scholarly journals The Antarctic Circumpolar Current isolates and connects: Structured circumpolarity in the sea star Glabraster antarctica

2018 ◽  
Vol 8 (21) ◽  
pp. 10621-10633 ◽  
Author(s):  
Jenna M. Moore ◽  
Jose I. Carvajal ◽  
Greg W. Rouse ◽  
Nerida G. Wilson
Keyword(s):  
Antarctic Circumpolar Current ◽  
Sea Star ◽  
Circumpolar Current ◽  
The Antarctic

scholarly journals Nonlinear Differential Equations Modeling the Antarctic Circumpolar Current

2021 ◽  
Vol 23 (4) ◽  
Author(s):  
Jifeng Chu ◽  
Kateryna Marynets
Keyword(s):  
Fixed Point ◽  
Differential Equations ◽  
Boundary Conditions ◽  
Topological Degree ◽  
Antarctic Circumpolar Current ◽  
Fixed Point Theorems ◽  
Nonlinear Differential Equations ◽  
Existence Results ◽  
Circumpolar Current ◽  
The Antarctic

AbstractThe aim of this paper is to study one class of nonlinear differential equations, which model the Antarctic circumpolar current. We prove the existence results for such equations related to the geophysical relevant boundary conditions. First, based on the weighted eigenvalues and the theory of topological degree, we study the semilinear case. Secondly, the existence results for the sublinear and superlinear cases are proved by fixed point theorems.

scholarly journals Distinct Oceanic Microbiomes From Viruses to Protists Located Near the Antarctic Circumpolar Current

2018 ◽  
Vol 9 ◽  
Author(s):  
Flavia Flaviani ◽  
Declan C. Schroeder ◽  
Karen Lebret ◽  
Cecilia Balestreri ◽  
Andrea C. Highfield ◽  
...  
Keyword(s):  
Antarctic Circumpolar Current ◽  
Circumpolar Current ◽  
The Antarctic

scholarly journals The Antarctic Circumpolar Current as a diversification trigger for deep-sea octocorals

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Luisa F. Dueñas ◽  
Dianne M. Tracey ◽  
Andrew J. Crawford ◽  
Thomas Wilke ◽  
Phil Alderslade ◽  
...  
Keyword(s):  
Deep Sea ◽  
Antarctic Circumpolar Current ◽  
Circumpolar Current ◽  
The Antarctic

Eddy-induced carbon transport across the Antarctic Circumpolar Current

2017 ◽  
Vol 31 (9) ◽  
pp. 1368-1386 ◽  
Author(s):  
Sébastien Moreau ◽  
Alice Della Penna ◽  
Joan Llort ◽  
Ramkrushnbhai Patel ◽  
Clothilde Langlais ◽  
...  
Keyword(s):  
Antarctic Circumpolar Current ◽  
Circumpolar Current ◽  
The Antarctic ◽  
Carbon Transport

scholarly journals Intrinsic variability of the Antarctic Circumpolar Current system: low- and high-frequency fluctuations of the Argentine Basin flow

Ocean Science ◽  
2014 ◽  
Vol 10 (2) ◽  
pp. 201-213 ◽  
Author(s):  
G. Sgubin ◽  
S. Pierini ◽  
H. A. Dijkstra
Keyword(s):  
High Frequency ◽  
Antarctic Circumpolar Current ◽  
Current System ◽  
Low Frequency ◽  
Drake Passage ◽  
Ocean Model ◽  
Intrinsic Variability ◽  
Circumpolar Current ◽  
The Antarctic ◽  
Argentine Basin

Abstract. In this paper, the variability of the Antarctic Circumpolar Current system produced by purely intrinsic nonlinear oceanic mechanisms is studied through a sigma-coordinate ocean model, implemented in a large portion of the Southern Ocean at an eddy-permitting resolution under steady surface heat and momentum fluxes. The mean transport through the Drake Passage and the structure of the main Antarctic Circumpolar Current fronts are well reproduced by the model. Intrinsic variability is found to be particularly intense in the Subantarctic Front and in the Argentine Basin, on which further analysis is focused. The low-frequency variability at interannual timescales is related to bimodal behavior of the Zapiola Anticyclone, with transitions between a strong and collapsed anticyclonic circulation in substantial agreement with altimeter observations. Variability on smaller timescales shows clear evidence of topographic Rossby-wave propagation along the eastern and southern flanks of the Zapiola Rise and of mesoscale eddies, also in agreement with altimeter observations. The analysis of the relationship between the low- and high-frequency variability suggests possible mechanisms of mutual interaction.

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