测绘通报 ›› 2017, Vol. 0 ›› Issue (7): 89-93.doi: 10.13474/j.cnki.11-2246.2017.0230

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Land Subsidence Monitoring and Analyzing of Cangzhou Area Sentinel-1A/B Based Time Series InSAR

ZHOU Hongyue1,2, WANG Yunjia1,2, YAN Shiyong1,2, WU Yue1,2, LIU Xixi1,2   

  1. 1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China;
    2. National Administration of Surveying Mapping and Geoinformation(NASMG) Key Laboratory of Land Environmentand Disaster Monitoring, Xuzhou 221116, China
  • Received:2017-01-23 Online:2017-07-25 Published:2017-08-07

Abstract: The surface average subsidence rate and oumulative subsidence of Cangzhou area from November 2015 to November 2016 were obtained with 22 scences of Sentinel-1A/B SAR imagery respective by PS-InSAR and SBAS-InSAR techniques. The annual and accumulative subsidences from both time-series analysis methods had a high coherence with each other. The monitoring results indicated that the ground surface of Xian County,Cang County,Cangzhou urban area had a rebound trend; Qing County,the east of Cang County,the west of Nanpi County and Dongguang County experienced obvious subsidence, especially the accumulating subsidence in Hezhuang village of Dongguang County reached 47 mm.The main reason leading to these obvious subsidences was the over-exploitation of ground-water for agriculture.Moreover, it discussed the application of Sentinel-1A/B SAR images in monitoring urban subsidence and the results would provide important references for the relevant departments.

Key words: Sentinel-1, InSAR, Cangzhou area, urban land subsidence

CLC Number: