Local geology can play a pretty big role in observed velocities, but I agree these are pretty quick. The velocity changes in the figures are really interesting,

Local geology can play a pretty big role in observed velocities, but I agree these are pretty quick. The velocity changes in the figures are really interesting, and I agree much faster than plate motions. I'd wager that there is some kind of slow or aseismic slip happening. Slow slip events There are notes on the displacement time series though they are in french. http://volcano.iterre.fr/mayotte-seismo-volcanic-crisis http://volcano.iterre.fr/mayotte-seismo-volcanic-crisis