Monitoring the spatial-temporal characteristics of land subsidence in Lianyungang City due to reclamation with multi-temporal InSAR technique

Junhao Zhou; Yonghong Zhang; Hongan Wu; Shengyang Cai

doi:10.1117/12.3029276

16 May 2024 Monitoring the spatial-temporal characteristics of land subsidence in Lianyungang City due to reclamation with multi-temporal InSAR technique

Junhao Zhou, Yonghong Zhang, Hongan Wu, Shengyang Cai

Author Affiliations +

Proceedings Volume 13166, International Conference on Remote Sensing Technology and Survey Mapping (RSTSM 2024); 131660M (2024) https://doi.org/10.1117/12.3029276
Event: International Conference on Remote Sensing Technology and Survey Mapping (RSTSM 2024), 2024, Changchun, China

Abstract

Marine reclamation took place at large scale in Lianyungang city of Jiangsu province, China during last two decades in order to provide extra land for economy growth. However, large land subsidence usually occurs on newly reclaimed land, which may bring damages to buildings and infrastructures constructed over the reclaimed land and seriously hinder the regional development in turn. Therefore, knowing detailed information about land subsidence over the reclaimed land is of great significance. As a new remote sensing monitoring method, synthetic aperture radar interferometry technology has great advantages in ground subsidence monitoring. Therefore, in this paper, the Sentinel-1A SAR images acquired from 2016 to 2021 are processed using InSAR time series technology to monitor and analyze the spatio-temporal characteristics of ground subsidence in the region. The results show that by the end of 2021, large subsidence occurred over the reclamation area of Lianyungang which is mainly caused by soil consolidation. The maximum subsidence rate is -165 mm/year, and the maximum cumulative subsidence reaches -991 mm during the 6 years, which is located in the northeast of Lianyungang. The deformation monitoring of the region has certain theoretical references for disaster prevention and control.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Junhao Zhou, Yonghong Zhang, Hongan Wu, and Shengyang Cai "Monitoring the spatial-temporal characteristics of land subsidence in Lianyungang City due to reclamation with multi-temporal InSAR technique", Proc. SPIE 13166, International Conference on Remote Sensing Technology and Survey Mapping (RSTSM 2024), 131660M (16 May 2024); https://doi.org/10.1117/12.3029276

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KEYWORDS

Interferometric synthetic aperture radar

Synthetic aperture radar

Deformation

Ocean optics

Analytical research

Buildings

Environmental monitoring

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