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    Sonar research conducted during the period 1 October - 31 December 1961

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    WHOI_62_17 (17.32Mb)
    Date
    1962-04
    Author
    Woods Hole Oceanographic Institution, /  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/25171
    DOI
    10.1575/1912/25171
    Keyword
     Sonar; Underwater acoustics; Submarine geology 
    Abstract
    Research at sea during this three month period, supported by Contract NObsr-72521, was carried out mostly during the latter portion of the CHAIN Cruise 21 to the eastern Mediterranean. Near-surface sound transmission runs were made with the aid of two foreign ships in the eastern Mediterranean and Tyrrhenian Sea. Sound velocity measurements were made there also. Reverberation and back-scatter measurements using half pound explosives as sound sources were recorded on magnetic tape for future analysis. Further, at several places during the cruise acoustic reflectivity of the sea-floor was measured by means of a semi-automatic system employing the Precision Graphic Recorder and the Edo UQN Echo Sounder. Research other than that on CHAIN Cruise 21, included ambient noise studies of recorded signals from finback whales, and analysis of data from previous observations at sea.
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    Suggested Citation
    Woods Hole Oceanographic Institution, /. (1962). Sonar research conducted during the period 1 October - 31 December 1961. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/25171
     

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