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Journal of Applied Remote Sensing

Application of small baseline subsets D-InSAR technique to estimate time series land deformation of Jinan area, China
Author(s): Xiangtong Liu; Qiuxiang Cao; Zhuguo Xiong; Haitao Yin; Genru Xiao
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Paper Abstract

Jinan, located in the South of the North China Plain, is an area where underground water has been exploited excessively. However, land deformation surveys only focus on the small district obtained by GPS and Leveling. Here, we use interferometric synthetic aperture radar (InSAR) time-series of ASAR data to resolve land subsidence in the entire Jinan region. In our research, we get 20 interferograms with a temporal threshold of 700 days and spatial-baseline threshold of 300 m from 14 ASAR satellite images on a descending orbit, and then get the surface displacement using Small Baseline InSAR (SBAS D-InSAR) retrained with a periodic model. Meanwhile, the accuracy of our work is proved by the results of GPS measurements. Finally, several settlement funnels are observed with extreme values of −20  cm, and their generation is related to massive groundwater extraction.

Paper Details

Date Published: 4 May 2016
PDF: 13 pages
J. Appl. Rem. Sens. 10(2) 026014 doi: 10.1117/1.JRS.10.026014
Published in: Journal of Applied Remote Sensing Volume 10, Issue 2
Show Author Affiliations
Xiangtong Liu, Central South Univ. (China)
East China Institute of Technology (China)
Qiuxiang Cao, East China Institute of Technology (China)
Zhuguo Xiong, East China Institute of Technology (China)
Haitao Yin, Seismological Bureau of Shandong Province (China)
Genru Xiao, East China Institute of Technology (China)

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