Analyzing of land subsidence by Sentinel-1 time-series images using PSInSAR method: A case study of Thai Nguyen, Vietnam
1 Le Quy Don Technical University, Hanoi, Vietnam
2 Hanoi University of Mining and Geology, Hanoi, Vietnam
- Received: 10th-Apr-2022
- Revised: 29th-July-2022
- Accepted: 19th-Aug-2022
- Online: 31st-Dec-2022
Natural disasters and human activities are now causing an increase in land subsidence, or surface displacement. The effects of land subsidence cause landslides and construction cracking. PSInSAR (Persistent Scatter Interferometry) was identified to estimate surface displacement from a time series of Synthetic Aperture Radar (SAR) images. This technique is a subset of the DInSAR (Differential Interferometric Synthetic Aperture Radar) method. In this article, the authors determined and analyzed land subsidence in Thai Nguyen Province, Vietnam, using time series Sentinel-1A data with VV polarization from July 2019 to December 2020 and the PSInSAR method. There are numerous mineral exploitation mines in Thai Nguyen Province. It is one of the causes of an unusual amount of land subsidence in the region. According to the results determined by the InSAR technique, the velocity of displacement along the line of sight (LOS) of the study area ranges from -23.2 mm per year to +21.0 mm per year. The analysis of time-series SAR images reveals anomalous land subsidence at persistent scatter (PS) points. By analyzing the time-series displacement at PS points using the StaMPS Visualizer tool, the land subsidence during the image acquisition period and surface displacement trends over time were determined. According to this, coal mining regions have the highest land subsidence values ranging from -40 mm to -60 mm. The city and mine regions of Thai Nguyen, where operations have stopped, are largely stable. In addition, the time-series analysis at PS points will allow us to identify unusual displacement points, enabling the implementation of early warning plans.
Balbarani, S., Euillades, P. A., Euillades, L. D.,Casu, F., and Riveros, N. C. (2013). Atmospheric corrections in interferometric synthetic aperture radar surface deformation—A case study of the city of Mendoza, Argentina. Adv. Geosci., 35, 105–113.
Bateson, L., Cigna, F., Boon, D., and Sowter, A. (2015). The application of the Intermittent SBAS (ISBAS) InSAR method to the South Wales Coalfield, UK. International Journal of Applied Earth Observation and Geoinformation, 34, 249-257.
Binh, T. (2020). Coal mining companies must be punished for harming people's lives. Nhan dan Journal. https://nhandan.vn/can-xu-nghiem-cong-ty-khai-thac-than-gay-anh-huong-doi-song-nguoi-dan-post625351.html.
Binh, T. (2021). Early to support people affected by subsidence in Trai Cau town. Nhan Dan Journal. https://nhandan.vn/tin-tuc-xa-hoi/som-ho-tro-nguoi-dan-bi-anh-huong-sut-lun-o-thi-tran-trai-cau-667077/
Chen, G., Zhang, Y., Zeng, R., Yang, Z., Chen, X., Zhao, F., and Meng, X. (2018b). Detection of Land Subsidence Associated with Land Creation and Rapid Urbanization in the Chinese Loess Plateau Using Time Series InSAR: A Case Study of Lanzhou New District. Remote Sensing, 10(2), 270.
Dan, T. (2018). Thai Nguyen: Announced the cause of land subsidence. Natural Resources and Environment Journal. https://baotainguyenmoitruong.vn/thai-nguyen-cong-bo-nguyen-nhan-sut-lun-dat-nguoi-mung-ke-lo-268324.html
Dang, V. K., Doubre, C., Weber, C., Gourmelen, N., and Masson, F. (2014). Recent land subsidence caused by the rapid urban development in the Hanoi region (Vietnam) using ALOS InSAR data. Natural Hazards and Earth System Sciences, 14, 657-674.
Deng, J., Li, T., and Feng, D. (2019). Urban Ground Surface Subsidence Monitoring Based on Time Series InSAR Technology. IOP Conference Series: Earth and Environmental Science, 283, 13-14, Nanchang, China, 1-6.
