Latest GNSS results of the CMONOC network and its application in earthquake monitoring Junping Chen, Yize Zhang, Yibing Xie, Weijie Tan, Sainan Yang, Bin.

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Presentation transcript:

Latest GNSS results of the CMONOC network and its application in earthquake monitoring Junping Chen, Yize Zhang, Yibing Xie, Weijie Tan, Sainan Yang, Bin Wu Shanghai Astronomical Observatory (SHAO)

22 Content  Background & motivation  GNSS Velocity field  Ionospheric disturbance monitoring  GNSS coseismic monitoring  Further results and analysis  Summary

33 Background & motivation  CMONOC (Crustal Movement Observation Network of China) 260 continuous stations 2000 campaign stations 6 SLR + 3 VLBI 100 absolute gravity stations 700 relative gravity stations

44 Background & Motivation  Routine GNSS data analysis at SHAO SHA strategy in huge network solution (Chen et al. CSNC2013)

55 Background & Motivation  GNSS data analysis at SHAO GNSS routine results Troposphere Time series Coord. Time series

66 CMONOC GNSS Velocity field  Daily solutions combined using QOCA 247 stations with time span > 1 year ITRF 2008 => EURA plate Horizontal Vertical

77 Ionospheric disturbance monitoring  VTEC Quartiles Zhang X H 2013; Xie Yibing et al Lushan (Sichuan Province) M S 7.0 earthquake on April 20,2013 Estimated VTEC less than L2 quartile: disturbance ① calculation of the VTEC (Vertical TEC) using precise model; ② calculation the real-time VTEC and VTEC quartiles of current epoch; ③ comparison between real-time VTEC and VTEC quartiles to check for ionospheric disturbances.

88 GNSS coseismic monitoring  instantaneous site velocity solution Zhang and Guo 2013 Xinjiang Ms6.6 earthquake on June 30,2012 ① retrieval of real-time high rate streams; ② calculation of the Doppler observations; ③ estimation of station instantaneous velocity; ④ check for coseismic deformation.

99 Further results and analysis  Troposphere Regional modeling and real-time estimation ZTD time series ZTD modeling

10 Further results and analysis  Site deformation analysis Vertical seasonal signal Expansion rate Strain rate

11 Summary  Routine GNSS CMONOC analysis at SHAO  Velocity field & earthquake monitoring results  Troposphere modeling and site deformation analysis on going NEXT:  CMONOC data contributing to BDS data analysis  Regional RF combining with SLR & VLBI

12 Thank you! Acknowledgment: NSFC project (No ) CMONOC Project