The Reflection of Unstable Baroclinic Waves and the Production of Mean Coastal CurrentsSource: Journal of Physical Oceanography:;1993:;Volume( 023 ):;issue: 009::page 2130Author:Pedlosky, Joseph
DOI: 10.1175/1520-0485(1993)023<2130:TROUBW>2.0.CO;2Publisher: American Meteorological Society
Abstract: The problem of the reflection of unstable baroclinic waves from straight boundaries inclined with respect to latitude circles is studied. The basic flow in which the incident unstable wave is embedded is a flow with only vertical shear flowing parallel to the boundary. The analysis is done for a two-layer model on the ? plane. For a wave packet centered on the most unstable wave, the reflection process produces two reflected modes, each trapped to the boundary. The trapping scale is of the order of the Rossby radius of deformation. This trapping occurs whenever the current is inclined with respect to a latitude circle, in which case all shears, no matter how small, will support unstable waves. It is argued that the trapped character of the reflected disturbance will produce a rectified current along the boundary with a net barotropic component.
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contributor author | Pedlosky, Joseph | |
date accessioned | 2017-06-09T14:50:53Z | |
date available | 2017-06-09T14:50:53Z | |
date copyright | 1993/09/01 | |
date issued | 1993 | |
identifier issn | 0022-3670 | |
identifier other | ams-28100.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4165180 | |
description abstract | The problem of the reflection of unstable baroclinic waves from straight boundaries inclined with respect to latitude circles is studied. The basic flow in which the incident unstable wave is embedded is a flow with only vertical shear flowing parallel to the boundary. The analysis is done for a two-layer model on the ? plane. For a wave packet centered on the most unstable wave, the reflection process produces two reflected modes, each trapped to the boundary. The trapping scale is of the order of the Rossby radius of deformation. This trapping occurs whenever the current is inclined with respect to a latitude circle, in which case all shears, no matter how small, will support unstable waves. It is argued that the trapped character of the reflected disturbance will produce a rectified current along the boundary with a net barotropic component. | |
publisher | American Meteorological Society | |
title | The Reflection of Unstable Baroclinic Waves and the Production of Mean Coastal Currents | |
type | Journal Paper | |
journal volume | 23 | |
journal issue | 9 | |
journal title | Journal of Physical Oceanography | |
identifier doi | 10.1175/1520-0485(1993)023<2130:TROUBW>2.0.CO;2 | |
journal fristpage | 2130 | |
journal lastpage | 2135 | |
tree | Journal of Physical Oceanography:;1993:;Volume( 023 ):;issue: 009 | |
contenttype | Fulltext |