Latest GNSS results of the CMONOC network and
- Slides: 12
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) [email protected] ac. cn http: //www. shao. ac. cn/shao_gnss_ac
Content ØBackground & motivation ØGNSS Velocity field ØIonospheric disturbance monitoring ØGNSS coseismic monitoring ØFurther results and analysis ØSummary 2
Background & motivation ØCMONOC (Crustal Movement Observation Network of China) 260 continuous stations 2000 campaign stations 6 SLR + 3 VLBI 100 absolute gravity stations 700 relative gravity stations http: //neiscn. org/ 3
Background & Motivation ØRoutine GNSS data analysis at SHAO SHA strategy in huge network solution (Chen et al. CSNC 2013) 4
Background & Motivation ØGNSS data analysis at SHAO GNSS routine results Troposphere Time series Coord. Time series 5
CMONOC GNSS Velocity field ØDaily solutions combined using QOCA 247 stations with time span > 1 year ITRF 2008 => EURA plate Horizontal Vertical 6
Ionospheric disturbance monitoring Øcalculation VTEC Quartiles ① of the VTEC (Vertical TEC) using precise model; Lushan (Sichuan Province) MSand 7. 0 earthquake onof. April 20, 2013 ② calculation the real-time VTEC quartiles current epoch; Estimated VTEC less than L 2 quartile: disturbance ③ comparison between real-time VTEC and VTEC quartiles to check for ionospheric disturbances. Zhang X H 2013; Xie Yibing et al. 2014 7
GNSS coseismic monitoring Øinstantaneous site velocity solution Xinjiang Ms 6. 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. Zhang and Guo 2013 8
Further results and analysis ØTroposphere Regional modeling and real-time estimation ZTD time series ZTD modeling 9
Further results and analysis ØSite deformation analysis Expansion rate Vertical seasonal signal Strain rate 10
Summary ØRoutine GNSS CMONOC analysis at SHAO ØVelocity field & earthquake monitoring results ØTroposphere modeling and site deformation analysis on going NEXT: ØCMONOC data contributing to BDS data analysis ØRegional RF combining with SLR & VLBI 11
Acknowledgment: NSFC project (No. 11273046) CMONOC Project http: //www. shao. ac. cn/shao_gnss_ac Thank you! 12
