Could a large influx from the photon band cause this.I guess if its particle and not wave that would give it the density needed, if not our magnetosphere is weak. The core could be re shaping, causing a slowdown of conductivity, have read several theories on this. That would also explain plate shifts and the rise in medium sized quakes worldwide,or we are getting ready for magnetic reversal. Bz is south most of the time anymore for no substantial reason, things are more and more askew