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dc.contributor.author
Chidichimo, María Paz
dc.contributor.author
Donohue, Kathleen A.
dc.contributor.author
Watts, D. Randolph
dc.contributor.author
Tracey, Karen L.
dc.date.available
2018-02-06T15:44:34Z
dc.date.issued
2014-07
dc.identifier.citation
Chidichimo, María Paz; Donohue, Kathleen A.; Watts, D. Randolph; Tracey, Karen L.; Baroclinic Transport Time Series of the Antarctic Circumpolar Current Measured in Drake Passage; American Meteorological Society; Journal of Physical Oceanography; 44; 7; 7-2014; 1829-1853
dc.identifier.issn
0022-3670
dc.identifier.uri
http://hdl.handle.net/11336/35769
dc.description.abstract
The first multiyear continuous time series of Antarctic Circumpolar Current (ACC) baroclinic transport through Drake Passage measured by moored observations is presented. From 2007 to 2011, 19 current- and pressure-recording inverted echo sounders and 3 current-meter moorings were deployed in Drake Passage to monitor the transport during the cDrake experiment. Full-depth ACC baroclinic transport relative to the bottom has a mean strength of 127.7 ± 1.0 Sverdrups (Sv; 1 Sv = 106 m3 s-1) with a standard deviation of 8.1 Sv. Mean annual baroclinic transport is remarkably steady. About 65% of the baroclinic transport variance is associated with time periods shorter than 60 days with peaks at 20 and 55 days. Nearly 28% of apparent energy in the spectrum computed from transport subsampled at the 10-day repeat cycle of the Jason altimeter results from aliasing of high-frequency signals. Approximately 80% of the total baroclinic transport is carried by the Subantarctic Front and the Polar Front. Partitioning the baroclinic transport among neutral density γn layers gives 39.2 Sv for Subantarctic Surface Water and Antarctic Intermediate Water (γn < 27.5 kg m-3), 57.5 Sv for Upper Circumpolar Deep Water (27.5 < γn < 28.0 kg m-3), 27.7 Sv for Lower Circumpolar Deep Water (28.0 < γn < 28.2 kg m-3), and 3.3 Sv for Antarctic Bottom Water (γn > 28.2 kg m-3). The transport standard deviation in these layers decreases with depth (4.0, 3.1, 2.1, and 1.1 Sv, respectively). The transport associated with each of these water masses is statistically steady. The ACC baroclinic transport exhibits considerable variability and is a major contributor to total ACC transport variability.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Meteorological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Acc
dc.subject
Baroclinic Transport
dc.subject
Time Series
dc.subject
Drake Passage
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Baroclinic Transport Time Series of the Antarctic Circumpolar Current Measured in Drake Passage
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-02-05T20:13:47Z
dc.identifier.eissn
1520-0485
dc.journal.volume
44
dc.journal.number
7
dc.journal.pagination
1829-1853
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Boston
dc.description.fil
Fil: Chidichimo, María Paz. University of Rhode Island. Graduate School of Oceanography; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina
dc.description.fil
Fil: Donohue, Kathleen A.. University of Rhode Island. Graduate School of Oceanography; Estados Unidos
dc.description.fil
Fil: Watts, D. Randolph. University of Rhode Island. Graduate School of Oceanography; Estados Unidos
dc.description.fil
Fil: Tracey, Karen L.. University of Rhode Island. Graduate School of Oceanography; Estados Unidos
dc.journal.title
Journal of Physical Oceanography
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.ametsoc.org/doi/abs/10.1175/JPO-D-13-071.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1175/JPO-D-13-071.1
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