Evolution of a high-mountain thermokarst lake in the Swiss Alps
Thermokarst lakes, a characteristic landscape element of the Arctic, are rarely found outside arctic situations. Here, a 30-yr photogrammetric monitoring series of a thermokarst lake in the Gruben area, Swiss Alps, is presented. The lake, situated in an environment of dead-ice remains and creeping p...
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University of Colorado, Institute of Arctic and Alpine Research
2001
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ftunivzuerich:oai:www.zora.uzh.ch:63454 2024-10-06T13:44:30+00:00 Evolution of a high-mountain thermokarst lake in the Swiss Alps Kääb, A Haeberli, W 2001 application/pdf https://www.zora.uzh.ch/id/eprint/63454/ https://www.zora.uzh.ch/id/eprint/63454/1/K%C3%A4%C3%A4b_etal_2001_evolution_highmountain.pdf https://doi.org/10.5167/uzh-63454 https://doi.org/10.2307/1552546 eng eng University of Colorado, Institute of Arctic and Alpine Research https://www.zora.uzh.ch/id/eprint/63454/1/K%C3%A4%C3%A4b_etal_2001_evolution_highmountain.pdf doi:10.5167/uzh-63454 doi:10.2307/1552546 urn:issn:0003-0031 info:eu-repo/semantics/restrictedAccess Kääb, A; Haeberli, W (2001). Evolution of a high-mountain thermokarst lake in the Swiss Alps. Arctic, Antarctic, and Alpine Research, 33(4):385-390. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2001 ftunivzuerich https://doi.org/10.5167/uzh-6345410.2307/1552546 2024-09-11T00:49:00Z Thermokarst lakes, a characteristic landscape element of the Arctic, are rarely found outside arctic situations. Here, a 30-yr photogrammetric monitoring series of a thermokarst lake in the Gruben area, Swiss Alps, is presented. The lake, situated in an environment of dead-ice remains and creeping permafrost, reached a final size of ca. 10,000 m² in area and 50,000 m³ in volume before it had to be drained artificially in 1995. Starting in the mid-1960s it grew with radial rates of ca. 1.5 to 5 m yr⁻¹. Nonlinear coupling of lake diameter and energy turnover led to accelerated area growth. The development of the lake was presumably driven by thermal convection of water. By a dynamic model of lake growth, we show that a change in climate conditions and/or the lake bottom topography could have significantly influenced the observed lake growth. The effective energy turnover used for ice-melt and subsequent lake growth was estimated to be in the order 10⁰ to 10¹ W m⁻². Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Ice permafrost Thermokarst University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Arctic Gruben ENVELOPE(14.223,14.223,66.318,66.318) |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel |
spellingShingle |
Institute of Geography 910 Geography & travel Kääb, A Haeberli, W Evolution of a high-mountain thermokarst lake in the Swiss Alps |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
Thermokarst lakes, a characteristic landscape element of the Arctic, are rarely found outside arctic situations. Here, a 30-yr photogrammetric monitoring series of a thermokarst lake in the Gruben area, Swiss Alps, is presented. The lake, situated in an environment of dead-ice remains and creeping permafrost, reached a final size of ca. 10,000 m² in area and 50,000 m³ in volume before it had to be drained artificially in 1995. Starting in the mid-1960s it grew with radial rates of ca. 1.5 to 5 m yr⁻¹. Nonlinear coupling of lake diameter and energy turnover led to accelerated area growth. The development of the lake was presumably driven by thermal convection of water. By a dynamic model of lake growth, we show that a change in climate conditions and/or the lake bottom topography could have significantly influenced the observed lake growth. The effective energy turnover used for ice-melt and subsequent lake growth was estimated to be in the order 10⁰ to 10¹ W m⁻². |
format |
Article in Journal/Newspaper |
author |
Kääb, A Haeberli, W |
author_facet |
Kääb, A Haeberli, W |
author_sort |
Kääb, A |
title |
Evolution of a high-mountain thermokarst lake in the Swiss Alps |
title_short |
Evolution of a high-mountain thermokarst lake in the Swiss Alps |
title_full |
Evolution of a high-mountain thermokarst lake in the Swiss Alps |
title_fullStr |
Evolution of a high-mountain thermokarst lake in the Swiss Alps |
title_full_unstemmed |
Evolution of a high-mountain thermokarst lake in the Swiss Alps |
title_sort |
evolution of a high-mountain thermokarst lake in the swiss alps |
publisher |
University of Colorado, Institute of Arctic and Alpine Research |
publishDate |
2001 |
url |
https://www.zora.uzh.ch/id/eprint/63454/ https://www.zora.uzh.ch/id/eprint/63454/1/K%C3%A4%C3%A4b_etal_2001_evolution_highmountain.pdf https://doi.org/10.5167/uzh-63454 https://doi.org/10.2307/1552546 |
long_lat |
ENVELOPE(14.223,14.223,66.318,66.318) |
geographic |
Arctic Gruben |
geographic_facet |
Arctic Gruben |
genre |
Antarctic and Alpine Research Arctic Arctic Ice permafrost Thermokarst |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Ice permafrost Thermokarst |
op_source |
Kääb, A; Haeberli, W (2001). Evolution of a high-mountain thermokarst lake in the Swiss Alps. Arctic, Antarctic, and Alpine Research, 33(4):385-390. |
op_relation |
https://www.zora.uzh.ch/id/eprint/63454/1/K%C3%A4%C3%A4b_etal_2001_evolution_highmountain.pdf doi:10.5167/uzh-63454 doi:10.2307/1552546 urn:issn:0003-0031 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.5167/uzh-6345410.2307/1552546 |
_version_ |
1812182950189465600 |