Variability of Internal Wave Strain Over the Western Boundary Region in the North Atlantic

Based on the CTD profiles and mooring measurements of the Line W program in the North Atlantic about 35°N/70°W, we investigated the spatial variability of internal wave-induced strain variance along the Line W section and the associated reasons. The results showed that the internal wave strain varia...

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Bibliographic Details
Published in:Frontiers in Earth Science
Main Authors: Liming Fan, Xin Wang
Format: Article in Journal/Newspaper
Language:English
Published: Frontiers Media S.A. 2022
Subjects:
strain variance
internal waves
mesoscale eddies
wave-wave interactions
North Atlantic
Science
Q
Online Access:https://doi.org/10.3389/feart.2022.855644
https://doaj.org/article/0322e690f57343399f0714ac9c1b6084
Description
Summary:Based on the CTD profiles and mooring measurements of the Line W program in the North Atlantic about 35°N/70°W, we investigated the spatial variability of internal wave-induced strain variance along the Line W section and the associated reasons. The results showed that the internal wave strain variance over the slope could be up to five times larger than that in the interior. We have validated that internal tides and near-inertial waves were not the crucial processes for causing this variability. Meanwhile, we found that the high-frequency internal waves generated by the interaction of anticyclonic eddy and low-frequency internal waves may be a potential cause of strain enhancement. This study implies a potential route of mesoscale eddies to enhance the strain variance induced by internal waves.

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