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VIGNY ET AL.: ARABIA PLATE MOTION
Figure 2. Large scale velocities in the ITRF2000 reference frame, relative to Eurasia as defined by Calais et al.
(2003). Ellipses show the 99% confidence level of the a-priori formal uncertainties given in table 2. Numbers next
to arrow heads indicate the station velocity in mm/yr.
Somalia
The motion of Somalia is constrained by even less
data than Africa: only two sites (MALI and SEY1)
were used by Sella et al. [2002], making the
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determination of the pole unambiguous, but not well
constrained. Fernandes et al. [2003] used four sites
(MALI, SEY1, REUN and RBAY). We did not use
RBAY in our computations because no data was
available during the various campaigns, but we added
three sites of the Djibouti regional network which are