Observed current variability in Gulf of Mannar
VINEET JAIN P AMOL V FERNANDO G SMICHAEL S G APARNA A KANKONKAR P A TARI M G GAONKAR N P SATELKAR S T KHALAP
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We present current data from an acoustic Doppler current profiler (ADCP) moored on the continental shelf-break in the Gulf of Mannar (GoM) near Ram Setu during 2010–2011. The observations show that the near-surface, sub-inertial current flows primarily north-westward all round the year. This northwestward flow is punctuated by intraseasonal bursts that last a few weeks. Compared to the current off Kanyakumari, the intraseasonal fluctuations in the GoM are weaker and in the opposite direction. The flip in direction is linked to eddy-like circulations, which cause the current to bifurcate or merge in the region between Kanyakumari and Ram Setu.
$\bullet$ Ocean current data collected in Gulf of Mannar.
$\bullet$ Near-surface current is north-westward over most part of the year.
$\bullet$ Current shows intraseasonal variability.
$\bullet$ Intraseasonal variability in the Gulf of Mannar current is weaker and in opposite direction compared to off Kanyakumari current.
$\bullet$ The opposite direction of Gulf of Mannar and off Kanyakumari currents is linked to local changes in the sea level.
VINEET JAIN1 P AMOL2 V FERNANDO1 G SMICHAEL3 S G APARNA1 A KANKONKAR1 P A TARI1 M G GAONKAR1 N P SATELKAR1 S T KHALAP1
Volume 132, 2023
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