It was a week ago that the huge earthquake struck Japan. 

By coincidence, 40 or 50 seismologists were gathered on the outskirts of Tokyo. They were discussing marine issues related to the Sumatra earthquake of 2004.  

Among them was marine geologist Chris Goldfinger of Oregon State University. 

OPB’s Beth Hyams asked him what he thought when it struck. Click “play,” above, to listen to the conversation.