sound channel sound channelan area of slow sound speed that causes sound waves to become focused at this water depthRelated Articles: Glossary: sound channel axisHow fast does sound travel?CTBT Hydrophone StationHistory of the SOFAR ChannelHow is sound used to monitor nuclear testing?Sound Surveillance System (SOSUS)Sound Speed MinimumSound Travel in the SOFAR ChannelHow does sound travel long distances? The SOFAR ChannelSound Channel Variability Chris Knowlton2017-02-26T20:10:01-05:00