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

Xiangtong Liu; Qiuxiang Cao; Zhuguo Xiong; Haitao Yin; Genru Xiao

doi:10.1117/1.JRS.10.026014

4 May 2016 Application of small baseline subsets D-InSAR technique to estimate time series land deformation of Jinan area, China

Xiangtong Liu, Qiuxiang Cao, Zhuguo Xiong, Haitao Yin, Genru Xiao

Author Affiliations +

Funded by: National Natural Science Foundation of China, State Key Laboratory Breeding Base of Nuclear Resources Environment

Journal of Applied Remote Sensing, Vol. 10, Issue 2, 026014 (May 2016). https://doi.org/10.1117/1.JRS.10.026014

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.

Citation Download 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," Journal of Applied Remote Sensing 10(2), 026014 (4 May 2016). https://doi.org/10.1117/1.JRS.10.026014

Published: 4 May 2016

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