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Anatomy of Subsidence in Tianjin from Time Series InSAR

Lookup NU author(s): Professor Zhenhong Li, Dr Andrew Singleton



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Groundwater is a major source of fresh water in Tianjin Municipality, China. The average rate of groundwater extraction in this area for the last 20 years fluctuates between 0.6 and 0.8 billion cubic meters per year. As a result, significant subsidence has been observed in Tianjin. In this study, C-band Envisat (Environmental Satellite) ASAR (Advanced Synthetic Aperture Radar) images and L-band ALOS (Advanced Land Observing Satellite) PALSAR (Phased Array type L-band Synthetic Aperture Radar) data were employed to recover the Earth's surface evolution during the period between 2007 and 2009 using InSAR time series techniques. Similar subsidence patterns can be observed in the overlapping area of the ASAR and PALSAR mean velocity maps with a maximum radar line of sight rate of similar to 70 mm center dot year(-1). The west subsidence is modeled for ground water volume change using Mogi source array. Geological control by major faults on the east subsidence is analyzed. Storage coefficient of the east subsidence is estimated by InSAR displacements and temporal pattern of water level changes. InSAR has proven a useful tool for subsidence monitoring and displacement interpretation associated with underground water usage.

Publication metadata

Author(s): Liu P, Li QQ, Li ZH, Hoey T, Liu GX, Wang CS, Hu ZW, Zhou ZW, Singleton A

Publication type: Article

Publication status: Published

Journal: Remote Sensing

Year: 2016

Volume: 8

Issue: 3

Pages: 266-266

Online publication date: 22/03/2016

Acceptance date: 14/03/2016

Date deposited: 19/05/2016

ISSN (electronic): 2072-4292

Publisher: MDPIAG


DOI: 10.3390/rs8030266


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Funder referenceFunder name
Key Laboratory of Earth Fissures Geological Disaster, Ministry of Land and Resources (Geological Survey of Jiangsu Province)
10665ESA-MOST DRAGON-3 projects
10607ESA-MOST DRAGON-3 projects
41504003NSFC (National Natural Science Foundation of China) Program
201507211219247860Shenzhen Future Industry Development Funding Program
41504004NSFC program
5343ESA-MOST Dragon 2 Cooperation Program
JSGG20121026111056204Shenzhen Scientific Research and Development Funding Program
JCYJ20121019111128765Shenzhen Dedicated Funding of Strategic Emerging Industry Development Program
NE/K010794/1UK Natural Environmental Research Council (NERC) through the LICS project
SGLH20150206152559032Shenzhen-Hong Kong Innovation Circle Program
ZDSY20121019111146499Shenzhen Scientific Research and Development Funding Program