Ocean Dynamics and Acoustic Fluctuations in the Fram Strait Marginal Ice Zone

Acoustic waves transmitted over a 100-kilometer path in the Fram Strait marginal ice zone undergo Doppler shifts and fluctuations around these shifts, the former due to quasi-steady motion of both acoustic source and receiver and the latter to unsteady motions of the water column and ice cover. Inte...

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Bibliographic Details
Published in:Science
Main Authors: Dyer, Ira, Dahl, Peter H., Baggeroer, Arthur B., Mikhalevsky, Peter N.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1987
Subjects:
Fram Strait
Online Access:http://dx.doi.org/10.1126/science.236.4800.435
https://www.science.org/doi/pdf/10.1126/science.236.4800.435
Description
Summary:Acoustic waves transmitted over a 100-kilometer path in the Fram Strait marginal ice zone undergo Doppler shifts and fluctuations around these shifts, the former due to quasi-steady motion of both acoustic source and receiver and the latter to unsteady motions of the water column and ice cover. Internal waves and differential Doppler shift usually account for such fluctuations in the deep temperate ocean but only partially explain the results obtained in the marginal ice zone. There the fluctuations are more energetic and may be caused alternatively or additionally by comparably energetic fluctuations in ice-edge eddies or other mesoscale motions.

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