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    First results of Indian - Current meter moorings along The equator: Vertical current structure variability at equator, 93 degrees E during February-December, 2000

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    6_PORSEC_Proc_2002_1_25.pdf (789.8Kb)
    Date
    2002
    Author
    Murty, V.S.N.
    Suryanarayana, A.
    Sarma, M.S.S.
    Tilvi, V.
    Fernando, V.
    Nampoothiri, G.
    Sardar, A.A.
    Gracias, D.
    Khalap, S.
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    Abstract
    The first results of time-series current data obtained from 6 levels at equator, 93 degrees E in the eastern equatorial Indian Ocean during February-December 2000 are analyzed. The top RCM was located at 135m. The mean currents at each depth are weak while the low pass filtered (49-hour) current data show considerable meso-scale variability, comprising of Intraseasonal Oscillations (ISO) of period 10-20 day and 40.5 day. The 10-20 day ISO is associated with similar variability in surface wind forcing while the 30-50 day ISO with Madden-Julian Oscillations. The energy spectrum at 280 m shows relatively higher energy than that at 135 m at 10-20 day ISO; while cross-spectra of kinetic energy at these depths reveal high coherence and upward phase propagation at 10-20 day ISO.
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    http://drs.nio.org/drs/handle/2264/1406
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