GPS site velocities in the The International Terrestrial Reference Frame (ITRF-97). Red vectors represent sites in stable plate interiors, used to generate the REVEL (Recent Velocity) plate motion model. White vectors represent sites in deforming plate boundary zones, and are not used in the model, but included for illustration. Note for example the two white vectors in eastern and western Iceland, showing divergence at this mid-ocean spreading center of about 2 cm/yr. Map is in Winkel Tripel projection.
Source: Plate Motion, Geodesy Lab, University of Miami