Emardson, T. R., Simons, M., and Webb, F. H. (2003). Neutral atmospheric delay in interferometric synthetic aperture radar applications: Statistical description and mitigation. Journal of Geophysical Research: Solid Earth, 108 (B5), 1-8.
Ferretti, A., Andrea, M-G., Prati, C., Rocca, F., and Massonnet, D. (2007). InSAR Principles: Guidelines for SAR Interferometry Processing and Interpretation. ESA Publications, The Netherlands, 250 pages.
Giang, T. (2020). New sinkhole appeared in Trai Cau town. Web portal Dong Hy district, Thai Nguyen province. https://donghy.thainguyen.gov.vn/tin-moi/-/asset_publisher/Pd5HkZs9ZQIG/content/xuat-hien-ho-sut-moi-tai-thi-tran-trai-cau?inheritRedirect=false.
Nam, B. X., Tran, V. A., Bui, L. K., Long, N. Q., Le, T. T. H., and Goyal, R. (2021). Mining-Induced Land Subsidence Detection by Persistent Scatterer InSAR and Sentinel-1: Application to Phugiao Quarries, Vietnam. Proceedings of the International Conference on Innovations for Sustainable and Responsible Mining, Springer, 108, 18-38.
Pepe, A., and Calo, F. (2017). A Review of Interferometric Synthetic Aperture RADAR (InSAR) Multi-Track Approaches for the Retrieval of Earth’s Surface Displacements. Applied Sciences, 7(12), 1264, 1-39.
Sandwell, D. T., Myer, D., Mellors, R., Shimada, M., Brooks, B., and Foster, J. (2008). Accuracy and Resolution of ALOS Interferometry: Vector DeformationMaps of the Father’s Day Intrusion at Kilauea. IEEE Transactions on Geoscience and Remote sensing, 46(11), 3524-3534.
Tran, V. A., Tran, Q. C., Nguyen, D. A., Ho, T. M. D., Tran, T. A., Nguyen, N. H., and Luong, T. T. L. (2016). Application of PSInSAR method for determining of land subsidence in Hanoi city by Cosmo-Skymed imagery. GIS-IDEAS 2016, 1-9.
Tran, V. A., Bui, X. N., Nguyen, Q. L., and Tran, T. A. (2020). Land Subsidence Detection in Tan My-Thuong Tan Open Pit Mine and Surrounding Areas by Time Series of Sentinel-1 Images. Inżynieria Mineralna, 1(2). 171-180. https://doi.org/10.29227/IM-2020-02-22
Tran, V. A., Tran, Q. C., Nguyen, D. A., Ho, T. M. D, Hoang, A. T., Ha, T. K., and Bui, D. T. (2021a). Subsidence Assessment of Building Blocks in Hanoi Urban Area from 2011 to 2014 Using TerraSAR-X and COSMO-SkyMed Images and PSInSAR, Remote Sensing and GIScience, Springer, Switzerland, 127-150.
Tran, V. A., Truong, X. Q., Nguyen, D. A., Longoni, L., and Yordanov, V. (2021b). Landslides Monitoring with Time Series of SENTINEL-1 Imagery in Yen Bai Province-Vietnam. International Society for Photogrammetry and Remote sensing, 46(4,) 197-203
Trang, Q. (2020). Thai Nguyen: Unusual landslide occurred at the landfill of Phan Me Coal Mine. Vietnam News Agency Journal. https://vnanet.vn/vi/tin-anh/tin-thoi-su-trong-nuoc-1/thai-nguyen-xuat-hien-sat-truot-bat-thuong-tai-bai-do-thai-mo-than-phan-me-4548107.html?img=4547728.
Zhang, Y., Liu, Y., Jin, M., Jing, Y., Liu, Y., Liu, Y., Sun, W., Wei, J., and Chen, Y. (2019). Monitoring Land Subsidence in Wuhan City (China) using the SBAS-InSAR Method with Radarsat-2 Imagery Data. Sensors, 19(3), 743, 1-16.