Components of the average 1994–2000 velocity field calculated from the best-fitting model. (a) Field v_ps, (b) v_shear, (c) field v_rot, (d) v_compr, (e) v_creep. Each velocity field is calculated at the 102 GPS sites as well as 20 points on the plate boundary. Each of the Pacific and SNGV plate boundaries are sampled at 10 uniformly spaced locations.