Sub Deduction Zone News Today

>> gregg: i grew up in southern california, los angeles, and experienced a great many earthquakes and later in san francisco where i lived. there were two different kinds. there was the volt and then the sustained earthquake. do those respectively create different kinds and levels of tsunamis in duration? >> the bigger difference here if this happens in like a sub deduction zone and if it happens over water. you are talking about a mega thrust earthquake in a zone like this, you have two plates....