Analysis of Vertical Deformation and Potential Formation of New Faults Cause by Earthquake Using the DInSAR Method (Case Study: 2022 Cianjur Earthquake)
DOI:
https://doi.org/10.52562/injoes.2023.800Keywords:
DInSAR, Synthetic Aperture Radar, Earthquake, CianjurAbstract
In this study, we focus on the repetitive nature of earthquakes along known fault lines and their potential to create new fault segments. Our primary aim is to enhance our understanding of fault patterns and distribution, facilitating more efficient and accurate earthquake disaster mitigation efforts. Our research specifically targets the vertical deformation resulting from the 2022 Cianjur Earthquake. To achieve this, we employed a sophisticated technique involving data processing from the Sentinel 1A satellites using the Differential Interferometric Synthetic Aperture Radar (DInSAR) method. This method allowed us to derive earthquake-induced displacement values in meters with an impressive level of accuracy, down to the centimeter scale. Our analysis revealed a conspicuous fringe pattern in the interferogram phase data, which did not align with the nearby Cimandiri Fault. This discrepancy led us to suspect the emergence of a new fault or fault segment. By comparing Sentinel 1A satellite images before and after the earthquake, we observed phase differences ranging from -3.112 to 3.117 phases. These recurring phase differences clustered at coordinates 6?48'48" South Latitude and 107?06'05" East Longitude, pinpointing the epicenter of the Cianjur earthquake on November 21, 2022. Furthermore, we calculated line-of-sight (LoS) displacement values ranging from 0 to minus 102 millimeters, indicating vertical subsidence in the vicinity of the 2022 Cianjur earthquake. In conclusion, our research underscores the utility of the DInSAR method for assessing Earth's surface deformation patterns, making it a valuable tool for various earthquake-related analyses.
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Badan Nasional Penanggulangan Bencana. (2019). Risiko Bencana Indonesia.
Bayik, C. (2021). Deformation analysis of 2020 MW 5.7 Karlova, Turkey, earthquake using DInSAR method with different incidence angle SAR data. Arabian Journal of Geosciences, 14, 273. https://doi.org/10.1007/s12517-021-06670-x
Boen, T. (1995). Earthquake Phenomena, a Two-day course on the earthquake-resistant design of buildings.
Copley, A. 2018. The Strength of earthquake generating faults. Journal of the Geological Society, 175, 1-12. https://doi.org/10.1144/jgs2017-037
Crosetto, M. (2002). Calibration and validation of SAR interferometry for DEM generation. ISPRS Journal of Photogrammetry and Remote Sensing, 57(3), 213–227. https://doi.org/10.1016/s0924-2716(02)00107-7
Dong, L., & Luo, Q. (2022). Investigations and new insights on earthquake mechanics from fault slip experiments. Earth-Science Reviews, 228, 104019. https://doi.org/10.1016/j.earscirev.2022.104019
European Space Agency. (n.d.). Level-1 Single Look Complex. User Guides. ESA.
Kurniawan, L., Naryanto, H. S., & Santoso, E. W. (2007). Pasca Gempa Kerinci Tahun 1995 dan Rencana Kontigensi (Contingency Planning). Alami: Jurnal Teknologi Reduksi Risiko Bencana, 2(3), 32-35.
Kusmajaya, S., & Wulandari, R. (2019). Kajian risiko bencana gempabumi di kabupaten cianjur. Jurnal Dialog dan Penanggulangan Bencana, 10(1), 39-51.
Li, P., Ren, F., Cai, M., Guo, Q., & Miao, S. (2019). Present-day stress state and fault stability analysis in the capital area of China constrained by in situ stress measurements and focal mechanism solutions. Journal of Asian Earth Sciences, 185, 104007. https://doi.org/10.1016/j.jseaes.2019.104007
Lutgens, F. K., Tarbuck, E. J., & Tasa, D. (2015). Essentials of geology. Boston, MA, USA: Pearson.
Mabaquiao, L. C. (2021). InSAR-Based LOS Surface Deformation Comparison of Metro Manila Before and after the January 2020 Taal Volcano Eruption. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 46, 201-206. https://doi.org/10.5194/isprs-archives-XLVI-4-W6-2021-201-2021
Markuši?, S., Stanko, D., Korbar, T., Beli?, N., Penava, D., & Kordi?, B. (2020). The Zagreb (Croatia) M5. 5 Earthquake on 22 March 2020. Geosciences, 10(7), 252. https://doi.org/10.3390/geosciences10070252
Mohammadi, A., Karimzadeh, S., Valizadeh Kamran, K., & Matsuoka, M. (2020). Extraction of land information, future landscape changes and seismic hazard assessment: A case study of Tabriz, Iran. Sensors, 20(24), 7010. https://doi.org/10.3390/s20247010
Priya, T., & Pandey, A. C. (2021). Geoinformatics-based assessment of land deformation and damage zonation for Gorkha earthquake, 2015, using SAR interferometry and ANN approach. SN Applied Sciences, 3, 573. https://doi.org/10.1007/s42452-021-04574-9
Putratama, R. (2022). Gempa Cianjur Disebabkan Sesar Cugenang, BMKG Dorong Pemkab Cianjur Relokasi 9 Desa. Retrieved from https://www.bmkg.go.id/berita/?p=gempa-cianjur-disebabkan-sesar-cugenang-bmkg-dorong-pemkab-cianjur-relokasi-9-desa&lang=ID
United Nations. (2015). Global Assessment Report on Disaster Risk Reduction 2016. United Nations Office for Disaster Risk Reduction.
Wright, T. J., Elliott, J. R., Wang, H., & Ryder, I. (2013). Earthquake cycle deformation and the Moho: Implications for the rheology of continental lithosphere. Tectonophysics, 609, 504-523. https://doi.org/10.1016/j.tecto.2013.07.029
Xu, Y., Li, T., Tang, X., Zhang, X., Fan, H., & Wang, Y. (2022). Research on the Applicability of DInSAR, Stacking-InSAR, and SBAS-InSAR for Mining Region Subsidence Detection in the Datong Coalfield. Remote Sensing, 14(14), 3314. https://doi.org/10.3390/rs14143314
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