FN Archimer Export Format
PT J
TI Interocean exchanges and the spreading of Antarctic Intermediate Water south of Africa
BT 
AF RUSCIANO, Emanuela
   SPEICH, Sabrina
   OLLITRAULT, Michel
AS 1:1;2:2;3:1;
FF 1:PDG-ODE-LPO;2:;3:PDG-ODE-LPO;
C1 IFREMER, Ctr Brest, CNRS IRD UBO, Lab Phys Oceans, F-29280 Plouzane, France.
   CNRS IFREMER IRD UBO, UBO UFR Sci & Tech, Lab Phys Oceans, Brest, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-ODE-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.17
TC 19
UR https://archimer.ifremer.fr/doc/00106/21719/19298.pdf
LA English
DT Article
CR MD 166 / BONUS-GOODHOPE
BO Marion Dufresne
AB Argo hydrographic profiles collected from 2004 to 2011 in the southeast Atlantic sector of the Southern Ocean are used in combination with hydrographic transects to describe the characteristics of Antarctic Intermediate Water (AAIW) in the region. Making use of the recently developed ANDRO velocity data set, we estimate the evolution of the dynamical properties of different AAIW varieties along their pathways within the isoneutral layer (27.1 < gamma(n) < 27.6). Three different regional varieties of intermediate water converge in the southeast Atlantic: Atlantic AAIW (A-AAIW, characterized by S <= 34.2), Indian AAIW (I-AAIW, S >= 34.3), and a previously unknown variety that we named Indo-Atlantic intermediate water (IA-AAIW, 34.2 < S < 34.3). South of Africa, the I-AAIW flowing within the Agulhas Current separates into two branches. One branch retroflects following the Agulhas Return Current (13.4 Sv) and proceeds back to the Indian Ocean. The other one separates from the Agulhas Current, and flows into the southeast Atlantic via the Cape Basin within mesoscale eddies (13.5 Sv). A-AAIW enters the domain between the Subtropical Front and the Subantarctic Front (36 Sv). Part of this water (28 Sv) flows eastward into the Indian Ocean, while 10 Sv are injected into the Cape Basin and mix with I-AAIW giving rise to the new IA-AAIW variety. The latter separates into two branches, both transporting 7.4 Sv. One flows northwestward and subducts along the Northern Subtropical Front, while the other moves eastward to contribute a sizable volume of fresh and oxygenated water to the Indian Ocean.
PY 2012
PD OCT
SO Journal Of Geophysical Research-oceans
SN 0148-0227
PU Amer Geophysical Union
VL 117
IS C10010
UT 000309831600001
BP 1
EP 21
DI 10.1029/2012JC008266
ID 21719
ER

EF