Observations, characterizations, and acoustic effects of nonlinear internal waves on the Mid‐Atlantic Bight continental shelf

1996 ◽  
Vol 100 (4) ◽  
pp. 2613-2613
Author(s):  
Ching‐Sang Chiu ◽  
James F. Lynch ◽  
Marshall Orr ◽  
Donald W. Taube ◽  
Seng L. Ng
Keyword(s):  
Continental Shelf ◽  
Internal Waves ◽  
Nonlinear Internal Waves

scholarly journals Energy transformations and dissipation of nonlinear internal waves over New Jersey's continental shelf

2010 ◽  
Vol 17 (4) ◽  
pp. 345-360 ◽  
Author(s):  
E. L. Shroyer ◽  
J. N. Moum ◽  
J. D. Nash
Keyword(s):  
Continental Shelf ◽  
Internal Waves ◽  
Turbulent Mixing ◽  
Internal Tide ◽  
Flux Divergence ◽  
Wave Interactions ◽  
Nonlinear Internal Waves ◽  
Dissipative Loss ◽  
Peak Energy

Abstract. The energetics of large amplitude, high-frequency nonlinear internal waves (NLIWs) observed over the New Jersey continental shelf are summarized from ship and mooring data acquired in August 2006. NLIW energy was typically on the order of 105 Jm−1, and the wave dissipative loss was near 50 W m−1. However, wave energies (dissipations) were ~10 (~2) times greater than these values during a particular week-long period. In general, the leading waves in a packet grew in energy across the outer shelf, reached peak values near 40 km inshore of the shelf break, and then lost energy to turbulent mixing. Wave growth was attributed to the bore-like nature of the internal tide, as wave groups that exhibited larger long-term (lasting for a few hours) displacements of the pycnocline offshore typically had greater energy inshore. For ship-observed NLIWs, the average dissipative loss over the region of decay scaled with the peak energy in waves; extending this scaling to mooring data produces estimates of NLIW dissipative loss consistent with those made using the flux divergence of wave energy. The decay time scale of the NLIWs was approximately 12 h corresponding to a length scale of 35 km (O(100) wavelengths). Imposed on these larger scale energetic trends, were short, rapid exchanges associated with wave interactions and shoaling on a localized topographic rise. Both of these events resulted in the onset of shear instabilities and large energy loss to turbulent mixing.

Observations of noise generated by nonlinear internal waves on the continental shelf during the SW06 experiment

2008 ◽  
Vol 123 (5) ◽  
pp. 3589-3589
Author(s):  
Andrey N. Serebryany ◽  
Arthur Newhall ◽  
James F. Lynch
Keyword(s):  
Continental Shelf ◽  
Internal Waves ◽  
Nonlinear Internal Waves

Nonlinear internal waves on the California continental shelf

1985 ◽  
Vol 90 (C4) ◽  
pp. 7256 ◽  
Author(s):  
Thomas L. Howell ◽  
Wendell S. Brown
Keyword(s):  
Continental Shelf ◽  
Internal Waves ◽  
Nonlinear Internal Waves

scholarly journals Generation and Propagation of Nonlinear Internal Waves in Sheared Currents Over the Washington Continental Shelf

2018 ◽  
Vol 123 (4) ◽  
pp. 2381-2400 ◽  
Author(s):  
Madeleine M. Hamann ◽  
Matthew H. Alford ◽  
John B. Mickett
Keyword(s):  
Continental Shelf ◽  
Internal Waves ◽  
Nonlinear Internal Waves

scholarly journals Observations of nonlinear internal waves on the outer New England continental shelf during the summer Shelfbreak Primer study

2001 ◽  
Vol 106 (C5) ◽  
pp. 9587-9601 ◽  
Author(s):  
John A. Colosi ◽  
Robert C. Beardsley ◽  
James F. Lynch ◽  
Glen Gawarkiewicz ◽  
Ching-Sang Chiu ◽  
...  
Keyword(s):  
Continental Shelf ◽  
New England ◽  
Internal Waves ◽  
Nonlinear Internal Waves

scholarly journals Statistics of Nonlinear Internal Waves during the Shallow Water 2006 Experiment

2016 ◽  
Vol 33 (4) ◽  
pp. 839-846 ◽  
Author(s):  
Mohsen Badiey ◽  
Lin Wan ◽  
James F. Lynch
Keyword(s):  
Continental Shelf ◽  
Shallow Water ◽  
Internal Waves ◽  
Three Dimensional ◽  
Propagation Speed ◽  
Mapping Technique ◽  
Nonlinear Internal Waves ◽  
Ocean Environment ◽  
Reference Track ◽  
Time Varying Environment

AbstractDuring the Shallow Water Acoustic Experiment 2006 (SW06) conducted on the New Jersey continental shelf in the summer of 2006, detailed measurements of the ocean environment were made along a fixed reference track that was parallel to the continental shelf. The time-varying environment induced by nonlinear internal waves (NLIWs) was recorded by an array of moored thermistor chains and by X-band radars from the attending research vessels. Using a mapping technique, the three-dimensional (3D) temperature field for over a month of NLIW events is reconstructed and analyzed to provide a statistical summary of important NLIW parameters, such as the NLIW propagation speed, direction, and amplitude. The results in this paper can be used as a database for studying the NLIW generation, propagation, and fidelity of nonlinear internal wave models.

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