Doppler-shifted inertial oscillations on a β plane

Zhai, X., Greatbatch, R.J. and Sheng, J. (2005) Doppler-shifted inertial oscillations on a β plane. Journal of Physical Oceanography, 35 (8). pp. 1480-1488. ISSN 0022-3670

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On the spherical earth, and in the absence of a background flow, the poleward propagation of near-inertial oscillations is restricted by the turning latitude. A background flow, on the other hand, provides a way to increase the apparent frequency of near-inertial waves through Doppler shifting. In this note, it is shown that near-inertial oscillations can be advected to latitudes higher than their turning latitude. Associated with the poleward advection there is a squeezing of the meridional wavelength. A numerical model is used to verify this result. The squeezed inertial oscillations are vulnerable to nonlinear interactions, which could eventually lead to small-scale dissipation and mixing.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
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Depositing User: Pure Connector
Date Deposited: 24 Oct 2013 21:23
Last Modified: 24 Oct 2022 04:51
DOI: 10.1175/JPO2764.1

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