Titre du document / Document title

Inherent and apparent optical properties of Lake Peipsi, Estonia

Auteur(s) / Author(s)

REINART Anu ⁽¹⁾ ; PAAVEL Birgot ⁽²⁾ ; PIERSON Don ⁽¹⁾ ; STRÖMBECK Niklas ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Uppsala University, Evolutionary Biology Centre, Department of Limnology, Norbyvägen 20, 752 36 Uppsala, SUEDE
⁽²⁾ Tartu University, Estonian Marine Institute, Mäealuse 10A, 12618 Tallinn, ESTONIE

Résumé / Abstract

Lake Peipsi on the border of Estonia and Russia is a large, shallow, biologically very productive lake. It is bordered by many wetland areas. On the basis of underwater radiation measurements and analyses of water samples we have shown that the optical properties of L. Peipsi are very variable both spatially and temporally, covering a large range of water types previously classified in Estonian and Finnish lakes. Inherent and apparent optical properties are compared with those of the two other large lakes, Vänern and Vättern in Sweden. Lake Peipsi has higher concentrations of optically active substances, which are known to influence satellite measurements and underwater light field. Therefore, the lake complements the continuum between L. Vänern and L. Vättern in terms of water optical properties and adds new data into the database about optical properties of turbid and humic lakes. Results obtained here can be used in bio-optical modeling to develop algorithms for remote sensing and calculations of underwater light field.

Revue / Journal Title

Boreal environment research   ISSN 1239-6095 

Source / Source

Congrès
International Workshop on Changing Climate and Northern Aquatic Ecosystems, Lammi , FINLANDE (25/09/2003)
2004, vol. 9, n^o 5, pp. 357-456 [Document : 17 p.] (1 p.1/4), pp. 429-445 [17 page(s) (article)]

Langue / Language

Anglais

Revue : Anglais ; Français

Editeur / Publisher

Finnish Environment Institute, Helsinski, FINLANDE  (1996) (Revue)

Mots-clés anglais / English Keywords

Scandinavia ; Europe ; Baltic region ; remote sensing ; algorithms ; Modeling ; turbidity ; data bases ; new data ; Light ; satellite measurements ; concentration ; radiation ; wetlands ; lakes ; optical properties ; Sweden ; Estonia ;

Mots-clés français / French Keywords

Scandinavie ; Europe ; Région Baltique ; Télédétection ; Algorithme ; Modélisation ; Turbidité ; Base donnée ; Donnée nouvelle ; Lumière ; Mesure satellite ; Concentration ; Rayonnement ; Zone humide ; Lac ; Propriété optique ; Suède ; Estonie ;

Mots-clés espagnols / Spanish Keywords

Europa ; Báltica ; Detección a distancia ; Algoritmo ; Modelización ; Turbiedad ; Base dato ; Nuevo dato ; Luz ; Concentración ; Radiación ; Terreno húmedo ; Lago ; Propiedad óptica ; Suecia ; Estonia ;

Localisation / Location

INIST-CNRS, Cote INIST : 26705, 35400011431716.0080