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Updated geostrophic circulation and volume transport from satellite data in the Southern Ocean
Published 2023-07-01“…From the 3D geostrophic currents, we also estimate the associated water volume transport (VT) and present the results for the ACC and the Drake Passage in the context of existing literature.Results: Our analysis yields a mean VT estimate of 15.9 ± 0.1 Sv per 1° cell within the ACC region and 149.2 ± 2.2 Sv for the Drake Passage ([60.5°S, 54.5°S] x [303.5°E]). …”
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Gill’s model of the Antarctic Circumpolar Current, revisited: The role of latitudinal variations in wind stress
Published 2015“…A substantial ACC remains when the wind jet is shifted north of the model Drake Passage, even by several thousand kilometers. The integral of the wind stress over the circumpolar streamlines is found to be a useful predictor of the magnitude of the volume transport through the model Drake Passage, although it is necessary to correct for basin-wide zonal pressure gradients in order to obtain good quantitative agreement.…”
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Different Oceanographic Regimes in the Vicinity of the Antarctic Peninsula Reflected in Benthic Nematode Communities.
Published 2015-01-01“…At the Weddell Sea side, benthic communities are influenced by cold deep-water formation and seasonal sea-ice conditions, whereas the Drake Passage side experiences milder oceanic conditions and strong dynamics of the Antarctic Circumpolar Current. …”
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On the dynamics of wind-driven circumpolar currents
Published 2001“…There is no support for the idea that Sverdrup balance determines the transport through Drake Passage.…”
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Boundary Upwelling of Antarctic Bottom Water by Topographic Turbulence
Published 2023-10-01“…Here, we investigate the processes underpinning such mixing, and the resulting water mass transformation, using an observationally forced, high‐resolution numerical model of the Drake Passage in the Southern Ocean. In the Drake Passage, the mixing of dense AABW formed in the Weddell Sea with lighter deep waters transported from the Pacific Ocean by the Antarctic Circumpolar Current is catalyzed by energetic flows impinging on rough topography. …”
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Impact of Cenozoic Antarctic continent-ocean configuration patterns on global climate change
Published 2021-10-01“…In this Review, we identify the Tasmania gateway and Drake Passage, and present their overlapping and interconnected tectonic, magmatic and sedimentary history of Antarctica, South America and Australia. …”
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Measurements of total alkalinity and inorganic dissolved carbon in the Atlantic Ocean and adjacent Southern Ocean between 2008 and 2010
Published 2014-05-01“…Water column dissolved inorganic carbon and total alkalinity were measured during five hydrographic sections in the Atlantic Ocean and Drake Passage. The work was funded through the Strategic Funding Initiative of the UK's Oceans2025 programme, which ran from 2007 to 2012. …”
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Model simulations of early westward flow across the Tasman Gateway during the early Eocene
Published 2016-04-01“…In contrast, an open Drake Passage, up to 517 m deep, leads to an eastward flow, even when the Tasman Gateway and the Australo-Antarctic gulf are entirely contained within the latitudes of easterly wind.…”
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Radiation and Dissipation of Internal Waves Generated by Geostrophic Motions Impinging on Small-Scale Topography: Theory
Published 2018“…The theoretical predictions are tested versus two-dimensional highresolution numerical simulations with parameters representative of Drake Passage. This work suggests that mixing in Drake Passage can be supported by geostrophic motions impinging on rough topography rather than by barotropic tidal motions, as is commonly assumed. …”
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Radiation and Dissipation of Internal Waves Generated by Geostrophic Motions Impinging on Small-Scale Topography: Theory
Published 2011“…The theoretical predictions are tested versus two-dimensional high-resolution numerical simulations with parameters representative of Drake Passage. This work suggests that mixing in Drake Passage can be supported by geostrophic motions impinging on rough topography rather than by barotropic tidal motions, as is commonly assumed.…”
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Cenozoic climatic changes drive evolution and dispersal of coastal benthic foraminifera in the Southern Ocean
Published 2021-10-01“…The gene flow across the Drake Passage, as well as between South America and South Georgia, seems to have occurred from the Late Miocene to the Early Pliocene. …”
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Tracking the spread of a passive tracer through Southern Ocean water masses
Published 2020-03-01“…Observational cross sections of the tracer were taken over 4 consecutive years as it drifted through Drake Passage and into the Atlantic Ocean. The tracer was released within a region of high salinity relative to surrounding waters at the same density. …”
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Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean
Published 2021-02-01“…Here the authors conduct trace metal incubation experiments across the Drake Passage, finding that manganese can play an unexpected role in restricting phytoplankton growth.…”
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A Hessian-Based Method for Uncertainty Quantification in Global Ocean State Estimation
Published 2014“…The UQ framework is applied to quantify Drake Passage transport uncertainties in a global idealized barotropic configuration of the MITgcm. …”
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A modified Ekman layer model
Published 2011-06-01“…The outcome of the suggested modification is compared with the relevant data measured in the Drake Passage.…”
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Spatial-temporal variations in surface ozone over Ushuaia and the Antarctic region: observations from in situ measurements, satellite data, and global models
Published 2018“…Our key findings were that the surface O 3 mixing ratio during MASEC’16 increased from a minimum of 5 ppb to ~ 10–13 ppb approaching the Drake Passage and the Coastal Antarctic Peninsula (CAP) region. …”
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Strength and variability of the Oligocene Southern Ocean surface temperature gradient
Published 2022-12-01“…The deepening of the Drake Passage cooled Antarctic coasts and increased the temperature gradient between Australia and Antarctica which ultimately enhanced thermal isolation of the Antarctic Ice sheet, according to biomarker derived temperature records and simulation output.…”
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