Remote Sensing Applications and Decision Support

Application of small baseline subsets D-InSAR technique to estimate time series land deformation of Jinan area, China

[+] Author Affiliations
Xiangtong Liu

Central South University, School of Geoscience and Info-Physics, No. 932, South Lushan Road, Yuelu District, Changsha 410083, China

East China University of Technology, Faculty of Geomatics, No. 418, Guanglan Road, JingKai District, Nanchang 330013, China

Qiuxiang Cao, Zhuguo Xiong, Genru Xiao

East China University of Technology, Faculty of Geomatics, No. 418, Guanglan Road, JingKai District, Nanchang 330013, China

Haitao Yin

Seismological Bureau of Shandong Province, No. 20, Lixia Road, LiXia District Jinan 250014, China

J. Appl. Remote Sens. 10(2), 026014 (May 04, 2016). doi:10.1117/1.JRS.10.026014
History: Received October 27, 2015; Accepted April 7, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Xiangtong Liu ; Qiuxiang Cao ; Zhuguo Xiong ; Haitao Yin and Genru Xiao
"Application of small baseline subsets D-InSAR technique to estimate time series land deformation of Jinan area, China", J. Appl. Remote Sens. 10(2), 026014 (May 04, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.026014


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