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In Situ Time Series Estimation of Downwelling Diffuse Attenuation Coefficient at Southern Bay of Bengal |
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| Authors: | P Muhamed Ashraf S S Shaju D Gayatri P Minu B Meenakumari |
| Institution: | 1. Central Institute of Fisheries Technology, Matsyapuri P.O, Cochin, 682 029, Kerala, India 2. Indian National Centre for Ocean Information Services, Hyderabad, India 3. Indian Council for Agricultural Research, New Delhi, India |
| Abstract: | The present study is aimed to determine the bio-optical characteristics of oceanic waters during South west monsoon in Bay of Bengal using hyperspectral radiometer. The variability of diffuse attenuation coefficient, Kd(λ), with chlorophyll a showed a good relation at shorter wavelengths, indicating the effect of phytoplankton on Kd(λ). The determination coefficient, R2 at 412, 443, 490 and 555 nm were greater than 0.931. A good linear relation between Kd(490) and Kd(λ) was observed at shorter wavelengths. These relationships of Kd(λ) provides a platform to study the underwater light field during Southwest monsoon in Bay of Bengal. |
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