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Wave spectral shapes in the coastal waters based on measured data off Karwar on the Western coast of India

DRS at CSIR-National Institute of Oceanography

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Title Wave spectral shapes in the coastal waters based on measured data off Karwar on the Western coast of India
 
Creator Nair, M.A.
SanilKumar, V.
 
Description An understanding of the wave spectral shapes is of primary importance for the design of marine facilities. In this paper, the wave spectra collected from January 2011 to December 2015 in the coastal waters of the eastern Arabian Sea using the moored directional waverider buoy are examined to determine the temporal variations in the wave spectral shape. Over an annual cycle for 31.15 % of the time, the peak frequency is between 0.08 and 0.10 Hz; the significant wave height is also relatively high (~1.55 m) for waves in this class. The slope of the high-frequency tail of the monthly average wave spectra is high during the Indian summer monsoon period (June-September) compared to other months, and it increases with an increase in significant wave height. There is not much interannual variation in the slope for swell-dominated spectra during the monsoon, while in the non-monsoon period when wind-seas have a high level of influence, the slope varies significantly. Since the exponent of the high-frequency part of the wave spectrum is within the range of -4 to -3 during the monsoon period, the Donelan spectrum shows a better fit for the high-frequency part of the wave spectra in monsoon months compared to other months.
 
Date 2017-05-05T09:29:01Z
2017-09-30T03:12:39Z
2017-05-05T09:29:01Z
2017-09-30T03:12:39Z
2017
 
Type Journal Article
 
Identifier Ocean Science, vol.13; 2017; 365-378
1812-0784
http://drs.nio.org/drs/handle/2264/7698
 
Language en
 
Relation Ocean Sci
SCI
 
Publisher European Geosciences Unio