Observations of sound-speed fluctuations on the New Jersey continental shelf in the summer of 2006

The Journal of the Acoustical Society of America
John A ColosiBruce D Cornuelle

Abstract

Environmental sensors moored on the New Jersey continental shelf tracked constant density surfaces (isopycnals) for 35 days in the summer of 2006. Sound-speed fluctuations from internal-wave vertical isopycnal displacements and from temperature/salinity variability along isopycnals (spiciness) are analyzed using frequency spectra and vertical covariance functions. Three varieties of internal waves are studied: Diffuse broadband internal waves (akin to waves fitting the deep water Garrett/Munk spectrum), internal tides, and, to a lesser extent, nonlinear internal waves. These internal-wave contributions are approximately distinct in the frequency domain. It is found that in the main thermocline spicy thermohaline structure dominates the root mean square sound-speed variability, with smaller contributions coming from (in order) nonlinear internal waves, diffuse internal waves, and internal tides. The frequency spectra of internal-wave displacements and of spiciness have similar form, likely due to the advection of variable-spiciness water masses by horizontal internal-wave currents, although there are technical limitations to the observations at high frequency. In the low-frequency, internal-wave band the internal-wave spectrum f...Continue Reading

References

Sep 30, 2003·The Journal of the Acoustical Society of America·Francisco J Beron-VeraGeorge M Zaslavsky
Mar 14, 2007·The Journal of the Acoustical Society of America·John R ApelJames F Lynch
Dec 3, 2008·The Journal of the Acoustical Society of America·James Lynch, Dajun Tang
Sep 11, 2009·The Journal of the Acoustical Society of America·John A Colosi, Andrey K Morozov
Feb 23, 2012·The Journal of the Acoustical Society of America·John A ColosiAndrey K Morozov

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Citations

Feb 23, 2012·The Journal of the Acoustical Society of America·John A ColosiAndrey K Morozov
Feb 23, 2012·The Journal of the Acoustical Society of America·Ying-Tsong LinJames F Lynch
Oct 15, 2013·The Journal of the Acoustical Society of America·John A ColosiSteven R Ramp
Oct 15, 2013·The Journal of the Acoustical Society of America·Brian S PowellBruce D Cornuelle
Jul 6, 2014·The Journal of the Acoustical Society of America·Kaustubha Raghukumar, John A Colosi
Jul 6, 2014·The Journal of the Acoustical Society of America·Benjamin A JonesTimothy K Stanton
May 23, 2015·The Journal of the Acoustical Society of America·Kaustubha Raghukumar, John A Colosi
Mar 3, 2018·The Journal of the Acoustical Society of America·Brendan J DeCourcyWilliam L Siegmann
Mar 27, 2021·The Journal of the Acoustical Society of America·Murat KucukosmanogluDaniel J Torres
May 5, 2021·The Journal of the Acoustical Society of America·Timothy F DudaYing-Tsong Lin

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