Detailed text transcripts for TV channel - CNN - 20110312:04:24:00
General they have very large stresses associated with them, so the displacement can be very large, and also they tend to be the faults they often find under water just off the coastline. so they are generally speaking, are going to be the kinds of earthquakes that produce these tsunamis. >> i know that japan has a very sophisticated tsunami warning system. how well did it work on this occasion? >> so the seismic sensor system is -- we put motion detectors on land all over the globe really, and the energy that emits from the earthquake comes out through the hard rock of the earth. it travels ve...