Abstract
The optical properties in a non-spectral mode covering Photosynthetically Active Radiation (PAR) was estimated in the Arabian Sea in the west coast of India. The attenuation coefficients, light transmittance and K/c ratio were found useful for classification of water bodies in the coastal and offshore region. High values of turbidity and Chlorophyll-a in coastal waters associated with comparatively higher values of diffusive attenuation coefficients for upwelling and downwelling irradiances. On the basis of attenuation coefficients and K/c ratio derived from upwelling and downwelling irradiances, the water bodies were classified as defincd by Jerlov (1976). The coastal waters are classified under Jerlov water types of 3 to 9, whereas those of offshore are falling under the categories Ia, Ib and II.
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References
Jerlov N G (1976). ‘Marine Optics’, Elsevier Sci Pub. New York, 23lp
La Fond E C and Sastry J S (1957). Turbidity of waters off the east coast of India. Indian J. Met. & Geophy., 8, 183–192.
Muralikrishna I V (1983). Ocean colour studies in Arabian Sea. In Remote Sensing Applications in Marine Science and Technology, edited by A P Cracknell (D. Reidei Publishing Company), pp 299–316.
Preisendorfer R W (1964). A model for radiance distribution in natural hydrosols. In ‘Light in the Sea’ (edited by J E Tylor), University of Hawii Press, Amsterdam, pp 51–59.
Qasim S Z (1977). Biological productivity of the Indian Ocean. Indian J. Mar. Sci, India, 6:122–137.
Raman K V S and Murty K V S (1968). Transparency measurements along some typical sections off Malabar and Coramandal coast. Bull. Nat. Inst. Sci., India, 38:277–288.
Rao T S S (1957). Studies on the penetration of light in the Bay of Bengal. Proc. Nat. Inst. Sci., India, 23, 165 p.
Sathyendranath S and Morel A (1983). Light emerging from the sea-interpretation and uses in remote sensing. In Remote Sensing Applications in Marine Science and Technology, edited by A P Cracknell, (D. Reidel Publishing Company), pp323–357.
Sathyendranath S and Platt T (1988). The spectral irradiance field at the surface and in the interior of the ocean: a model for applications in oceanography and remote sensing. J. Geophys. Res, 93:9270–9280.
Strickland J D H and Parsons T R (1972). A Practical Handbook of Seawater Analysis, (Bull Fish Res Bd, Canada) 167, 310 p.
Spinard R W, Ronald J, Zaneveld V and Pak H (1979). Spectral irradiance and beam transmittance measurements off the west coast of America. J. Geophys. Res, 84:355–358.
Varkey M J and Kesavadas V (1976). Light transmission characteristics of the north Arabian Sea during December-May. Indian J. Mar. Sci, 5:147.
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Sasmal, S.K. Optical classification of waters in the eastern arabian sea. J Indian Soc Remote Sens 25, 73–78 (1997). https://doi.org/10.1007/BF03025905
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DOI: https://doi.org/10.1007/BF03025905