I apologize if this has been pointed out before... 
But I just came across the seismology web pages of
Doctor Steve Dutch from the University of Wisconsin-Green Bay.

Being only an amateur, I find Doctor Dutch's descriptions and animations 
quite extraordinary in helping
me understand many of the principals I see discussed in this form... and 
also to help me explain to others
the mechanics of seismology and seismometers.

Check it out for yourselves....   
http://www.uwgb.edu/DutchS/EarthSC202Notes/quakes.htm

Jan in Gilroy



    




  


I apologize if this has been pointed
out before...  

But I just came across the seismology web pages of

Doctor Steve Dutch from the University of Wisconsin-Green Bay.



Being only an amateur, I find Doctor Dutch's descriptions and
animations quite extraordinary in helping

me understand many of the principals I see discussed in this form...
and also to help me explain to others

the mechanics of seismology and seismometers.



Check it out for yourselves....  
http://www.uwgb.edu/DutchS/EarthSC202Notes/quakes.htm



Jan in Gilroy