CNN Legal View With Ashleigh Banfield December 31, 2014 17:36:00
Debris site if the pinger can't find it. this emits sound. >> reporter: like hydrophones, sonars work better in very deep water. but coleman says in shallow water, the search can move along more quickly. sonar is just showing us what's at the bottom, right? >> exactly. it's emitting that sound. as the sound comes back off the bottom, it's interpreting it to draw a 3-d image of what's on the sea floor. and it also generates a top-down image. >> reporter: that imagine will help investigators mark the debris field so the process of salvaging as much of the plane can begin. stephanie elam, cnn. >>...
Source: archive.org