Originally Posted By: Arney

I wonder how much infrastructure has been weakened by the original quake and is now more vulnerable to these major aftershocks? It's possible that a major aftershock or two could cause more damage to Tokyo than the original quake. I shudder to think what it would do to the nuke plants that are already struggling due to damage

The good news is that the earthquake, in and of itself, didn't do much harm to the nuke plants. It was the tsunami that took out the diesel backup generators and caused the big problems. It also has to be noted that the difference between a seven and an eight is a factor of ten. This quake was approximately one hundred times as powerful as the big one in Haiti.