Generation of Hydroacoustic Waves by an Oscillating Ice Block in Arctic Zones

The time harmonic problem of propagating hydroacoustic waves generated in the ocean by a vertically oscillating ice block in arctic zones is discussed. The generated acoustic modes can result in orbital displacements of fluid parcels sufficiently high that may contribute to deep ocean currents and c...

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Bibliographic Details
Published in:Advances in Acoustics and Vibration
Main Author: Kadri, Usama
Other Authors: Massachusetts Institute of Technology. Department of Mathematics
Format: Article in Journal/Newspaper
Language:English
Published: Hindawi Publishing Corporation 2016
Subjects:
Online Access:http://hdl.handle.net/1721.1/103895
Description
Summary:The time harmonic problem of propagating hydroacoustic waves generated in the ocean by a vertically oscillating ice block in arctic zones is discussed. The generated acoustic modes can result in orbital displacements of fluid parcels sufficiently high that may contribute to deep ocean currents and circulation. This mechanism adds to current efforts for explaining ocean circulation from a snowball earth Neoproterozoic Era to greenhouse earth arctic conditions and raises a challenge as the extent of ice blocks shrinks towards an ice-free sea. Surprisingly, unlike the free-surface setting, here it is found that the higher acoustic modes exhibit a larger contribution.