1. 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) junping@shao.ac.cn http://www.shao.ac.cn/shao_gnss_ac

2. 22 Content  Background & motivation  GNSS Velocity field  Ionospheric disturbance monitoring  GNSS coseismic monitoring  Further results and analysis  Summary

3. 33 Background & motivation http://neiscn.org/  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

4. 44 Background & Motivation  Routine GNSS data analysis at SHAO SHA strategy in huge network solution (Chen et al. CSNC2013)

5. 55 Background & Motivation  GNSS data analysis at SHAO GNSS routine results Troposphere Time series Coord. Time series

6. 66 CMONOC GNSS Velocity field  Daily solutions combined using QOCA 247 stations with time span > 1 year ITRF 2008 => EURA plate Horizontal Vertical

7. 77 Ionospheric disturbance monitoring  VTEC Quartiles Zhang X H 2013; Xie Yibing et al. 2014 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.

8. 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.

9. 99 Further results and analysis  Troposphere Regional modeling and real-time estimation ZTD time series ZTD modeling

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

11. 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. 12 Thank you! Acknowledgment: NSFC project (No. 11273046) CMONOC Project http://www.shao.ac.cn/shao_gnss_ac