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SOFAR channel
SOFAR channel(sound channel) An acronym for the SOund Fixing And Ranging channel, a zone in the oceanic water column at a depth of about 1500 m, where the velocity of sound is at a minimum value. Sound passing through the zone is refracted upwards or downwards back into the zone, with little loss of energy, causing sound energy to be trapped in a zone of well-defined depth. The SOFAR channel may be used for the transmission of sound over long distances, exceeding 28 000 km, and can be used to track free-drifting, subsurface, neutrally buoyant floats.
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Cite this article
MICHAEL ALLABY. "SOFAR channel." A Dictionary of Ecology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "SOFAR channel." A Dictionary of Ecology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O14-SOFARchannel.html MICHAEL ALLABY. "SOFAR channel." A Dictionary of Ecology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-SOFARchannel.html |
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SOFAR channel
SOFAR channel (sound channel) Acronym for the SOund Fixing And Ranging channel, a zone in the oceanic water column at a depth of about 1500 m where the velocity of sound is at a minimum value. Sound passing through the zone is refracted upwards or downwards back into the zone, with little loss of energy, causing sound energy to be trapped in a zone of well-defined depth. The SOFAR channel may be used for the transmission of sound over long distances, exceeding 28 000 km, and can be used to track free-drifting, subsurface, neutrally buoyant floats.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "SOFAR channel." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "SOFAR channel." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-SOFARchannel.html AILSA ALLABY and MICHAEL ALLABY. "SOFAR channel." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-SOFARchannel.html |
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