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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
Peer reviewed article  
Beschikbaar in  Auteurs 
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
Auteurs  Top 
  • Reinart, A.
  • Herlevi, A.
  • Arst, H.
  • Sipelgas, L.
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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