Woods Hole Oceanographic Institution

Steven R. Jayne

»Sc.D. Thesis
»Recirculation gyres in a beta-plane jet
»Forcing and sampling of ocean models
»Thermohaline circulation - sea ice feedback
»Recirculation forced by an unstable jet
»Tidal dissipation over rough topography
»Dynamics of ocean heat transport variability
»Deep ocean currents from GRACE
»Estimates of tidally-driven mixing
»Millennial climate variability
»Oceanic eddy heat transport
»Ocean heat content from GRACE
»Tidally-driven mixing in an ocean model
»Ocean bathymetry and Earth's climate
»Bathymetry from space
»Subtropical mode water during KESS
»North Atlantic Ocean circulation from GRACE
»Subtropical mode water in the Kuroshio Extension
»Tidal mixing during the Last Glacial Maximum
»Kuroshio northern recirculation gyre
»Bottom pressure in KESS and GRACE
»Ocean model metrics
»Abyssal mixing in CCSM
»Kuroshio Extension jet and transport
»The Morphology of Steve

S. R. Jayne, N. G. Hogg, S. N. Waterman, L. Rainville, K. A. Donohue, D. R. Watts, K. L. Tracey, J. L. McClean, M. E. Maltrud, B. Qiu, S. Chen, and P. Hacker, The Kuroshio Extension and its recirculation gyres, Deep-Sea Research I, 2009

This paper reports on the strength and structure of recirculation gyres flanking the Kuroshio Extension.  In the time-average, recirculation gyres are found flanking the Kuroshio Extension to the north and south of the jet.  The observations were taken as part of the Kuroshio Extension System Study (KESS) which had a 2 year field program from June 2004 -- June 2006.  All of the combined observations from the KESS program; current meters, current and pressure recording inverted echo sounders, sub-surface floats, in addition to a high-resolution numerical model, support the presence of recirculation gyres to the north and south of the Kuroshio Extension jet. At the location of the KESS array, the Kuroshio Extension jet and its recirculation gyre transport approximately 121 Sv in the stream-coordinate average of the current meters.  This represents an almost three-fold increase in the transport compared to the Kuroshio's transport at Cape Ashizuri before it separates from the coast and flows eastward into the open ocean.  This enhancement in the current's transport comes from the existence of recirculation gyres to the north and south of the jet.  Estimates from an array of inverted echo sounders and a high-resolution ocean general circulation model are of similar magnitude.

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