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| Karabashev, Gs. |
| An experimental techniques to estimate the influence of dissolved organic matter (DOM) on remote sensing of chlorophyll in water has been developed, based on the relationship between fluorescence and absorption of light by a substance. The profiles of fluorescence, chlorophyll content in sea water and estimates of light attenuation in water samples were used in the paper. These data have permitted to calculate the regressions linking fluorescence and light absorption at 450 nm by chlorophyll (ABC450) and by DOM (ABD450). The remote sensing needs no correction for DOM if M450 = 100* (ABC450/ABD450) much greater than 100. This technique has been applied to data collected during the international Skagex field experiment in the straits of Skagerrak and... |
| Tipo: Text |
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| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00100/21159/18778.pdf |
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| Karabashev, Gs; Khanaev, Sa; Kuleshov, Af. |
| The variability of ''yellow substance'' in waters of the Skagerrak and the Kattegat was studied during the international Skagex programme in 1990 and 1991. Data on attenuation of light and fluorescence of dissolved organic matter (DOM) in sea water were collected with a spectral transmissiometer and a submersible fluorometer within a depth range of 0-250 m at several stations. More than fifty-fold variations of fluorescence intensity over space and time were due to the combined action of different sources of DOM in the straits. The surface maximum of fluorescing DOM, related to river outflow, was spreading from Oslo fjord to the central Skagerrak in late spring. This maximum may be ecologically important because it diminishes shortwave PAR. In the autumn... |
| Tipo: Text |
Palavras-chave: YELLOW SUBSTANCE; FLUORESCENCE; LIGHT ATTENUATION; SKAGERRAK; KATTEGAT. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00099/21041/18667.pdf |
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