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Proceedings Paper

Variations in bio-optical properties in the Greenland/Iceland/Norwegian seas
Author(s): Runar Dallokken; Roar Sandvik; Egil Sakshaug
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Paper Abstract

Diffuse attenuation coefficients for spectral irradiance Kd((Zeta) (lambda) ) and the total Chl (alpha) + Pheo (alpha) pigment-specific absorption of light by particles ((alpha) p*((lambda) ), algae + detritus), were determined during two cruises (Cardeep 2 and 3) in the Greenland/Iceland/Norwegian (GIN)-Seas. The pigment (Chl (alpha) + Pheo (alpha) ) specific attenuation coefficient Kd*((lambda) ) was compared with Morel's non-linear model for light propagation of solar energy in the ocean and with the pigment specific absorption coefficient by particles, (alpha) p*. Our Kd*((lambda) ) spectrum for the GIN-Seas was in good agreement with values derived from Morel's model for pigment specific light attenuation for 1 mg (Chl (alpha) + Pheo (alpha) ) m-3 for wavelengths in the blue part of the spectrum. Kd*((lambda) ) (apparent optical property) and ap*((lambda) ) (inherent optical property), were in good agreement except at wavelengths > 665 and < 441 nm. This was only true for the (alpha) p*((lambda) ) spectra for which the optical density from 750 - 800 nm was not subtracted.

Paper Details

Date Published: 26 October 1994
PDF: 11 pages
Proc. SPIE 2258, Ocean Optics XII, (26 October 1994); doi: 10.1117/12.190070
Show Author Affiliations
Runar Dallokken, Univ. of Trondheim (Norway)
Roar Sandvik, Univ. of Trondheim (Norway)
Egil Sakshaug, Univ. of Trondheim (Norway)

Published in SPIE Proceedings Vol. 2258:
Ocean Optics XII
Jules S. Jaffe, Editor(s)

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