Classification of polar lakes: a geographical and limnological approach
International audience The major typological criterion for classifying polar lakes is the isolation by the ice cover. The significance of this phenomenon depends on the inter-annual regularity of the ice regime. Continental glaciers are the main obstacle between water and atmosphere; perennially fro...
Published in: | Norois |
---|---|
Main Author: | |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | French |
Published: |
HAL CCSD
2005
|
Subjects: | |
Online Access: | https://univ-orleans.hal.science/hal-02101044 https://doi.org/10.4000/norois.665 |
id |
ftunivorleans:oai:HAL:hal-02101044v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivorleans:oai:HAL:hal-02101044v1 2024-06-23T07:51:36+00:00 Classification of polar lakes: a geographical and limnological approach Typologie des lacs polaires: une démarche de géographie limnologique Touchart, Laurent Centre d'Etudes pour le Développement des Territoires et l'Environnement (CEDETE) Université d'Orléans (UO) 2005-03-01 https://univ-orleans.hal.science/hal-02101044 https://doi.org/10.4000/norois.665 fr fre HAL CCSD Presses universitaires de Rennes [1954-.] info:eu-repo/semantics/altIdentifier/doi/10.4000/norois.665 hal-02101044 https://univ-orleans.hal.science/hal-02101044 doi:10.4000/norois.665 ISSN: 0029-182X EISSN: 1760-8546 Norois. Environnement, aménagement, société https://univ-orleans.hal.science/hal-02101044 Norois. Environnement, aménagement, société, 2005, 194, pp.97-107. ⟨10.4000/norois.665⟩ lake lake freezing lake ice mixing oligotrophication polar limnology pond water temperature micticité oligotrophie température de l’eau étang glace de lac lac limnologie polaire [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/article Journal articles 2005 ftunivorleans https://doi.org/10.4000/norois.665 2024-06-11T14:12:31Z International audience The major typological criterion for classifying polar lakes is the isolation by the ice cover. The significance of this phenomenon depends on the inter-annual regularity of the ice regime. Continental glaciers are the main obstacle between water and atmosphere; perennially frozen lakes are largely isolated too. The seasonally frozen lakes are either shallow and deep lakes. Polar ponds and shallow lakes, which may completely freeze and disappear each year, are biologically poor, whereas deep polar lakes present a complete trophic cycle despite the great water level fluctuations. Le critère typologique de l’isolement dû à la glace est majeur et son importance est replacée en fonction de la régularité interannuelle du taux de la couverture glaciaire ou glacielle. La barrière la plus hermétique est celle d’un glacier continental, suivie par celle d’une banquise lacustre permanente. Chez les lacs à couverture glacielle saisonnière, les plans d’eau superficiels, que le gel est susceptible de faire disparaître chaque année, ont une chaîne trophique beaucoup plus pauvre que les grands lacs profonds, capables de fournir des conditions favorables à la vie malgré l’ampleur du marnage. Article in Journal/Newspaper banquise Université d'Orléans: HAL Norois 194 97 107 |
institution |
Open Polar |
collection |
Université d'Orléans: HAL |
op_collection_id |
ftunivorleans |
language |
French |
topic |
lake lake freezing lake ice mixing oligotrophication polar limnology pond water temperature micticité oligotrophie température de l’eau étang glace de lac lac limnologie polaire [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
lake lake freezing lake ice mixing oligotrophication polar limnology pond water temperature micticité oligotrophie température de l’eau étang glace de lac lac limnologie polaire [SHS.GEO]Humanities and Social Sciences/Geography Touchart, Laurent Classification of polar lakes: a geographical and limnological approach |
topic_facet |
lake lake freezing lake ice mixing oligotrophication polar limnology pond water temperature micticité oligotrophie température de l’eau étang glace de lac lac limnologie polaire [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience The major typological criterion for classifying polar lakes is the isolation by the ice cover. The significance of this phenomenon depends on the inter-annual regularity of the ice regime. Continental glaciers are the main obstacle between water and atmosphere; perennially frozen lakes are largely isolated too. The seasonally frozen lakes are either shallow and deep lakes. Polar ponds and shallow lakes, which may completely freeze and disappear each year, are biologically poor, whereas deep polar lakes present a complete trophic cycle despite the great water level fluctuations. Le critère typologique de l’isolement dû à la glace est majeur et son importance est replacée en fonction de la régularité interannuelle du taux de la couverture glaciaire ou glacielle. La barrière la plus hermétique est celle d’un glacier continental, suivie par celle d’une banquise lacustre permanente. Chez les lacs à couverture glacielle saisonnière, les plans d’eau superficiels, que le gel est susceptible de faire disparaître chaque année, ont une chaîne trophique beaucoup plus pauvre que les grands lacs profonds, capables de fournir des conditions favorables à la vie malgré l’ampleur du marnage. |
author2 |
Centre d'Etudes pour le Développement des Territoires et l'Environnement (CEDETE) Université d'Orléans (UO) |
format |
Article in Journal/Newspaper |
author |
Touchart, Laurent |
author_facet |
Touchart, Laurent |
author_sort |
Touchart, Laurent |
title |
Classification of polar lakes: a geographical and limnological approach |
title_short |
Classification of polar lakes: a geographical and limnological approach |
title_full |
Classification of polar lakes: a geographical and limnological approach |
title_fullStr |
Classification of polar lakes: a geographical and limnological approach |
title_full_unstemmed |
Classification of polar lakes: a geographical and limnological approach |
title_sort |
classification of polar lakes: a geographical and limnological approach |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://univ-orleans.hal.science/hal-02101044 https://doi.org/10.4000/norois.665 |
genre |
banquise |
genre_facet |
banquise |
op_source |
ISSN: 0029-182X EISSN: 1760-8546 Norois. Environnement, aménagement, société https://univ-orleans.hal.science/hal-02101044 Norois. Environnement, aménagement, société, 2005, 194, pp.97-107. ⟨10.4000/norois.665⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.4000/norois.665 hal-02101044 https://univ-orleans.hal.science/hal-02101044 doi:10.4000/norois.665 |
op_doi |
https://doi.org/10.4000/norois.665 |
container_title |
Norois |
container_issue |
194 |
container_start_page |
97 |
op_container_end_page |
107 |
_version_ |
1802642715110801408 |