Balchand, A N; Jossia, Joseph K; Hareeshkumar, P V; Rajesh,G(Current Science, March , 2007)
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Abstract:
Time-series measurements from a moored data buoy
located in the Bay of Bengal captured signals of inertial
oscillation forced by the September 1997 cyclone. The
progressive vector diagram showed mean northeastward
current with well-defined clockwise circulation.
Spectral analysis exhibited inertial peak at 0.67 cpd
with blue shift and high rotary coefficient of –0.99, which
signifies strong circular inertial oscillation. The wind
and SST also exhibited spectral peak at inertial band
(0.69 cpd) with higher blue shift. The inertial amplitude
of 148.8 cm/s corresponding to a wind stress of 0.99 N/m2
and spectral peak near the local inertial frequency
(0.653 cpd) indicate that the transfer of momentum
was high.