Vertical velocities in the tropical Atlantic observed with autonomous gliders

Krahmann, Gerd, Brandt, Peter and Kanzow, Torsten (2012) Vertical velocities in the tropical Atlantic observed with autonomous gliders [Poster] In: Ocean Sciences Meeting 2012, 20.-24.02.2012, Salt Lake City, USA.

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Abstract

Automous gliders carry not only various sensors through the oceans but can themselves be used as a tool to observe oceanic parameters. The idea is to compare modelled with observed flight characteristics during each of the dives. Assuming quasi-stationary flight, the force balance for the gliders can be calculated and a theoretical vertical velocity of the glider can be deduced. Comparing that with the vertical velocity observed by the glider's pressure sensors, one obtains an estimate of the ambient vertical water velocity. Sixteen glider deployments in the tropical Atlantic each lasting between 3 and 12 weeks have been analyzed for vertical velocities in the water column. Spectra of vertical velocities have been calculated and are investigated for regional and temporal variability.

Document Type: Conference or Workshop Item (Poster)
Keywords: Atlantic Ocean; vertical velocities
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Date Deposited: 27 Nov 2012 12:38
Last Modified: 27 Nov 2012 12:38
URI: http://eprints.uni-kiel.de/id/eprint/19334

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