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contributor authorSmith, David C.
contributor authorO'Brien, J. J.
date accessioned2017-06-09T14:46:44Z
date available2017-06-09T14:46:44Z
date copyright1983/09/01
date issued1983
identifier issn0022-3670
identifier otherams-26574.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4163483
description abstractThe 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.
publisherAmerican Meteorological Society
titleThe Interaction of a Two-Layer Isolated Mesoscale Eddy With Bottom Topography
typeJournal Paper
journal volume13
journal issue9
journal titleJournal of Physical Oceanography
identifier doi10.1175/1520-0485(1983)013<1681:TIOATL>2.0.CO;2
journal fristpage1681
journal lastpage1697
treeJournal of Physical Oceanography:;1983:;Volume( 013 ):;issue: 009
contenttypeFulltext


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