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    Ceratoscopelus maderensis : pecular sound-scattering layer identified with this myctophid fish

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    WHOI-68-58.pdf (3.490Mb)
    Date
    1968-10
    Author
    Backus, Richard H.  Concept link
    Craddock, James E.  Concept link
    Haedrich, Richard L.  Concept link
    Shores, D. L.  Concept link
    Teal, John M.  Concept link
    Wing, A. S.  Concept link
    Mead, Giles W.  Concept link
    Clarke, William D.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/7406
    Location
    Western North Atlantic
    DOI
    10.1575/1912/7406
    Keyword
     Alvin (Submarine); Lanternfishes; Echo scattering layers 
    Abstract
    A sound- scattering layer, composed of discrete hyperbolic echo-sequences and apparently restricted to the Slope Water region of the western North Atlantic, has been identified from the Deep Submergence Research Vehicle ALVIN with schools of the myctophid fish Ceratoscopelus maderensis. By diving into the layer and using ALVIN's echo-ranging sonar, we approached and visually identified the sound scatterers. The number of echo sequences observed with the surface echo-sounder (1 /23. 76 x 105 cubic meters of water) checked roughly with the number of sonar targets observed from the submarine (1/7. 45 x 105 cubic meters) . The fish schools appeared to be 5 to 10 meters thick, 10 to 100 meters in diameter, and on centers 100 to 200 meters apart. Density within schools was estimated at 10 to 15 fish per cubic meter.
    Description
    Reprint. Science, vol. 160, no. 3831, 1968, pp. 991-993. Originally issued as Reference No. 68-58, series later renamed WHOI-.
    Collections
    • WHOI Technical Reports
    Suggested Citation
    Technical Report: Backus, Richard H., Craddock, James E., Haedrich, Richard L., Shores, D. L., Teal, John M., Wing, A. S., Mead, Giles W., Clarke, William D., "Ceratoscopelus maderensis : pecular sound-scattering layer identified with this myctophid fish", 1968-10, DOI:10.1575/1912/7406, https://hdl.handle.net/1912/7406
     

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