Jamrud Aminuddin, Tika Ayunda Vita, Ilham Alimuddin, Pakhrur Razi, Indra Riyanto, Asif Awaludin, Albert Sulaiman, Joko Widodo, Babag Purbantoro, Vicca Karolinoerita, Destika Cahyana, Rachmat Abdul Gani, Rufaidah Qonita Muslim
One of the natural phenomena that often occurs in Indonesia is earthquakes, one of which is in West Sulawesi Province. Land conditions in the province experienced many changes after the earthquake in 2021 and 2022. Considering that the analysis of Sentinel-1A image data uses the DInSAR (Differential Interferometry Synthetic Aperture Radar) method in research in several ground conditions, which can describe in detail the ground deformation, then in this research, further exploration will be carried out regarding this method to analyze post-earthquake soil conditions in West Sulawesi in 2021 and 2022. This research generally aims to monitor soil deformation where the earthquake occurred using Sentinel-1A satellite imagery processed using the Differential Interferometry Synthetic Aperture Radar (DInSAR) method. Deformation observations using four pairs of Sentinel-1A images with data acquisition in 2020–2022 Level-1 SLC (Single Look Complex) with dual polarization (VV: Vertical-Vertical and VH: Vertical-Horizontal) and Interferometry Wide acquisition mode (IW). Based on the results of data processing that has been carried out, it is known that the land deformation that occurred before the earthquake occurred was a rise in land level of 0.002 meters and a decrease in land level of −0.078 meters. At the time of the earthquake, the land level dropped by −0.370 meters, and the land level rose by 0.670 meters. So, the average deformation due to an earthquake is a rise in land level of 0.130–0.360 meters and a decrease in land level of −0.100 to −0.550 meters. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.
Faculty of Mathematics and Natural Sciences, Department of Physics, Universitas Jenderal Soedirman, Jl. dr. Suparno 61, Purwokerto, 53122, Indonesia; Faculty of Engineering, Department of Geological Engineering, Universitas Hasanuddin, Jl. Poros Malino Km 6, Sungguminasa, 92171, Indonesia; Center of Disaster Monitoring and Earth Observation, Physics Department, Universitas Negeri Padang, Padang, 25131, Indonesia; Center for Environmental Studies, Universitas Budi Luhur, Jl. Cileduk Raya 99, Jakarta Selatan, 12260, Indonesia; Research Center for Climate and Atmospheric, National Research and Innovation Agency, Jl. Sangkuriang, Dago, Kecamatan Coblong, Bandung, 40135, Indonesia; Research Center for Geoinformatics, National Research and Innovation Agency, Jl. Sangkuriang, Dago, Kecamatan Coblong, Bandung, 40135, Indonesia; Research Center for Food Crops, National Research and Innovation Agency, Kawasan Sains dan Teknologi (KST), Dr. (H.C) Ir. H. Soekarno Jl. Raya, Jakarta-Bogor KM. 46, Cibinong, West Java, Bogor, 16915, Indonesia
