contributor author | Smith, David C. | |
contributor author | O'Brien, J. J. | |
date accessioned | 2017-06-09T14:46:44Z | |
date available | 2017-06-09T14:46:44Z | |
date copyright | 1983/09/01 | |
date issued | 1983 | |
identifier issn | 0022-3670 | |
identifier other | ams-26574.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4163483 | |
description abstract | The propagation of an isolated mesoscale eddy onto a western bounding topographic slope is examined through the use of a two-layer, primitive equation, numerical model. Variable parameters in the study are sense of rotation (cyclonic/anticyclonic), vertical structure (baroclinic, barotropic), and layer thickness ratio (H1/H2). Eddy size and strength (rotational velocity) and frictional parameterization are fixed. Dispersion in the isolated eddy is induced by planetary and topographic beta-effects, giving the eddy an asymmetric distribution. This asymmetric distribution allows for nonlinear self-advective propagation tendencies. These nonlinear tendencies play a key role in the direction of propagation of the eddy. Specifically, in a quiescient background, an anticyclone can have eastward propagation tendencies which can overcome planetary and topographic beta-effects. Conversely, cyclones can have westward propagation velocities which are augmented (greater than maximum Rossby wave phase speed) by the presence of a topographic slope. This suggests that cyclones may be more likely to propagate onto a continental shelf region than their anticyclonic counterparts of equal strength. | |
publisher | American Meteorological Society | |
title | The Interaction of a Two-Layer Isolated Mesoscale Eddy With Bottom Topography | |
type | Journal Paper | |
journal volume | 13 | |
journal issue | 9 | |
journal title | Journal of Physical Oceanography | |
identifier doi | 10.1175/1520-0485(1983)013<1681:TIOATL>2.0.CO;2 | |
journal fristpage | 1681 | |
journal lastpage | 1697 | |
tree | Journal of Physical Oceanography:;1983:;Volume( 013 ):;issue: 009 | |
contenttype | Fulltext | |