Defining Reference Frames in GAMIT/GLOBK

• Examples of the use of the reference frame to visualize tectonic motions

• Two approaches to reference frame definition in GLOBK

• Spatial filtering of time series

Western Turkey & Aegean (wrt. Eurasia)

Western Turkey and the Aegean (wrt. Anatolia)

Frame definition through stabilization

In glorg command file:

apr_file itrf00_eura.apr

stab_site kosg brus toul wtz1 pots yakt

stab_site nyal zwen bor1 mets irkt

Frame definition by plate estimation

In glorg command file:

apr_file itrf00.apr

stab_site clear algo yell pie1 kosg brus toul

stab_site wtz1 pots yakt tskb yar1 ….(all good IGS)

plate WEUR kosg brus toul wtz1 pots

plate WEUR hers zwen bor1 mets joze

plate MACE m108 m112 m120 m123 m124

x noplate tran

Then run sh_org2vel to get velocities with respect to each plate