Hi Gerry. It’s my understanding that the lower the “b value” the greater the probability there is to have a large quake. This “b value” is based on movement, or in this case the lack of movement. From what I understand it works this way. Correct me if I’m wrong.

The independent background seismicity rate is ~ stable.

Prior to a large earthquake we sometimes observe a significant decrease in the rate of small earthquakes in a restricted segment of the seismic zone.

Quiescence and the subsequent mainshock must be correlated in space and time in order to be considered a precursor. They may be separated by a period of increased activity (foreshocks).

I have been trying to use the “b value” but so far I don’t seem to be able to grasp the idea so as to have it work for me.

I can see areas that are quiet, but can’t get the “b value” for that quiet zone. To be perfectly truthful I really don’t think I fully understand it. Change that to I know I don’t fully understand it. Take Care…Don in creepy town.