I V Ramana Author

Research Article Open Access

OCM Derived Chlorophyll-a Dynamics in the Nearshore Region of the Central West Coast of India: Implications for Fish Catch in the Area

Author(s):

Venkatraman S Hegde*, Shailesh R Nayak, Shalini G, Kanchanagouri D Gosavi, Ajay S Rajawat and I V Ramana

This paper deals with the influence of wind and coastal currents on the distribution and concentration of Chlorophyll-a in the nearshore waters off the northern Karnataka coast (between towns of Karwar and Bhatkal), along the central west coast of India. In general, concentrations of Chlorophyll-a were high (0.6-1.50 mg/l) in this region. High concentrations of Chlorophyll-a in the nearshore waters during the monsoon season were related to local upwelling and river input. During the upwelling, the surface water moved offshore and is replaced by nutrient-rich subsurface water leading to high concentrations of Chlorophyll-a in a narrow zone along the coast, and preventing the dispersion of Chlorophyll-a into the ocean. Higher concentrations of Chlorophyll-a observed in the nearshore water... view more»

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