Ocean Science
Ocean Science
OS
Articles | Volume 13, issue 5
Articles | Volume 13, issue 5
https://doi.org/10.5194/os-13-703-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/os-13-703-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 5
Research article
 | 
15 Sep 2017
Research article |  | 15 Sep 2017

Observation of dominance of swells over wind seas in the coastal waters of the Gulf of Mannar, India

M. M. Amrutha and V. Sanil Kumar

Data sets

RA-Interim is a global atmospheric reanalysis from 1979, continuously updated in real time D. P. Dee, S. M. Uppala, A. J. Simmons, P. Berrisford, P. Poli, S. Kobayashi, U. Andrae, M. A. Balmaseda, G. Balsamo, P. Bauer, P. Bechtold, A. C. M. Beljaars, L. van de Berg, J. Bidlot, N. Bormann, C. Delsol, R. Dragani, M. Fuentes, A. J. Geer, L. Haimberger, S. B. Healy, H. Hersbach, E. V. H\'{o}lm, L. Isaksen, P. K{\aa}llberg, M. K\"{o}hler, M. Matricardi, A. P. McNally, B. M. Monge-Sanz, J.-J. Morcrette, B.-K. Park, C. Peubey, de Rosnay, C. Tavolato, J.-N. Th\'{e}paut, and F. Vitart http://www.ecmwf.int/en/research/climate-reanalysis/era-interim

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Short summary
Waves measured at 12 m in the near-shore waters of the Gulf of Mannar for a 1-year period are used to examine the predominance of wind seas and swells through spectral characterization. The waves of the study region are under the control of sea breeze, with the maximum in the late evening and the minimum in the early morning. A total of 53 % of the surface height variance in the study area results from swells from the southeast and south; the remainder are wind seas from the east and southeast.
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