[bubbacluck]

what is the difference between and earthquake and “relieving pressure”?

A small one like this (3.6) is like an SBD "fart". It relieves the pressure. The big ones, like an 8.0 or thereabout, are more like a ... well, do you get the picture? They're both earthquakes but one is constructive and the other is destructive.

[doc1019]

Thanks for the into, I will research further. I’m an information freak and need to know more.