FN Archimer Export Format
PT J
TI Subsurface floats in the Filchner Trough provide first direct under-ice tracks of eddies and circulation on shelf
BT 
AF Sallée, Jean-Baptiste
   Vignes, Lucie
   Minière, Audrey
   Steiger, Nadine
   Pauthenet, Etienne
   Lourenco, Antonio
   Speer, Kevin
   Lazarevich, Peter
   Nicholls, Keith
AS 1:1;2:1;3:2;4:1;5:1,5;6:1;7:3;8:3;9:4;
FF 1:;2:;3:;4:;5:PDG-ODE-LOPS-OH;6:;7:;8:;9:;
C1 Laboratoire d’Océanographie et du Climat, Sorbonne Université / CNRS, Paris, France
   Mercator Ocean International, Université Toulouse III - Paul Sbatier, Toulouse, France
   Geophysical Fluid Dynamics Institute and Department of Scientific Computing, Florida State University, Tallahassee, USA
   British Antarctic Survey, Cambridge, UK
   Univ Brest, Ifremer, CNRS, IRD, LOPS, F-29280 Plouzané, France
C2 UNIV SORBONNE, FRANCE
   MERCATOR OCEAN, FRANCE
   UNIV FLORIDA STATE, USA
   BRITISH ANTARCTIC SURVEY, UK
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LOPS-OH
UM LOPS
TC 0
UR https://archimer.ifremer.fr/doc/00867/97889/106999.pdf
LA English
DT Article
AB Bottom water formation in the Weddell Sea and mass loss from the Filchner-Ronne Ice Shelf are tightly linked by the supply of Warm Deep Water to the continental shelf. Heavy sea ice cover and icebergs restrict ship access and upper ocean measurements by moorings, compelling us to try new sampling methods. We present results from the first dedicated under-sea-ice float experiment tracking circulation on the continental shelf between the Brunt Ice Shelf and Filchner Ice Shelf. Seven Apex profiling floats were deployed in 2017 at three different locations, targeting the sources of modified Warm Deep Water (mWDW) inflow and Ice Shelf Water (ISW) circulation in the Filchner Trough. The floats capture a warm mWDW regime with southward inflow over the eastern continental shelf and a cold ISW regime with a recirculation of ISW in the Filchner Trough throughout the four years of observations. The mWDW flowing onto the continental shelf follows two pathways: the eastern flank of the Filchner Trough and via a Small Trough on the shallow shelf farther east. In the present circulation regime, this warm water is blocked from reaching the ice shelf cavity due to the presence of the thick ISW layer inside the Filchner Trough. The floats' trajectories and hydrography reveal the dynamically active front, flow reversal, and eddy generation between these two water masses along the eastern flank of the Filchner Trough. 
PY 2023
PD DEC
SO Preprint
PU Copernicus GmbH
DI 10.5194/egusphere-2023-2952
ID 97889
ER

EF