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    Preliminary acoustic and oceanographic observations from the winter Primer experiment

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    WHOI-98-19.pdf (5.820Mb)
    Date
    1998-10
    Author
    Newhall, Arthur E.  Concept link
    von der Heydt, Keith  Concept link
    Sperry, Brian J.  Concept link
    Gawarkiewicz, Glen G.  Concept link
    Lynch, James F.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/327
    Location
    Middle Atlantic Bight
    DOI
    10.1575/1912/327
    Keyword
     Primer experiment; Shallow water acoustics; Shelfbreak front; Endeavor (Ship: 1976-) Cruise 
    Abstract
    A joint acoustics and physical oceanography experiment was conducted in the winter of 1997 on the shell break and continental slope south of New England in the Middle Atlantic Bight (figure 1). This experiment, Primer4, provided a seasonal contrast to the previous summer Primer3 experiment and had the same goals and tasks: to study the thermohaline variability and structure of the shelfbreak front and its effects on acoustic propagation. To accomplish the linked oceanographic and acoustic objectives of this experiment, a combination of measurements (fig 2) were made. Seasoar hydrography, shipboard ADCP measurements, Satellite IR sea surface temperature field observations, and AXT drops were employed to study the larger scale oceanographic fields. To study the finer scale, which includes internal waves, a number of rapid-sampling thermistor strings and current meters, including a moored, upward looking ADCP, were deployed. The acoustics components consisted of three 400 Hz tomography transceivers, a 224 Hz source and two hydrophone arrays. To study the geoacoustic parameters in the bottom a number of SUS charges were also deployed. The field setup was approximately the same for both the summer 1996 and winter 1997 experiments; however the weather conditions and the thermal structure of the mixed layer were radically different. This report is dedicated to the data from the Winter 1997 Primer4 experiment.
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    • Applied Ocean Physics and Engineering (AOP&E)
    • WHOI Technical Reports
    Suggested Citation
    Technical Report: Newhall, Arthur E., von der Heydt, Keith, Sperry, Brian J., Gawarkiewicz, Glen G., Lynch, James F., "Preliminary acoustic and oceanographic observations from the winter Primer experiment", 1998-10, DOI:10.1575/1912/327, https://hdl.handle.net/1912/327
     

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