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dc.contributor.authorHamilton, Peter  Concept link
dc.contributor.authorLeben, Robert  Concept link
dc.contributor.authorBower, Amy S.  Concept link
dc.contributor.authorFurey, Heather H.  Concept link
dc.contributor.authorPerez-Brunius, Paula  Concept link
dc.date.accessioned2018-07-12T16:19:22Z
dc.date.available2018-10-12T16:43:46Z
dc.date.issued2018-04-04
dc.identifier.citationJournal of Physical Oceanography 48 (2018): 773-794en_US
dc.identifier.urihttps://hdl.handle.net/1912/10466
dc.descriptionAuthor Posting. © American Meteorological Society, 2018. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 48 (2018): 773-794, doi:10.1175/JPO-D-17-0205.1.en_US
dc.description.abstractFourteen autonomous profiling floats, equipped with CTDs, were deployed in the deep eastern and western basins of the Gulf of Mexico over a four-year interval (July 2011–August 2015), producing a total of 706 casts. This is the first time since the early 1970s that there has been a comprehensive survey of water masses in the deep basins of the Gulf, with better vertical resolution than available from older ship-based surveys. Seven floats had 14-day cycles with parking depths of 1500 m, and the other half from the U.S. Argo program had varying cycle times. Maps of characteristic water masses, including Subtropical Underwater, Antarctic Intermediate Water (AAIW), and North Atlantic Deep Water, showed gradients from east to west, consistent with their sources being within the Loop Current (LC) and the Yucatan Channel waters. Altimeter SSH was used to characterize profiles being in LC or LC eddy water or in cold eddies. The two-layer nature of the deep Gulf shows isotherms being deeper in the warm anticyclonic LC and LC eddies and shallower in the cold cyclones. Mixed layer depths have an average seasonal signal that shows maximum depths (~60 m) in January and a minimum in June–July (~20 m). Basin-mean steric heights from 0–50-m dynamic heights and altimeter SSH show a seasonal range of ~12 cm, with significant interannual variability. The translation of LC eddies across the western basin produces a region of low homogeneous potential vorticity centered over the deepest part of the western basin.en_US
dc.description.sponsorshipThe authors were supported by the Department of the Interior, Bureau of Ocean Energy Management (BOEM), Contract M08PC20043 to Leidos, Inc., Raleigh, North Carolina.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JPO-D-17-0205.1
dc.subjectEddiesen_US
dc.subjectMixingen_US
dc.subjectPotential vorticityen_US
dc.subjectSurface layeren_US
dc.subjectWater massesen_US
dc.titleHydrography of the Gulf of Mexico using autonomous floatsen_US
dc.typeArticleen_US
dc.description.embargo2018-10-04en_US
dc.identifier.doi10.1175/JPO-D-17-0205.1


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