Diaphus taaningi Norman, the principal component of a shallow sound-scattering layer in the Cariaco Trench, Venezuela

Authors

Ronald C. Baird, University of South Florida, Department of Marine Science, St. Petersburg, Florida 33701
Donald F. Wilson, Naval Research Laboratory, Ocean Sciences Division, Washington, D.C. 20375
Robert C. Beckett, Naval Research Laboratory, Ocean Sciences Division, Washington, D.C. 20375
Thomas L. Hopkins, University of South Florida, Department of Marine Science, St. Petersburg, Florida 33701

Abstract

A myctophid fish, Diaphus taaningi Norman, is the principal component of a distinct daytime sound-scattering layer lying near 250 m, well above the anoxic, hydrogen-sulfide zone of the Cariaco Trench. The scattering layer produced strong sonar echoes at 12, 25, and 50 kHz; mean sound-scattering strength at layer depth at 25 kHz was approximately --73 dB and at 50 kHz was approximately --67 dB....

Recommended Citation

Baird, Ronald C., Donald F. Wilson, Robert C. Beckett, and Thomas L. Hopkins. 1974. "Diaphus taaningi Norman, the principal component of a shallow sound-scattering layer in the Cariaco Trench, Venezuela." Journal of Marine Research 32, (2). https://elischolar.library.yale.edu/journal_of_marine_research/1291