as a major geohazard across Java, while also demonstrating the effectiveness of open-source platforms as a viable WebGIS-based solution for deformation monitoring, disaster mitigation, and spatial planning.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Deformasi Tanah, InSAR Time series,WebGIS, Ring of Fire, TerriaJS, Land Deformation, InSAR Time series, WebGIS, Ring of Fire, TerriaJS
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Ferdian Zaki Rahmansyah
Date Deposited:	24 Jul 2025 07:18
Last Modified:	24 Jul 2025 07:18
URI:	http://repository.its.ac.id/id/eprint/121162

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