Figure 7
Reflectance spectroscopy in the visible range for a sediment core from Braya Sø.
(A) VIS-RS spectra from each 2 mm increment down core (length 120 cm). The bold line is the mean spectrum Rmean. (B) RABD660–670 data (chlorin). RABD660;670 = {[(6*R590 + 7*R730)/13]/Rmin(660;670)}, where R590 = reflectance at 590 nm, R730 = reflectance at 730 nm, Rmin(660;670) = minimum reflectance at 660 or 670 nm. Spectrum normalization and calculation of relative absorption band depths is fully described in ref. 7.
