. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. or suspended, in the water. Since scattering is generally not wavelength sensitive, except when highly colored particles are present (Jerlov, 1976), blue and green wavelengths should be equally affected by scattering. Absorption is wave length dependent. Therefore, we assume that, if the green and blue wave lengths were similarly affected under the same conditions, scattering predominated. Least squares regression analysis (outliers dropped) reveals that attenuation of green light is significantly correlated w
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. or suspended, in the water. Since scattering is generally not wavelength sensitive, except when highly colored particles are present (Jerlov, 1976), blue and green wavelengths should be equally affected by scattering. Absorption is wave length dependent. Therefore, we assume that, if the green and blue wave lengths were similarly affected under the same conditions, scattering predominated. Least squares regression analysis (outliers dropped) reveals that attenuation of green light is significantly correlated with TSM at the .999 confidence level (Fig. 3), as well as with the concentrations of MSM and OSM at the same confidence level. Attenuation of blue light, on the other hand, is correlated only with the concentration of OSM at a .997 confidence level (Fig. 4), and is not significantly correlated with either the concentration of TSM or MSM. This suggests that the dominant cause of blue light attenuation is absorption by organic material, not scattering. Dissolved organic GREEN ATTENUATION VS TOTAL CONC. r = 1 Total Concentration (mg/l) Figure 3. Plot of green attenuation (c/m) versus TSM concentration (mg/l). r= One outlier not included in plot. material, giving rise to the reddish-brown coloration in the water, plays an important part in the absorption process by selectively absorbing the blue wavelengths of light. Interestingly, concentrations of organic and mineral suspensates are not significantly correlated with each other. This indicates that the organic and mineral phases of suspended particulates are derived from different sources; , organic suspensates from the mangrove swamps and mineral suspensates from the Main Channel and fringing Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the orig
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