OJMS  Vol.2 No.2 , April 2012
Variations in Swells along Eastern Arabian Sea during the Summer Monsoon
Abstract: A study was carried out to find the variation in wave characteristics along the eastern Arabian Sea and the influence of swells in the nearshore waves at 3 locations during summer monsoon in 2010. Percentage of swells in the measured waves was 75% to 79% at the locations with higher percentage of swells in the northern portion of Arabian Sea com-pared to that at the southern side. The significant wave height up to 4.7 m and maximum wave height up to 7.4 m was observed. The wave height was increasing from south to north with the average significant wave height at the northern location 20% more than that at the southern location due to the increase in the swell height. Waves having spectral peak period less than 6 s were not present during the summer monsoon period. There was no change in the average value of wave statistical parameters for data collected at 1/2, 3, 6, 12 and 24 h interval.
Cite this paper: G. Johnson, V. Kumar, S. Chempalayil, J. Singh, P. Pednekar, K. Kumar, G. Dora and R. Gowthaman, "Variations in Swells along Eastern Arabian Sea during the Summer Monsoon," Open Journal of Marine Science, Vol. 2 No. 2, 2012, pp. 43-50. doi: 10.4236/ojms.2012.22006.

[1]   V. S. Kumar, N. M. Anand, K. A. Kumar and S. Mandal, “Mul-tipeakedness and Groupiness of Shallow Water Waves along Indian Coast,” Journal of Coastal Research, Vol. 19, No. 4, 2003, pp. 1052-1065.

[2]   V. S. Kumar, S. Philip and T. N. B. Nair, “Waves in Shallow Water off West Coast of India during the Onset of Summer Monsoon,” Annales Geophysicae, Vol. 28, 2010, pp. 817-824. doi:10.5194/angeo-28-817-2010

[3]   V. S. Kumar, J. Singh, P. Pednekar and R. Gowthaman, “Waves in the Nearshore Waters of Northern Arabian Sea during the Summer Monsoon,” Ocean Engineering, Vol. 38, No. 2-3, 2011, pp. 382-388. doi:10.1016/j.oceaneng.2010.11.009

[4]   V. S. Kumar, K. C. Pathak, P. Pednekar and R. Gowthaman, “Coastal Processes along the Indian Coastline,” Current Science India, Vol. 91, No. 4, 2006, pp. 530-536.

[5]   F. B. Stephen and T. Kollstad, “Field Trials of the Directional Waverider,” Proceedings of the 1st International Offshore and Polar Engineering Conference, Edinburgh, 11-16 August 1991, pp. 55-63.

[6]   M. S. Longuet-Higgins, “On the Joint Distribution of the Periods and Amplitudes of Sea Waves,” Journal of Geophysical Research, Vol. 80, No. 18, 1975, pp. 2688-2694. doi:10.1029/JC080i018p02688

[7]   A. J. Kuik, G. Vledder and L. H. Holthuijsen, “A Method for the Routine Analysis of Pitch and Roll Buoy Wave Data,” Journal of Physical Ocean-ography, Vol. 18, No. 7, 1988, pp. 1020-1034. doi:10.1175/1520-0485(1988)018<1020:AMFTRA>2.0.CO;2

[8]   J. Portilla, F. J. Ocampo-Torres and J. Monbaliu, “Spectral Partitioning and Identification of Wind Sea and Swell,” Journal of Atmospheric and Oceanic Technology, Vol. 26, No. 1, 2009, pp. 117-122. doi:10.1175/2008JTECHO609.1

[9]   M. A. Donelan, “The Effect of Swell on the Growth of Wind Waves,” Johns Hopkins APL Technical Digest, Vol. 8, No. 1, 1987, pp. 18-23.

[10]   P. D. Bromirski, D. R. Cayan and R. E. Flick, “Wave Spectral Energy Variability in the Northeast Pacific,” Journal of Geophysical Research, Vol. 110, 2005, Article ID: C03005. doi:10.1029/2004JC002398

[11]   Y. Goda, “On the Methodology of Selecting Design Wave Height,” Proceedings 21st Coastal Engineering Conference, ASCE, New York, 20-25 June 1988, pp. 899- 913.

[12]   M. Allen and J. Callaghan, “Extreme Wave Conditions for the South Queensland Coastal Region,” Environment Technical Report, Environmental Protec-tion Agency, Queensland, Vol. 32, 1999, pp. 1-7.