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dc.contributor.advisorPaduan, Jeffrey D.
dc.contributor.authorBrown, John E. M.
dc.dateDecember 1995
dc.date.accessioned2012-07-31T19:52:39Z
dc.date.available2012-07-31T19:52:39Z
dc.date.issued1995-12
dc.identifier.urihttp://hdl.handle.net/10945/7444
dc.description.abstractSurface velocity observations from the Canary Basin of the northeast Atlantic Ocean are studied with emphasis on the region of the Azores Current. Data are based on trajectories of 155 WOCE-standard Lagrangian surface drifters drogued at 15 m depth. Over 52,000 daily velocity estimates are available for the region 45 deg W, 25 deg N and 5 deg W, 45 deg N for July 1991 through March 1995. A clear view of the mean Azores Current emerges around 34 deg N with average speeds of approx. 10 cm/s and eddy kinetic energy approx. 181/sq cm/s2. The Current moves eastward beyond Madeira Island to join the southwestward flowing Canary Current. Part of the flow bifurcates west of the Madeira Plateau around 23 deg W. Eddy kinetic energy in the Canary Current region is only approx. 80/sq cm/s2 even though mean speeds are similar to those in the Azores Current. Zonal averages of the flow show significant convergence in the meridional velocity north of the Azores Front. A time history of the frontal locations is developed based on SST and drifter information. A methodology is presented for converting drifter observations into along-front and cross-front coordinates. Although these frontal locations do not faithfully track the location of the main subsurface front, particularly in the eastern portion of the domain, mean velocities in frontal coordinates support the hypothesis that large-scale subduction of surface waters in this region is concentrated in a region of convergence associated with the Azores Front, particularly from the north.en_US
dc.description.urihttp://archive.org/details/drifterbasedvelo109457444
dc.format.extent152 p.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleDrifter-based velocity statistics in the vicinity of the Azores Fronten_US
dc.typeThesisen_US
dc.contributor.departmentMeteorology and Physical Oceanography
dc.description.serviceU.S. Navy (U.S.N.) author.en_US
etd.thesisdegree.nameM.S. in Meteorology and Physical Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMeteorology and Physical Oceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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