Preliminary acoustic and oceanographic observations from the winter Primer experiment
Newhall, Arthur E.
von der Heydt, Keith
Sperry, Brian J.
Gawarkiewicz, Glen G.
Lynch, James F.
MetadataShow full item record
LocationMiddle Atlantic Bight
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.
Showing items related by title, author, creator and subject.
A large-amplitude meander of the shelfbreak front during summer south of New England : observations from the Shelfbreak PRIMER experiment Gawarkiewicz, Glen G.; Brink, Kenneth H.; Bahr, Frank B.; Beardsley, Robert C.; Caruso, Michael J.; Lynch, James F.; Chiu, Ching-Sang (American Geophysical Union, 2004-03-04)In order to examine spatial and temporal variability of the shelfbreak front during peak stratification, repeated surveys using a towed undulating vehicle (SeaSoar) are used to describe the evolution of shelfbreak frontal ...
An economics primer for coastal zone management : basic concepts and methods from microeconomics, public finance, and environmental and resource economics Edwards, Steven F. (Woods Hole Oceanographic Institution, 1986-01)While the economic impacts of resource use pervade discussions of coastal zone management, most discourses tend to be ill-defined and incomplete, and to lack a solid basis in economic theory. This primer was written to ...
Acoustic scattering from sand dollars (Dendraster excentricus) : modeling as high aspect ratio oblate objects and comparison to experiment Dietzen, Gregory C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09)Benthic shells can contribute greatly to the scattering variability of the ocean bottom, particularly at low grazing angles. Among the effects of shell aggregates are increased scattering strength and potential subcritical ...