Wave-induced nearshore circulation along the Calangute-Candolim beach,Goa, west coast of India |
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| Authors: | V Krishna Kumar C S Murty A K Heblekar |
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| Institution: | 1. National Institute of Oceanography, Dona Paula, 403 004, Goa, India
2. P E S College of Arts and Science, Ponda, 403 405, Goa, India
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| Abstract: | The wave-induced nearshore circulation model suggested by Noda has been modified and applied for three small segments along
the coast of Goa. The present model incorporates the prevailing bottom topography and considers its variation along with the
radiation stress as the driving force for the circulation. We find that the flow pattern is strongly dependent on bottom topography.
While normal incidence of waves results in a cellular pattern of flow, meandering flows prevail for oblique incidence along
the coast. The shoreward flows are always located over shoals while the rip currents prevail over channels. The onshore/offshore
flows show magnitudes as high as 3·1 m/s, while those alongshore reach a maximum of 1·1 m/s. When compared with field observations
these values are slightly higher. |
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| Keywords: | Nearshore circulation radiation stress stream function rip current Calangute-Candolim beach |
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