Statistical analysis Since the network contains both continuous sites and campaign sites, we include statistical process noise in the velocity analyses to account for temporal correlations in the time series Each site has random walk process noise(2 mm)2ly Without process noise, velocities of continuous sites would have sigmas of < 0. 1 mm/yr; with process noise sigmas are between 0.6 and 1.0 mm/yr e.g Random Walk(mmlyr) White noise(mm/yr) E U E POL205±0630±0.605±11020.13301-1102 SELE09±0.83.7±0.8-25±121.7±0.138±0.1-21±02 05/1203 12540Lec23 Frame Realization Realization of eurasian frame two methods used ITRF2000: Used global distribution of sites(52) on many plates to rotate/translate frame onto ITRF2000. ITRF2000 Eurasia pole used to rotate to Eurasia fixed frame Fit to ITRF2000 (52-sites Horizontal RMS 0.8 mmlyr; vx2/f 1 Vertical RMS 1.8 mm/yr; vx2/f 2.4 Eurasia only: Used 14 sites on stable Eurasia to define frame Fit to Eurasian sites only (14-sites) Horizontal RMS 0.5 mmlyr; vx2/0.8 Vertical RMS 1.8 mmlyr; v22/f2.3 Notice x2 is <1 for Eurasia but >1 for global; sigmas depend on size of region consideredStatistical analysis • Since the network contains both continuous sites and campaign sites, we include statistical process noise in the velocity analyses to account for temporal correlations in the time series. • Each site has random walk process noise (2 mm)2/yr • Without process noise, velocities of continuous sites would have sigmas of < 0.1 mm/yr; with process noise sigmas are between 0.6 and 1.0 mm/yr e.g. Site Random Walk (mm/yr) White noise (mm/yr) E N UENU POL2 0.5±0.6 3.0±0.6 -0.5±1.1 0.2±0.1 3.3±0.1 -1.1±0.2 SELE 0.9±0.8 3.7±0.8 -2.5±1.2 1.7±0.1 3.8±.0.1 -2.1±0.2 05/12/03 12.540 Lec 23 11 05/12/03 12.540 Lec 23 12 Frame Realization • Realization of Eurasian frame; Two methods used on many plates to rotate/translate frame onto ITRF2000. ITRF2000 Eurasia pole used to rotate to Eurasia fixed frame • Fit to ITRF2000 (52-sites): • Horizontal RMS 0.8 mm/yr; √c2/f 1.2 • Vertical RMS 1.8 mm/yr; √c2/f 2.4 • Fit to Eurasian sites only(14-sites) • Horizontal RMS 0.5 mm/yr; √c2/f 0.8 • Vertical RMS 1.8 mm/yr; √c2/f 2.3 • Notice c2 depend on size of region considered. – ITRF2000: Used global distribution of sites(52) – Eurasia only: Used 14 sites on stable Eurasia to define frame is <1 for Eurasia but >1 for global; sigmas 6