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Inertial currents in the Indian Ocean derived from satellite tracked surface drifters

DRS at CSIR-National Institute of Oceanography

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Title Inertial currents in the Indian Ocean derived from satellite tracked surface drifters
 
Creator Saji, P.K.
Shenoi, S.S.C.
Almeida, A.M.
Rao, L.V.G.
 
Subject inertial currents
surface drifters
satellite sensing
drifting data buoys
 
Description Satellite-tracked surface drifters were used to analyze the characteristics of inertial currents in the tropical Indian Ocean. The drifters were drogued at 15 m depth and had wind-produced slips less than 0.1% of the wind speed. The rotary spectra of surface velocity components indicated the significance of intertial currents. They are circular (rotary coefficient greater than 0.5), highly intermittent and contribute up to 46% to the total kinetic energy of the surface flow field. Events of intertial activity, either triggered by the passage of atmospheric disturbances or by the local fluctuations in the atmospheric pressure (winds), did not last for more than 4 to 5 intertial cycles. The observed intertial frequency exhibited a shift towards the red end of the spectrum by 12%. Cyclonic storm induced inertial events even at a location 300 km away from it
 
Date 2009-01-09T09:19:50Z
2009-01-09T09:19:50Z
2000
 
Type Journal Article
 
Identifier Oceanologica Acta, Vol.23; 635-640p.
http://drs.nio.org/drs/handle/2264/1708
 
Language en
 
Rights Copyright [2000]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Ifremer/ CNRS/ IRD/ Editions scientifiques et medicales Elsevier SAS. Tous droits reserves