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Superimposition of wind seas on pre-existing swells off Goa coast

DRS at CSIR-National Institute of Oceanography

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Title Superimposition of wind seas on pre-existing swells off Goa coast
 
Creator Vethamony, P.
Aboobacker, V.M.
Menon, H.B.
AshokKumar, K.
Cavaleri, L.
 
Subject Wind waves
Wave spectra
Diurnal variations
Sea breeze
 
Description An analysis of wind and wave data collected in the coastal region of Goa, west coast of India, during fair weather season reveals a distinct and systematic diurnal variation in wind speed, wave height and wave period, especially simultaneous increase in wave height and decrease in wave period with increase in local wind speeds due to sea breeze system. During a typical daily cycle, the wave height reaches its peak early in the afternoon, then it decays progressively back to the swell conditions within 5 or 6 h. Measured wave spectra distinctly bring out salient features of deep water swell and wind seas generated by the local sea breeze. Numerical simulations reproduce the characteristics of this daily cycle. The exposure of Goa coast to long distant swells from the southwest and to the local wind seas from the northwest leads to complex cross-sea conditions
 
Date 2011-04-29T09:47:34Z
2011-04-29T09:47:34Z
2011
 
Type Journal Article
 
Identifier Journal of Marine Systems, vol.87(1); 2011; 47-54
no
http://drs.nio.org/drs/handle/2264/3843
 
Language en
 
Relation J_Mar_Syst_87_47.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2011] Elsevier
 
Publisher Elsevier