CNN CNN Newsroom April 16, 2014 13:08:00
Viewers anyway who have just come out of a winter, its very much like a hard-packed snow with a light dusting of powder on top. for sonar searching, what youre getting is youre throwing sound out into the water and its being bounced back off objects and returned to back, in this case bluefin. depending on what the sound is hitting, it gives a different kind of return. it will enable searchers to distinguish between the natural terrain, the mud if you like, and anything human made like aircraft p...
Source: archive.org