The refraction of sound waves then causes sound to be trapped in the zone, called a SOFAR (sound fixing and ranging) channel.
(The refraction of sound waves; causes; sound to be trapped in the zone; T:then) Context(The refraction of sound waves causes,List([0, 41))):(sound; to be trapped; in the zone)
The refraction of sound waves causes,List([0, 41))
The refraction of sound waves sound
causes to be trapped
sound to be trapped in the zone T:then
in the zone