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A Kinetic Energy Budget and Internal Instabilities in the Fine Resolution Antarctic Model
Kinetic Energy Budget Fine Resolution Antarctic Model Antarctic Circumpolar Current
2008/11/11
An energy analysis of the Fine Resolution Antarctic Model (FRAM) reveals the instability processes in the model. The main source of time-mean kinetic energy is the wind stress and the main sink is tra...
The Antarctic Circumpolar Wave: A Beta Effect in Ocean–AtmosphereCoupling over the Southern Ocean
Antarctic Circumpolar Wave Southern Ocean Ocean–AtmosphereCoupling
2008/10/23
The Antarctic circumpolar wave (ACW) is a nominal 4-yr climate signal in the ocean–atmosphere system in the Southern Ocean, propagating eastward at an average speed of 6–8 cm s−1, composed of tw...
Mesoscale Subduction at the Antarctic Polar Front Driven by Baroclinic Instability
Mesoscale Subduction Antarctic Polar Front Driven Baroclinic Instability
2008/8/7
A study of mesoscale subduction at the Antarctic Polar Front (PF) is conducted by use of hydrographic data from a high-resolution, quasi-synoptic survey of the front. The geostrophic velocity and isop...
Flow past a Cylinder on a β Plane, with Application to Gulf Stream Separation and the Antarctic Circumpolar Current
Gulf Stream Separation Antarctic Circumpolar Current
2008/7/25
The classical problem of flow past a cylinder is revisited in the context of understanding two oceanographic phenomena: separation of the Gulf Stream from the North American coastline at Cape Hatteras...
Antarctic Intermediate Water Mass Formation in Ocean General Circulation Models
Antarctic Intermediate Water Mass Formation Ocean General Circulation Models
2008/7/25
Antarctic Intermediate Water is formed at the high midlatitudes of the Southern Ocean. In many ocean general circulation model simulations with coarse resolution and a z coordinate, a middepth salinit...
Antarctic Bottom Water Flow through the Hunter Channel
Antarctic Bottom Water Flow Hunter Channel
2008/7/23
The Rio Grande Rise acts as a natural barrier for the equatorward flow of Antarctic Bottom Water in the subtropical South Atlantic. In addition to the Vema Channel, the Hunter Channel cuts through thi...
Eddy Variability and Energetics from Direct Current Measurements in the Antarctic Circumpolar Current South of Australia
Eddy Variability Energetics Direct Current Measurements Antarctic Circumpolar Current South of Australia
2008/7/4
Two-year time series measurements of current velocity and temperature in the Subantarctic Front (SAF) south of Australia from 1993 to 1995 provide estimates of eddy fluxes of heat and momentum across ...
Antarctic Bottom Water Formation and Deep-Water Chlorofluorocarbon Distributions in a Global Ocean Climate Model
Antarctic Bottom Water Deep-Water Chlorofluorocarbon Distributions Global Ocean
2008/6/9
The ocean distributions of chlorofluorocarbons (CFCs) have been measured extensively in order to determine the mechanisms, rates, and pathways associated with thermohaline deep-water formation. Model ...
The Antarctic Circumpolar Current between the Falkland Islands and South Georgia
The Antarctic Circumpolar Current Falkland Islands South Georgia
2008/6/9
Hydrographic and lowered acoustic Doppler current profiler data along a line from the Falkland Islands to South Georgia via the Maurice Ewing Bank are used to estimate the flow of circumpolar water in...
A Pulsation Mode in the Antarctic Circumpolar Current South of Australia
A Pulsation Mode Antarctic Circumpolar Current South of Australia
2008/6/6
A streamfunction EOF method is developed to identify long-term thermohaline variations within a strong baroclinic current. The temporal variability associated with meandering fronts and mesoscale eddi...
Vitamin B12 and cobalt cycling among diatoms and bacteria in Antarctic sea ice microbial communities
Vitamin B12 cobalt cycling among diatoms
2014/4/21
Within McMurdo Sound’s annual sea ice, assimilation and concentrations of vitamin B12 (cobalamin),
microbial community productivity, and biomass were examined among three 100-m2
quadrats where light...
Simulated light regimes affect feeding and metabolism of Antarctic krill, Euphausia superba
light regimes affect feeding metabolism of Antarctic krill Euphausia superba
2014/4/22
The effect of different light regimes on physiological parameters (feeding activity, oxygen consumption, and activity of the metabolic enzyme malate dehydrogenase [MDH]) of Antarctic krill, Euphausia ...
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice
Biogas dynamics in spring Antarctic fast ice
2014/4/22
We studied the temporal variations of CO2, O2, and dimethylsulfide (DMS) concentrations within three environments (sea-ice brine, platelet ice-like layer, and underlying water) in the coastal area of ...
Protozoans as a food source for Antarctic krill, Euphausia superba: Complementary insights from stomach content, fatty acids, and stable isotopes
Protozoans a food source Antarctic krill Euphausia superba Complementary insights stomach content fatty acids stable isotopes
2014/5/5
We studied the diet of Antarctic krill, Euphausia superba, at five stations across the southwest Atlantic sector in summer 2003 by analyzing stomach content, fatty acids, and stable isotopes on the sa...
Photoacclimation modulates excessive photosynthetically active and ultraviolet radiation effects in a temperate and an Antarctic marine diatom
Photoacclimation modulates excessive photosynthetically active ultraviolet radiation effects temperate and an Antarctic marine diatom
2014/5/4
The influence of photoacclimation on the effects of excessive photosynthetically active (PAR; 400-700 nm) and ultraviolet (UVR; 280-400 nm) radiation was assessed for the marine diatoms Thalassiosira ...