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Journal Articles INTERNATIONAL JOURNAL OF REMOTE SENSING Year : 2005

Use of reflectance band ratios to estimate suspended and dissolved matter concentrations in estuarine waters

(1) , ,
1
Rcn Cherukuru
  • Function : Author
Sj Lavender
  • Function : Author

Abstract

In the Tamar estuary (south-west UK), the concentrations of coloured dissolved organic and suspended ( total, organic and inorganic) matter were measured and related to in situ hyperspectral remote-sensing reflectance (R-rs) measurements. A simple method was used to determine the R-rs signal from underwater optical measurements, in order to avoid any surface reflection effects. As previously observed in other estuaries, a large correlation was obtained between the R-rs(850 nm)/R-rs(550 nm) ratio and total suspended matter concentration. The same R-rs ratio was also highly correlated to the inorganic suspended matter concentration. The corresponding relationships are linear. The R-rs(400 nm)/R-rs(600 nm) ratio correlates with the coloured dissolved organic matter concentration, according to a power law regression. These relationships, which appeared to be invariant during the summer period (June-September) and valid for the whole estuary, may be applied to airborne remote sensing data to map the tidal movements of turbidity in the estuary.
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Dates and versions

hal-03494222 , version 1 (18-12-2021)

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D Doxaran, Rcn Cherukuru, Sj Lavender. Use of reflectance band ratios to estimate suspended and dissolved matter concentrations in estuarine waters. INTERNATIONAL JOURNAL OF REMOTE SENSING, 2005, 26 (8), pp.1763-1769. ⟨10.1080/01431160512331314092⟩. ⟨hal-03494222⟩
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