Spatiotemporal evolution analysis of land subsidence in Nanjing based on time-series InSAR

Rongsheng Chen; Juntao Zhu

doi:10.1117/12.3059005

2 January 2025 Spatiotemporal evolution analysis of land subsidence in Nanjing based on time-series InSAR

Rongsheng Chen, Juntao Zhu

Author Affiliations +

Proceedings Volume 13514, International Conference on Remote Sensing and Digital Earth (RSDE 2024); 1351408 (2025) https://doi.org/10.1117/12.3059005
Event: 2024 International Conference on Remote Sensing and Digital Earth, 2024, Chengdu, China

Abstract

In view of the serious land subsidence in Nanjing, this paper uses 33 Sentinel-1A orbit lifting data from January 2021 to. April 2023 based on PS-InSAR and SBAS-InSAR technologies to monitor the subsidence in the main urban area of Nanjing. The monitoring results showed that the uneven settlement in Nanjing was obvious during the study period, with the settlement rate ranging from -50. 5 mm/a to 26 mm/a, and the cumulative settlement between -262. 2 mm and 88. 6 mm, and the most serious settlement areas were located in Moling Street, Jiangning District, Dingshan Street, Pukou District, and Honghua Street, Qinhuai District. Research results indicate that there is a certain spatial correlation between the process of urbanization, ground fissures and faults, and ground subsidence.

(2025) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Rongsheng Chen and Juntao Zhu "Spatiotemporal evolution analysis of land subsidence in Nanjing based on time-series InSAR", Proc. SPIE 13514, International Conference on Remote Sensing and Digital Earth (RSDE 2024), 1351408 (2 January 2025); https://doi.org/10.1117/12.3059005

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KEYWORDS

Deformation

Interferometric synthetic aperture radar

Interferometry

Synthetic aperture radar

Analytical research

Engineering

Linear filtering

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