Look forward to the explanation. Does this have something to do with the mining? Beginnings of a magma intrusion and new volcano? Something more Sci Fi....perhaps worms seeking spice in the basin, or the mining has disturbed the old ones who are arising from their long slumber....
These are shallow quakes, volcanic activity would have deeper activity along with distinguishable harmonics.
I think you may be lurkin in the wrong Dune area. ;-) The article says there is no way to predict where the next big one will hit. However, there is some predictability as to when the next big one will hit. In my studies of volcanic and EQ activity, I have noted that big ones often hit a few days after either a new moon or a full moon. This year, with the moon the closest it has been in 18 years, The Japan big quake hit a few days after the new moon (when both sun and moon are pulling hard in the same direction). The second big one occurred almost exactly 28 days later when the new moon had also been a few days earlier. So I will go out on a limb and suggest that another big something will occur shortly after the next new moon, or perhaps shortly after the next full moon. We will know soon enough. Now, if I could just guess where.