SOFAR channel
= SOFAR channel
{wiki=SOFAR_channel}
The SOFAR channel, short for "Sound Fixing and Ranging" channel, is a horizontal layer of water in the ocean where sound speed reaches its minimum, creating a unique acoustic phenomenon. This channel typically forms at a depth of about 700 meters (or about 2,300 feet) in deep ocean waters, but its exact depth can vary based on factors such as temperature, salinity, and pressure.