Transport in an idealized three-gyre system with application to the Adriatic Sea
MetadataShow full item record
Motivated by observations of surface drifters in the Adriatic Sea, transport in a three-gyre system is studied with the aid of dynamical systems techniques. Particular attention is paid to the issue of intergyre transport. The velocity field is assumed to be two-dimensional and incompressible and composed of a steady three-gyre background flow on which a time-dependent perturbation is superimposed. Two systems of this type are considered: 1) an observationally motivated, analytically prescribed model consisting of a steady background on which a multiperiodic time-dependent perturbation is superimposed, and 2) an observationally based model of the Adriatic Sea consisting of the mean surface circulation derived from surface drifter trajectories on which a time-dependent altimetry-based perturbation velocity field is superimposed. It is shown that for a small perturbation to the steady three-gyre background, two of the gyres exchange no fluid with the third gyre. When the perturbation strength exceeds a certain threshold, transport between all three gyres occurs. This behavior is described theoretically, illustrated using the analytic model and shown to be consistent with the observationally based model of the Adriatic. The relevance of the work presented to more complicated multiple-gyre problems is discussed.
Author Posting. © American Meteorological Society, 2009. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 39 (2009): 675-690, doi:10.1175/2008JPO3975.1.
Suggested CitationJournal of Physical Oceanography 39 (2009): 675-690
Showing items related by title, author, creator and subject.
Near-surface transport pathways in the north Atlantic Ocean : looking for throughput from the subtropical to the subpolar gyre Rypina, Irina I.; Pratt, Lawrence J.; Lozier, M. Susan (American Meteorological Society, 2011-05)Motivated by discrepancies between Eulerian transport estimates and the behavior of Lagrangian surface drifters, near-surface transport pathways and processes in the North Atlantic are studied using a combination of data, ...
Frajka-Williams, Eleanor; Ansorge, Isabelle; Baehr, Johanna; Bryden, Harry L.; Chidichimo, Maria Paz; Cunningham, Stuart A.; Danabasoglu, Gokhan; Dong, Shenfu; Donohue, Kathleen A.; Elipot, Shane; Heimbach, Patrick; Holliday, Naomi P.; Hummels, Rebecca; Jackson, Laura C.; Karstensen, Johannes; Lankhorst, Matthias; Le Bras, Isabela A.; Lozier, M. Susan; McDonagh, Elaine L.; Meinen, Christopher S.; Mercier, Herlé; Moat, Bengamin I.; Perez, Renellys; Piecuch, Christopher G.; Rhein, Monika; Srokosz, Meric; Trenberth, Kevin E.; Bacon, Sheldon; Forget, Gael; Goni, Gustavo J.; Kieke, Dagmar; Koelling, Jannes; Lamont, Tarron; McCarthy, Gerard D.; Mertens, Christian; Send, Uwe; Smeed, David A.; Speich, Sabrina; van den Berg, Marcel; Volkov, Denis L.; Wilson, Chris (Frontiers Media, 2019-06-07)The Atlantic Meridional Overturning Circulation (AMOC) extends from the Southern Ocean to the northern North Atlantic, transporting heat northwards throughout the South and North Atlantic, and sinking carbon and nutrients ...
Kamenkovich, Igor V.; Rypina, Irina I.; Berloff, Pavel S. (American Meteorological Society, 2015-03)This study examines anisotropic transport properties of the eddying North Atlantic flow, using an idealized model of the double-gyre oceanic circulation and altimetry-derived velocities. The material transport by the ...