• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Temperature oscillations in the upper thermocline region- A case study on internal waves off Kalpeni Island in the southern Arabian Sea

    Thumbnail
    View/Open
    Indian_J_Mar_Sci_23_14.pdf (532.6Kb)
    Date
    1994
    Author
    Charyulu, R.J.K.
    Sarma, Y.V.B.
    Sarma, M.S.S.
    Rao, L.V.G.
    Metadata
    Show full item record
    Abstract
    Temperature data were collected for 12 h in the thermocline region at an oceanic station off Kalpeni Island (11~'15'N and 69'E) from the stationary ship using a thermistor chain. These data were Fast Fourier Transformed (FFT) to examine the spectral characteristics of the temperature oscillations. The power spectra of temperature fluctuations at 11 depths in the upper thermocline from 80 to 100 m with 2 m interval, were computed for studying the short period internal waves. Power spectra density was higher at 90 m at all frequencies compared to that at above or below this depth. An abrupt change in the degree of coherence occured at 88 m depth, in the sense that the oscillations above 88 m showed very low degree of coherence, while below 88 m depth the oscillations show very high degree of coherence. The low frequency oscillations (0.01667 to 0.2167 cpm) had higher coherence and very small phase shift whereas, high frequency oscillations (> 0.2167 cpm) had rather poor coherence and a large phase difference. Analysis of the coherence relations of the power spectral densities showed that the internal waves of periods longer than 10 min had higher coherence below 88 m depth
    URI
    http://drs.nio.org/drs/handle/2264/7447
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV