Acoustic imaging of the New England shelf-slope water mass interfaces

PULSED high frequency acoustics has been shown to have unique applications in the detection and measurement of oceanic phenomena such as internal waves 1–3 and dispersion of ocean-dumped sewage sludge 4,5 or dredge material 6 . With moderate to high pulse repetition rates, a virtually continuous rec...

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Bibliographic Details
Published in:Nature (London) 1977-01, Vol.269 (5631), p.790-791
Main Authors: NEWMAN, FRED C, PRONI, JOHN R, WALTER, DONALD J, BYRNE, H. MICHAEL
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:PULSED high frequency acoustics has been shown to have unique applications in the detection and measurement of oceanic phenomena such as internal waves 1–3 and dispersion of ocean-dumped sewage sludge 4,5 or dredge material 6 . With moderate to high pulse repetition rates, a virtually continuous record of water column scattering strength is available to depths of the order of 500 m from a ship travelling at speeds of 4 or 5 knots. We used this feature to detect acoustically the interfaces associated with an intrusion of cold New England shelf water into the warmer slope water during a 9-d period in June 1976.
ISSN:0028-0836
1476-4687
DOI:10.1038/269790a0