FN Archimer Export Format
PT J
TI Hetonic quartets in a two-layer quasi-geostrophic flow: V-states and stability
BT 
AF REINAUD, J. N.
   SOKOLOVSKIY, M. A.
   CARTON, Xavier
AS 1:1;2:2,3;3:4;
FF 1:;2:;3:;
C1 Univ St Andrews, Math Inst, St Andrews KY16 9SS, Fife, Scotland.
   Russian Acad Sci, Inst Water Problems, 3 Gubkina St, Moscow 119333, Russia.
   Russian Acad Sci, Shirshov Inst Oceanol, 36 Nahimovskiy Prospekt, Moscow 117997, Russia.
   UBO UBL, IUEM, Lab Oceanog Phys & Spatiale, Technopole Brest Iroise, F-29280 Plouzane, France.
C2 UNIV ST ANDREWS, UK
   RUSSIAN ACAD SCI, RUSSIA
   PP SHIRSHOV OCEANOL INST, RUSSIA
   UBO, FRANCE
UM LOPS
IF 2.627
TC 2
UR https://archimer.ifremer.fr/doc/00600/71246/69617.pdf
LA English
DT Article
AB We investigate families of finite core vortex quartets in mutual equilibrium in a two-layer quasi-geostrophic flow. The finite core solutions stem from known solutions for discrete (singular) vortex quartets. Two vortices lie in the top layer and two vortices lie in the bottom layer. Two vortices have a positive potential vorticity anomaly, while the two others have negative potential vorticity anomaly. The vortex configurations are therefore related to the baroclinic dipoles known in the literature as hetons. Two main branches of solutions exist depending on the arrangement of the vortices: the translating zigzag-shaped hetonic quartets and the rotating zigzag-shaped hetonic quartets. By addressing their linear stability, we show that while the rotating quartets can be unstable over a large range of the parameter space, most translating quartets are stable. This has implications on the longevity of such vortex equilibria in the oceans. 
PY 2018
PD MAY
SO Physics Of Fluids
SN 1070-6631
PU Amer Inst Physics
VL 30
IS 5
UT 000433958400043
DI 10.1063/1.5027181
ID 71246
ER

EF