Paper Info
Title
Imaging Land Subsidence Induced by Groundwater Extraction in Beijing (China) Using Satellite Radar Interferometry.
Abstract
Beijing is one of the most water-stressed cities in the world. Due to over-exploitation of groundwater, the Beijing region has been suffering from land subsidence since 1935. In this study, the Small Baseline InSAR technique has been employed to process Envisat ASAR images acquired between 2003 and 2010 and TerraSAR-X stripmap images collected from 2010 to 2011 to investigate land subsidence in the Beijing region. The maximum subsidence is seen in the eastern part of Beijing with a rate greater than 100 mm/year. Comparisons between InSAR and GPS derived subsidence rates show an RMS difference of 2.94 mm/year with a mean of 2.41 +/- 1.84 mm/year. In addition, a high correlation was observed between InSAR subsidence rate maps derived from two different datasets (i.e., Envisat and TerraSAR-X). These demonstrate once again that InSAR is a powerful tool for monitoring land subsidence. InSAR derived subsidence rate maps have allowed for a comprehensive spatio-temporal analysis to identify the main triggering factors of land subsidence. Some interesting relationships in terms of land subsidence were found with groundwater level, active faults, accumulated soft soil thickness and different aquifer types. Furthermore, a relationship with the distances to pumping wells was also recognized in this work.
Year
DOI
Venue
2016
10.3390/rs8060468
REMOTE SENSING
Keywords
Field
DocType
radar,InSAR,Beijing,land subsidence,triggering factors,conditioning factors
Radar,Satellite,Interferometric synthetic aperture radar,Groundwater,Remote sensing,Subsidence,Active fault,Aquifer,Geology,Beijing
Journal
Volume
Issue
ISSN
8
6
2072-4292
Citations 
PageRank 
References 
0
0.34
0
Authors
10
Name
Order
Citations
PageRank
Mi Chen110.77
Roberto Tomas2215.48
Zhenhong Li316547.51
Mahdi Motagh45612.06
Tao Li500.34
Leyin Hu600.34
Huili Gong78829.37
Xiaojuan Li8122.38
Yu Jun92613.33
Xulong Gong1000.68