Shallow Scattering Layer in the Subarctic Pacific Ocean: Detection by High-Frequency Echo Sounder

Shallow scattering layers consisting mainly of Calanus cristatus were detected on a trans-Pacific crossing to depths of 60 meters with a high-frequency echo sounder. Biomass estimates of these layers indicate concentrations of zooplankton that are greater and more extensive than previously reported...

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Bibliographic Details
Published in:Science
Main Authors: Barraclough, W. E., LeBrasseur, R. J., Kennedy, O. D.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1969
Subjects:
Pacific
Subarctic
Online Access:http://dx.doi.org/10.1126/science.166.3905.611
https://www.science.org/doi/pdf/10.1126/science.166.3905.611
Description
Summary:Shallow scattering layers consisting mainly of Calanus cristatus were detected on a trans-Pacific crossing to depths of 60 meters with a high-frequency echo sounder. Biomass estimates of these layers indicate concentrations of zooplankton that are greater and more extensive than previously reported in the open ocean.

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