Note on the Beam Structure in Step-Trapped Internal Tides-Reference-Cited by-同舟云学术

Note on the Beam Structure in Step-Trapped Internal Tides

Published:2024-03 Issue:3 Volume:54 Page:871-875
ISSN:0022-3670
Container-title:Journal of Physical Oceanography
language:
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Author:

Sanders Paul A.¹,Dorrestijn Martijn D.¹,Gerkema Theo²^ORCID

Affiliation:

1. a Department of Applied Physics, Eindhoven University of Technology, Eindhoven, Netherlands

2. b Department of Estuarine and Delta Systems, NIOZ Royal Netherlands Institute for Sea Research, Yerseke, Netherlands

Abstract

Abstract The along-slope propagation of subinertial trapped internal tides is studied for the configuration of a simple step. It is revealed that they form a beam structure in the along-slope direction that is evanescent above the top of the step; these beams lack strict periodicity in the along-slope direction. As in classical internal Kelvin waves, they become less sharp away from the step, as higher modes decay more rapidly in the cross-slope direction. We discuss implications for abyssal mixing and outline the necessary ingredients for their generation.

Publisher

American Meteorological Society

Link

https://journals.ametsoc.org/downloadpdf/journals/phoc/54/3/JPO-D-23-0084.1.xml

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