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dc.contributor.authorMandal, S.
dc.contributor.authorShanas, P.R.
dc.contributor.authorYuvaraj, S.
dc.contributor.authorJoseph, D.
dc.contributor.authorAravind, P.
dc.contributor.authorGeorge, J.
dc.contributor.authorSingh, J.
dc.contributor.authorSanilKumar, V.
dc.date.accessioned2023-12-10
dc.date.accessioned2023-12-10T13:28:26Z
dc.date.available2023-08-13
dc.date.available2023-12-10T13:28:26Z
dc.date.issued2023
dc.identifier.citationRegional Studies in Marine Science, vol.66; 2023; Article no: 103124
dc.identifier.issn2352-4855
dc.identifier.otherhttps://www.sciencedirect.com/science/article/pii/S2352485523003146
dc.identifier.urihttps://doi.org/10.1016/J.RSMA.2023.103124
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9109
dc.descriptionIF(JCR2023) = 2.1
dc.description.abstractDetermining tidal reach and long-term monitoring of tidal discharge are vital in an estuarine system due to their potential use in water resource management and inland navigation. The upstream river discharge contributes to the nonstationary and nonlinear features of estuarine discharge. The tidal reach of an estuary can be identified based on the tidal influence on its water stage components. In the present study, a novel approach based on the Hilbert-Huang transform (HHT) and complete ensemble empirical mode decomposition with adaptive noise (CEEMDN), is used to decompose water stages into several Intrinsic mode functions (IMF). Those IMFs with different amplitudes and periodicities represent those factors that influence the water stages in an estuary. The efficiency of the present method is analyzed with the measured water level data from the estuary of Mandovi-Zuari in Goa, India. Principal ocean lunar semidiurnal constituent M2 is found to be the major tidal constituent, which is consistent in the coastal region. Subsequently, the high-frequency discharge is computed and validated with direct discharge measured by Rio Grande Acoustic Doppler Current Profiler (ADCP). Post-monsoonal discharge is computed using pre-monsoonal calibration coefficients, and a strong correlation is found between post-monsoonal measured and computed discharge. The proposed study will be helpful to estimate reliable estuarine tidal discharge with minimum operational maintenance.
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleEvaluating the estuarine tidal discharge through water stage component analysis and in-situ measurement - Case study Mandovi-Zuari estuary of Goa, India
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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