[1]ZHAO Qiang,SU Qin.Deformation Detection and Analysis of the Mianning Cross-fault Site,from InSAR Technology[J].Journal of Seismological Research,2018,41(03):361-367.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 03
Page number:
361-367
Column:
Public date:
2018-08-20
- Title:
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Deformation Detection and Analysis of the Mianning Cross-fault Site,from InSAR Technology
- Author(s):
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ZHAO Qiang1; SU Qin2
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(1.The Second Monitoring and Application Center,China Earthquake Administration,Xi'an 710054,Shaanxi,China)(2.Survey Engineering department,Sichuan Earthquake Agency,Ya'an 625000,Sichuan,China)
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- Keywords:
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mianning; cross-fault site; InSAR; land subsidence
- CLC:
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P315.725
- DOI:
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- Abstract:
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The section 1-1C of the Mianning cross-fault site began to undergo a sharp drop in June 2016.It is a significant anomaly that occurred in the Sichuan region since the Wenchuan M8.0 earthquake.In response to the anomaly,this paper uses Sentinel-1 image data to monitor the subsidence of the cross-fault site in Mianning with the SBAS technology.The spatial extent and amplitude of the topographic variations and the time series curves of the deformation in the Mianning cross-fault field are obtained.InSAR deformation field results show that,first,from the perspective of space,the deformation center is located near the well of Xikang Hot Spring.Second,from the time series curve of deformation,it shows that the subsidence time coincides with the Xikang hot spring well activity.Therefore,we believe that the deformation should be caused by the pumping of the Xikang Hot Spring well.