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Showing 1 to 19 of 19 for “"Antarctic Intermediate Water"”.
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The Gulf Stream: along-stream evolution of volume transport and water properties observed by underwater gliders
… collected using Spray autonomous underwater gliders from 2004 through 2020 fill a 1500-km-long gap in longer-term sustained subsurface measurements of the Gulf Stream. The gliders provide concurrent, high-resolution measurements of Gulf Stream hydrography and velocity over more than 15 …
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The Gulf Stream: Along-stream evolution of volume transport and water properties observed by underwater gliders
… collected using Spray autonomous underwater gliders from 2004 through 2020 fill a 1500-km-long gap in longer-term sustained subsurface measurements of the Gulf Stream. The gliders provide concurrent, high-resolution measurements of Gulf Stream hydrography and velocity over more than 15 …
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Ocean circulation and carbon cycle dynamics in the Pacific Southern Ocean during Late Pleistocene interglacials
… global ocean overturning circulation, enabling water mass exchange between ocean basins, driving Antarctic Bottom Water and Antarctic Intermediate Water formation and providing the major return path of Circumpolar Deep Water (CDW) to the ocean surface. The Pacific Ocean is the largest aquatic …
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Western South Atlantic holocene and glacial deepwater hydrography derived from benthic foraminiferal Cd/Ca and stable carbon isotope data
Today, deep waters produced in the North Atlantic are exported through the western South Atlantic. Antarctic intermediate water AAJW also enters the Atlantic in this region. Circumpolar deep water (CDW) fills the depths below AAIW and above and below northern source waters. A depth transect of …
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Western South Atlantic holocene and glacial deepwater hydrography derived from benthic foraminiferal Cd/Ca and stable carbon isotope data
Today, deep waters produced in the North Atlantic are exported through the western South Atlantic. Antarctic intermediate water (AAIW) also enters the Atlantic in this region. Circumpolar deep water (CDW) fills the depths below AAIW and above and below northern source waters. A depth transect of …
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Thermohaline variability of AAIW in the Atlantic sector of the Southern Ocean investigated using an Altimetry Gravest Empirical Mode
… the Atlantic with the Indian Ocean and the Antarctic Circumpolar Current, thereby acting as a major conduit within global ocean circulation. Thermohaline transports in this region are widely thought to have a critical influence on global climate. Yet magnitudes of the associated heat and …
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Insights into Glacial Terminations from a South Atlantic Perspective
… and biological productivity within the sub-Antarctic zone. A change in the deep ocean density structure has been hypothesised to have resulted in the release of CO\textsubscript{2 } from the deep ocean. Centennial records from the sub-Antarctic are used to reconstruct deep and intermediate …
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A Multidisciplinary Investigation of the Intermediate Depths of the Atlantic Ocean: AAIW delta^13C Variability During the Younger Dryas and Lithoherms in the Straits of Florida
A transect of cores ranging from 798 m to 1585 m water depth in the South Atlantic Ocean document the relative intermediate water mass nutrient geometry and stable isotopic variability of AAIW during the Younger Dryas cooling event. The data reveal concurrent delta^13 C and delta^18 O excursions of …
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The southern termination of the East Madagascar current
… The EMC is shown to consist of Tropical Surface Water, Subtropical Surface Water and South Indian Central Water. In the region of the EMC Antarctic Intermediate Water, North Indian Deep Water and North Atlantic Deep Water/Circumpolar Deep Water were found. There is clear evidence of the presence …
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Neogene to quaternary foraminifera from the western margin of southern Africa
… cores from the Namibian shelf (199 to 309 m water depth) and three cores from the western slope (874 to 3631 m water depth) of South Africa were studied to determine the middle Miocene to Quaternary stratigraphy, palaeoenvironment and palaeoceanography of the western margin of southern …
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The upper ocean structure of the Antarctic circumpolar current in the vicinity of the South-West Indian ridge
… dynamics and the structural modification of the Antarctic Circumpolar Current (ACC) when it encounters the complex SWIR. High sea surface variability has been observed at the southwest Indian sector of the Southern Ocean, specifically at and around 50°S;30°E. As the strong eastward flowing ACC …
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A survey of anticyclonic mesoscale eddies, within the Southern Ocean, and their propagation south from the South West Indian Ridge
… act as vehicles, transporting smaller bodies of water, with certain oceanographic characteristics, from one place to another within a larger body of water. The South West Indian Ridge [SWIR] is a topographically complex bathymetric feature which amplifies the production of mesoscale eddies in and …
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The physical oceanographic processes on the southeast African shelf and slope
… of temperature and salinity within the upper water masses but not within the deeper water masses. The same five water masses, Tropical Surface Water (TSW), Subtropical Surface Water (STSW), South Indian Central Water (SICW), Red Sea Water (RSW) as well as Antarctic Intermediate Water (AAIW), …
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Investigating Mesoscale, Submesoscale, and Mixing Ocean Dynamics in the Mozambique Channel Using Seismic and Simulation Datasets
… interactions using seismics: here water masses from the Indian and Atlantic ocean collide and interact, driving sharp thermohaline gradients and intense current flows interact with complex bathymetry to produce an energetic eddy field. First, a standard processing strategy was …
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Exchanges between hemispheres and gyres : a direct approach to the mean circulation of the equatorial Pacific
… of the mean conditions. A detailed study of the water mass distribution along the sections is the basis for choosing reference levels for the thermal wind shear in an initial guess circulation field. Using an inverse model, the initial guess circulation is adjusted such that volume, heat and salt …
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Aspects of Neogene palaeoceanography in the southern Tasman Sea (DSDP site 593)
… compositional data. Site 593 occurs in 1068 m water depth on the western flanks of the Challenger Plateau, west of central New Zealand. Through the last 40 Ma the plateau has accumulated up to 600 m of pelagic carbonate oozes. The modern physical oceanography of the region is reviewed to form a …
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Geochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacific
The relatively understudied intermediate waters of the world have been implicated as an important part of the global ocean circulation. This thesis discusses the intermediate waters of the Pacific over space and time. Initially, by using geochemical tracers to look at the present distribution, …
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Geochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacific
The relatively understudied intermediate waters of the world have been implicated as an important part of the global ocean circulation. This thesis discusses the intermediate waters of the Pacific over space and time. Initially, by using geochemical tracers to look at the present distribution, …