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Preliminary optical classification of lakes and coastal waters in Estonia and south Finland Reinart, A.; Herlevi, A.; Arst, H.; Sipelgas, L. (2003). Preliminary optical classification of lakes and coastal waters in Estonia and south Finland. J. Sea Res. 49(4): 357-366. https://dx.doi.org/10.1016/s1385-1101(03)00019-4 In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer Ook verschenen in: Ohlson, M.; Omstedt, A.; Turner, D. (Ed.) (2003). Proceedings of the 22nd Conference of the Baltic Oceanographers (CBO), Stockholm, Sweden, 25-29 November 2001. Journal of Sea Research, 49(4). Elsevier: Amsterdam. 227-374 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 56719 [ aanvragen ]

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Trefwoorden

Attenuation Classification Environments > Aquatic environment > Brackishwater environment Properties > Physical properties > Optical properties Properties > Physical properties > Optical properties > Reflectance Water bodies > Inland waters > Lakes > Dystrophic lakes Water bodies > Inland waters > Lakes > Eutrophic lakes Water bodies > Inland waters > Lakes > Freshwater lakes Water bodies > Inland waters > Lakes > Oligotrophic lakes ANE, Estonia [Marine Regions]; ANE, Finland [Marine Regions]; Estonia [Marine Regions]; Finland [Marine Regions] Brak water; Zoet water

Author keywords

water quality; optical properties; fresh and brackish water

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Auteurs		Top
Reinart, A. Herlevi, A. Arst, H. Sipelgas, L.

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Abstract

A preliminary optical classification of lakes in Estonia and south Finland which can also be used for small bays of the Baltic Sea is elaborated. The classification is based on the optical properties of water (diffuse attenuation coefficient, diffuse reflectance) and parameters that are routinely monitored in water bodies (Secchi depth, concentration of chlorophyll-a, total suspended matter and yellow substance). The data complex used for our classification covers different types of water ecosystems (ranging from oligotrophic to hypertrophic) and the variability of water constituent concentrations in the ice-free period in Estonia and south Finland. Using cluster analysis, we found 5 optical classes of waters: clear (C), moderate (M), turbid (T), very turbid (V) and brown (B). There is satisfactory correspondence between class of water, shape of diffuse attenuation coefficient and diffuse reflectance spectra and trophic state of the lakes.

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