FN Archimer Export Format
PT J
TI Surface currents and upwelling in Kerguelen Plateau regions
BT 
AF Zhou, M.
   Zhu, Y.
   d'Ovidio, F.
   Park, Y.-H.
   Durand, I.
   Kestenare, E.
   Sanial, V.
   Van-Beek, P.
   Queguiner, B.
   Carlotti, F.
   Blain, S.
AS 1:1,4;2:1;3:2;4:2;5:2;6:3;7:3;8:3;9:4;10:4;11:5;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 University of Massachusetts Boston, Boston, MA 02125
   LOCEAN-IPSL (CNRS/UPMC/MNHN/IRD), Paris, France
   LEGOS (CNRS/UPS/CNES/IRD), Toulouse, France
   MIO (AMU/STVU/CNRS/IRD), Marseille, France
   LOMIC (CNRS/UPMC), Banyuls-sur-Mer, France
C2 UNIV MASSACHUSETTS BOSTON, USA
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
   CNRS, FRANCE
   CNRS, FRANCE
IN DOAJ
TC 0
UR https://archimer.ifremer.fr/doc/00295/40621/39568.pdf
LA English
DT Article
CR MD 145 / KEOPS
   MD 188 / KEOPS 2
BO Marion Dufresne
AB Mean currents, horizontal diffusivity and upwelling on the Kerguelen Plateau and the deep basin east of the Kerguelen Islands were studied using 48 World Ocean Circulation Experiment (WOCE) Standard Surface Velocity Program (SVP) drifters deployed during the 2011 austral spring KEOPS II (KErguelen Ocean Plateau compared Study II) cruise. These drifter data were analyzed based on autocovariances for temporal scales, least-squares fitted streamfunctions for estimating mesoscale mean currents, wind stress fields and Ekman pumping, and Taylor's single particle diffusivity for estimating horizontal dispersion of surface waters. The results have revealed the shelfbreak current on the southern and eastern shelf slopes of the Kerguelen Islands, transport of surface waters from the Kerguelen–Heard shelf basin crossing the shelf slope into the deep basin off the plateau east of the Kerguelen Islands, and upwelling driven by wind stress curl in both the plateau and deep basin regions. The estimated volume transports off the Plateau in the upper 50 m based on surface drifters and below the mixed layer based on wind stress curl are 0.5 and 1.7 Sv, respectively, the mean and standard deviation of vertical velocities driven by wind stress curl averaged in the plateau and deep basin regions up to 3.2 ± 7.4 m d−1, and the upwelling fluxes in the surveyed plateau and deep basin regions are approximately 0.7 and 1.1 Sv, respectively. These physical transport processes can have significant effects on balances between biogeochemical elements and their recycling processes.
PY 2014
PD MAY
SO Biogeosciences Discussions
SN 1810-6285
PU Copernicus GmbH
VL 11
IS 5
BP 6845
EP 6876
DI 10.5194/bgd-11-6845-2014
ID 40621
ER

EF