George, K C (1974) Echo sounding-Its principles and applications in fisheries. Seafood Export Journal, 6 (10). pp. 37-42.
Ultrasound will be reflected better by smaller objects such as fish; also most of the audibIe noise from the engine and running of the ship will not be picked up when using a receiver tuned to ultra sonic frequencies.
|Uncontrolled Keywords:||Echo sounding; principles; applications; fisheries|
|Subjects:||Fish and Fisheries|
Oceanography > Acoustics
|Divisions:||CMFRI-Cochin > Fishery Environment|
|Deposited By:||INVALID USER|
|Deposited On:||03 Nov 2010 16:50|
|Last Modified:||03 Nov 2010 16:50|
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