moment release is observed before the onset of the fissure eruption (red bar), i.e. while the dyke was growing, and the moment release in the dyke is now 10,000 times less than it was before the eruption (logaritmic scale on
y-axis).
For the caldera (lower panels), things are a bit more complicated, although a clear trend of decreasing activity is found there as well. Most moment is released during
/earthquakes-and-volcanism/articles/nr/3055