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dc.contributor.authorAboobacker, V.M.
dc.contributor.authorRashmi, R.
dc.contributor.authorVethamony, P.
dc.contributor.authorMenon, H.B.
dc.date.accessioned2011-09-29T06:30:43Z
dc.date.available2011-09-29T06:30:43Z
dc.date.issued2011
dc.identifier.citationContinental Shelf Research, vol.31; 2011; 1701-1712
dc.identifier.otherno
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3926
dc.description.abstractWave data collected off Goa along the west coast of India during February 1996–May 1997 has been subjected to spectral analysis, and swell and wind sea parameters have been estimated by separation frequency method. Dominance of swells and wind seas on monthly and seasonal basis has been estimated, and the analysis shows that swells dominate Goa coastal region not only during southwest monsoon (93%), but also during the post-monsoon (67%) season. Wind seas are dominant during the pre-monsoon season (51%). The mean wave periods (Tm) during southwest monsoon are generally above 5 s, whereas Tm is below 5 s during other seasons. Co-existence of multiple peaks (from NW and NE) was observed in the locally generated part of the wave spectrum, especially during the post-monsoon season. NCEP reanalysis winds have been used to analyse active fetch available in the Indian Ocean, from where the predominant swells propagate to the west coast of India. A numerical model was set up to simulate waves in the Indian Ocean using flexible mesh bathymetry. The correlation coefficients between measured and modelled significant wave heights and mean wave periods are 0.96 and 0.85, respectively. Numerical simulations reproduced the swell characteristics in the Indian Ocean, and from the model results potential swell generation areas are identified. The characteristics of swells associated with tropical storms that prevail off Goa during 1996 have also been analysed.
dc.language.isoen
dc.publisherElsevier
dc.relation.requiresCont_Shelf_Res_31_1701.jpg
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2011] Elsevier
dc.subjectwave data
dc.subjectspectral analysis
dc.subjectTropical storm
dc.subjectswell
dc.titleOn the dominance of pre-existing swells over wind seas along the west coast of India
dc.typeJournal Article


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