Hi John. Here is another example of changes occurring in the earth before a major quake. The question that has to be asked is does this occur before every quake? I would have to say no, because the area of Parkfield was being monitored for just such signals. None were seen.

I suspect the earth does give out signals before a major quake is about to occur, but these changes can be so subtle that we never seen them, or in some cases we ignore them. Take Care…Don in creepy town

“Months before last January's devastating earthquake, the ground beneath Kobe, Japan, started showing signs of an impending crisis. Subsurface water displayed chemical changes that intensified in the days before the disaster, two teams of Japanese scientists report in the July 7 Science.”

http://www.findarticles.com/p/articles/mi_m1200/is_n3_v148/ai_17294364

• Kobe Quake