An Explanation of Earthquakes...

 

 

Californians have to keep up with earthquake science living here! Relate!!

 

Recently, Christchurch , and then Japan , had terrible earth-quakes with lots of after shocks. They were caused by Tectonic plates moving under unbelievable pressure.
Some were thought to be Oscillatory, while others were believed to be Trepidatory. It occurred to me that most people might be confused about this, so I thought it wise to let everyone know the difference.
 What's the difference between an Oscillatory and a Trepidatory earthquake?

1. Now this calculation is just for engineers. If you are competent in this field this should explain:

2. However: This one is for the layman, and having access to your emailed offerings in the past, you should get the picture straight away.

 
This is a trepidatory earthquake -- an up and down movement.....


 This is an oscillatory earthquake -- a side to side movement...

And this is a combination of both trepidatory and oscillatory:



 
Now honestly. Isn't science beautiful when properly explained? What are friends for?