Monitoring of Land Subsidence using PSInSAR: A Case Study in Nanjing Urban Area

Miao Hou, Yongping Xu, Huaiqian Xiao, Houjun Yan, Xing Yang, Songgan Weng

2021

Abstract

Urban land subsidence is mainly induced by human activities, such as ground-water overdraft, mining of mineral resources and load of constructions. The geodetic-based monitoring systems utilizing leveling have been used to study land subsidence in many urban subsidence regions for a long time. But many benchmarks established for leveling have been destroyed or are unstable due to human activities or land subsidence. In addition, conventional leveling in urban areas is costly and time-consuming, often taking months or years to complete land subsidence measurement. So, it is of great significance to adopt new measurement technology in urban land subsidence monitoring. Nanjing city with rapid urbanization, a large city in China, has suffered subsidence problems in the past 30 years. This paper uses the Permanent Scatterers Synthetic Aperture Radar Interferometry (PSInSAR) methodology with Synthetic Aperture Radar (SAR) images acquired from the Sentinel-1 between 2014 and 2019 to characterize the subsidence of Nanjing city, which provides high-resolution assessment of deformations for sluices, bridges, high-rise buildings, historical buildings and so on. The analysis shows that PSInSAR is very efficient space-borne technique for monitoring subsidence phenomena in urban area.

Paper Citation

in Harvard Style

Hou M., Xu Y., Xiao H., Yan H., Yang X. and Weng S. (2021). Monitoring of Land Subsidence using PSInSAR: A Case Study in Nanjing Urban Area. In Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE, ISBN 978-989-758-560-9, pages 268-274

in Bibtex Style

@conference{wre21,
author={Miao Hou and Yongping Xu and Huaiqian Xiao and Houjun Yan and Xing Yang and Songgan Weng},
title={Monitoring of Land Subsidence using PSInSAR: A Case Study in Nanjing Urban Area},
booktitle={Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,},
year={2021},
pages={268-274},
publisher={SciTePress},
organization={INSTICC},
doi={},
isbn={978-989-758-560-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,
TI - Monitoring of Land Subsidence using PSInSAR: A Case Study in Nanjing Urban Area
SN - 978-989-758-560-9
AU - Hou M.
AU - Xu Y.
AU - Xiao H.
AU - Yan H.
AU - Yang X.
AU - Weng S.
PY - 2021
SP - 268
EP - 274
DO -