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|
|Depositing User:||Users 171 not found.|
|Date Deposited:||03 Nov 2010 11:20|
|Last Modified:||09 Sep 2015 15:27|
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