FN Archimer Export Format
PT J
TI Multiple jets of the Antarctic circumpolar current South of Australia
BT 
AF SOKOLOV, Serguei
   RINTOUL, Stephen R.
AS 1:1,2;2:1,2;
FF 1:;2:;
C1 CSIRO Marine & Atmospher Res, Hobart, Tas 7001, Australia.
   Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas 7001, Australia.
C2 CSIRO, AUSTRALIA
   ACE CRC, AUSTRALIA
IF 2.185
TC 166
UR https://archimer.ifremer.fr/doc/00235/34616/32952.pdf
LA English
DT Article
CR SURVOSTRAL 2000/2001
   SURVOSTRAL 2001/2002
   SURVOSTRAL 2002/2003
   SURVOSTRAL 2003/2004
   SURVOSTRAL 2004/2005
   SURVOSTRAL 2005/2006
   SURVOSTRAL 92
   SURVOSTRAL 93
   SURVOSTRAL 94
   SURVOSTRAL 95
   SURVOSTRAL 96
   SURVOSTRAL 97
   SURVOSTRAL 98
   SURVOSTRAL 99
BO L'Astrolabe
DE ;jets;currents;sea surface temperature;ocean circulation
AB Maps of the gradient of sea surface height (SSH) and sea surface temperature (SST) reveal that the Antarctic Circumpolar Current (ACC) consists of multiple jets or frontal filaments. The braided and patchy nature of the gradient fields seems at odds with the traditional view, derived from hydrographic sections, that the ACC is made up of three continuous circumpolar fronts. By applying a nonlinear fitting procedure to 638 weekly maps of SSH gradient (del SSH), it is shown that the distribution of maxima in del SSH (i.e., fronts) is strongly peaked at particular values of absolute SSH (i.e., streamlines). The association between the jets and particular streamlines persists despite strong topographic and eddy - mean flow interactions, which cause the jets to merge, diverge, and fluctuate in intensity along their path. The SSH values corresponding to each frontal branch are nearly constant over the sector of the Southern Ocean between 100 degrees E and 180 degrees. The front positions inferred from SSH agree closely with positions inferred from hydrographic sections using traditional water mass criteria. Recognition of the multiple branches of the Southern Ocean fronts helps to reconcile differences between front locations determined by previous studies. Weekly maps of SSH are used to characterize the structure and variability of the ACC fronts and filaments. The path, width, and intensity of the frontal branches are influenced strongly by the bathymetry. The "meander envelopes" of the fronts are narrow on the northern slope of topographic ridges, where the sloping topography reinforces the beta effect, and broader over abyssal plains.
PY 2007
PD MAY
SO Journal Of Physical Oceanography
SN 0022-3670
PU Amer Meteorological Soc
VL 37
IS 5
UT 000246804900019
BP 1394
EP 1412
DI 10.1175/JPO3111.1
ID 34616
ER

EF