FN Archimer Export Format PT J TI Detection of coherent oceanic structures via transfer operators BT AF FROYLAND, G PADBERG, K ENGLAND, M TREGUIER, Anne-Marie AS 1:1;2:2;3:1;4:3; FF 1:;2:;3:;4:; C1 Univ New S Wales, Sch Math & Stat, Sydney, NSW 2052, Australia. Univ Paderborn, Fak Elektortech Informat & Math, D-33095 Paderborn, Germany. IFREMER, CNRS, F-29280 Plouzane, France. C2 UNIV NEW S WALES, AUSTRALIA UNIV PADERBORN, GERMANY IFREMER, FRANCE SI BREST SE PDG-DOP-DCB-OPS-LPO IN WOS Ifremer jusqu'en 2018 copubli-europe copubli-int-hors-europe IF 6.944 TC 97 UR https://archimer.ifremer.fr/doc/2007/publication-4349.pdf LA English DT Article AB Coherent nondispersive structures are known to play a crucial role in explaining transport in nonautonomous dynamical systems such as ocean flows. These structures are difficult to extract from model output as they are Lagrangian by nature and not revealed by the underlying Eulerian velocity fields. In the last few years heuristic concepts such as finite-time Lyapunov exponents have been used in an attempt to detect barriers to oceanic transport and thus identify regions that trap material such as nutrients and phytoplankton. In this Letter we pursue a novel, more direct approach to uncover coherent regions in the surface ocean using high-resolution model velocity data. Our method is based upon numerically constructing a transfer operator that controls the surface transport of particles over a short period. We apply our technique to the polar latitudes of the Southern Ocean. PY 2007 PD JUL SO Physical Review Letters SN 0031-9007 PU The American Physical Society VL 98 IS 22 UT 000246910100030 DI 10.1103/PhysRevLett.98.224503 ID 4349 ER EF