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Author
LaCasce, J.H. ; Escartin, J. ; Chassignet, E.P. ; Xu, X.
Title
Jet instability over smooth, corrugated and realistic bathymetry
Type
$loc['typeJournal Article']
Year
2018
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
Issue
Pages
Keywords
Abstract
The stability of a horizontally- and vertically-sheared surface jet is examined, with a focus on the vertical structure of the resultant eddies. Over a flat bottom, the instability is mixed baroclinic/barotropic, producing strong eddies at depth which are characteristically shifted downstream relative to the surface eddies. Baroclinic instability is suppressed over a large slope for retrograde jets (with a flow anti-parallel to topographic wave propagation), and to a lesser extent for prograde jets (with flow parallel to topographic wave propagation), as seen previously. In such cases, barotropic (lateral) instability dominates if the jet is sufficiently narrow. This yields surface eddies whose size is independent of the slope but proportional to the jet width. Deep eddies still form, forced by interfacial motion associated with the surface eddies, but they are weaker than under baroclinic instability and are vertically aligned with the surface eddies. A sinusoidal ridge acts similarly, suppressing baroclinic instability and favoring lateral instability in the upper layer. A ridge with a 1 km wavelength and an amplitude of roughly 10 m is sufficient to suppress baroclinic instability. Surveys of bottom roughness from bathymetry acquired with shipboard multibeam echosounding reveal that such heights are common, beneath the Kuroshio, the Antarctic Circumpolar Current and, to a lesser extent, the Gulf Stream. Consistent with this, vorticity and velocity cross sections from a 1/50° HYCOM simulation suggest that Gulf Stream eddies are vertically aligned, as in the linear stability calculations with strong topography. Thus lateral instability may be more common than previously thought, due to topography hindering vertical energy transfer.
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Series Editor
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ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
998
Permanent link to this record
Author
Penduff, T. ; Barnier, B. ; Dewar, W.K. ; O'Brien, J.J.
Title
Dynamical Response of the Oceanic Eddy Field to the North Atlantic Oscillation: A Model-Data Comparison
Type
$loc['typeJournal Article']
Year
2004
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
34
Issue
12
Pages
2615-2629
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
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Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
455
Permanent link to this record
Author
Arruda, W. ; Zharkov, V. ; Deremble, B. ; Nof, D. ; Chassignet, E.
Title
A New Model of Current Retroflection Applied to the Westward Protrusion of the Agulhas Current
Type
$loc['typeJournal Article']
Year
2014
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
44
Issue
12
Pages
3118-3138
Keywords
Abstract
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Thesis
Publisher
Place of Publication
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Summary Language
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Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
122
Permanent link to this record
Author
Sturges, W. ; Bozec, A.
Title
A Puzzling Disagreement between Observations and Numerical Models in the Central Gulf of Mexico
Type
$loc['typeJournal Article']
Year
2013
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
43
Issue
12
Pages
2673-2681
Keywords
Abstract
Address
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Thesis
Publisher
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Editor
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Summary Language
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Series Editor
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Edition
ISSN
0022-3670
ISBN
Medium
Area
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Conference
Funding
Deep-C
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
227
Permanent link to this record
Author
Bunge, L. ; Clarke, A.J.
Title
On the Warm Water Volume and Its Changing Relationship with ENSO
Type
$loc['typeJournal Article']
Year
2014
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
44
Issue
5
Pages
1372-1385
Keywords
Physical Meteorology and Climatology ; Climate variability ; ENSO ; Observational techniques and algorithms ; Climate records ; Variability ; Decadal variability ; Interannual variability
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Thesis
Publisher
Place of Publication
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Summary Language
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Edition
ISSN
0022-3670
ISBN
Medium
Area
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Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
156
Permanent link to this record
Author
Yan, Y. ; Chassignet, E.P. ; Qi, Y. ; Dewar, W.K.
Title
Freshening of Subsurface Waters in the Northwest Pacific Subtropical Gyre: Observations and Dynamics
Type
$loc['typeJournal Article']
Year
2013
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
43
Issue
12
Pages
2733-2751
Keywords
Abstract
Address
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Thesis
Publisher
Place of Publication
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Series Issue
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ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
178
Permanent link to this record
Author
Skiba, A.W. ; Zeng, L. ; Arbic, B.K. ; Müller, M. ; Godwin, W.J.
Title
On the Resonance and Shelf/Open-Ocean Coupling of the Global Diurnal Tides
Type
$loc['typeJournal Article']
Year
2013
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
43
Issue
7
Pages
1301-1324
Keywords
Tides
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
196
Permanent link to this record
Author
Nof, D. ; Zharkov, V. ; Arruda, W. ; Pichevin, T. ; Van Gorder, S. ; Paldor, N.
Title
Comments on “On the Steadiness of Separating Meandering Currents”
Type
$loc['typeJournal Article']
Year
2012
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
42
Issue
8
Pages
1366-1370
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Abstract
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Thesis
Publisher
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Summary Language
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ISSN
0022-3670
ISBN
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Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
243
Permanent link to this record
Author
Nof, D. ; Jia, Y. ; Chassignet, E. ; Bozec, A.
Title
Fast Wind-Induced Migration of Leddies in the South China Sea
Type
$loc['typeJournal Article']
Year
2011
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
41
Issue
9
Pages
1683-1693
Keywords
Eddies ; Seas ; gulfs ; bays ; Wind stress ; Numerical analysis/modeling ; Monsoons
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
324
Permanent link to this record
Author
Kara, A.B. ; Hurlburt, H.E. ; Rochford, P.A. ; O'Brien, J.J.
Title
The Impact of Water Turbidity on Interannual Sea Surface Temperature Simulations in a Layered Global Ocean Model*
Type
$loc['typeJournal Article']
Year
2004
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
34
Issue
2
Pages
345-359
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
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Summary Language
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Series Editor
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ISSN
0022-3670
ISBN
Medium
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Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
462
Permanent link to this record