The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines
Knowledge of the characteristics and spatial distribution of permafrost in Iceland is important to understanding slope stability, climate change impacts and palaeo-glaciology. The permafrost distribution there, however, is poorly constrained. The presence of rock glaciers and stable ice-cored morain...
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ftunivzuerich:oai:www.zora.uzh.ch:87252 2024-06-23T07:53:37+00:00 The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines Lilleøren, Karianne S Etzelmüller, Bernd Gärtner-Roer, Isabelle Kääb, Andreas Westermann, Sebastian Guðmundsson, Águst 2013 application/pdf https://www.zora.uzh.ch/id/eprint/87252/ https://www.zora.uzh.ch/id/eprint/87252/1/2013_K%C3%A4%C3%A4bA_ppp1792.pdf https://doi.org/10.5167/uzh-87252 https://doi.org/10.1002/ppp.1792 eng eng Wiley-Blackwell https://www.zora.uzh.ch/id/eprint/87252/1/2013_K%C3%A4%C3%A4bA_ppp1792.pdf doi:10.5167/uzh-87252 doi:10.1002/ppp.1792 urn:issn:1045-6740 info:eu-repo/semantics/restrictedAccess Lilleøren, Karianne S; Etzelmüller, Bernd; Gärtner-Roer, Isabelle; Kääb, Andreas; Westermann, Sebastian; Guðmundsson, Águst (2013). The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines. Permafrost and Periglacial Processes, 24(4):322-335. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftunivzuerich https://doi.org/10.5167/uzh-8725210.1002/ppp.1792 2024-06-12T00:30:48Z Knowledge of the characteristics and spatial distribution of permafrost in Iceland is important to understanding slope stability, climate change impacts and palaeo-glaciology. The permafrost distribution there, however, is poorly constrained. The presence of rock glaciers and stable ice-cored moraines in mountain settings relates to permafrost, making such landforms indicators of present or past permafrost. This study combines recently published aerial photographs (2002–07), radar interferometry based on Advanced Land Observing Satellite phased array type L-band synthetic aperture radar (ALOS PALSAR) data (2007), land surface temperatures estimated from moderate-resolution imaging spectroradiometer satellite data (MODIS; 2003–10) and field mapping to re-examine the permafrost distribution, thermal characteristics and dynamics on the Tröllaskagi peninsula. An inventory of 265 landforms, mostly active or inactive (intact), categorised them by genesis and activity, the latter independently investigated by PALSAR interferometry. Intact landforms are mainly glacigenic, occurring as moraine-derived rock glaciers or ice-cored moraines. Their dominant orientation is between north and northeast, suggesting that topography and exposure influence their presentday formation. Permafrost landforms exist at all elevations on the Tröllaskagi peninsula, with intact landforms at high elevations and relict landforms reaching down to sea level. Rock glaciers at sea level may imply early deglaciation of northern Iceland. Article in Journal/Newspaper Ice Iceland permafrost Permafrost and Periglacial Processes University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
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Open Polar |
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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 Lilleøren, Karianne S Etzelmüller, Bernd Gärtner-Roer, Isabelle Kääb, Andreas Westermann, Sebastian Guðmundsson, Águst The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
Knowledge of the characteristics and spatial distribution of permafrost in Iceland is important to understanding slope stability, climate change impacts and palaeo-glaciology. The permafrost distribution there, however, is poorly constrained. The presence of rock glaciers and stable ice-cored moraines in mountain settings relates to permafrost, making such landforms indicators of present or past permafrost. This study combines recently published aerial photographs (2002–07), radar interferometry based on Advanced Land Observing Satellite phased array type L-band synthetic aperture radar (ALOS PALSAR) data (2007), land surface temperatures estimated from moderate-resolution imaging spectroradiometer satellite data (MODIS; 2003–10) and field mapping to re-examine the permafrost distribution, thermal characteristics and dynamics on the Tröllaskagi peninsula. An inventory of 265 landforms, mostly active or inactive (intact), categorised them by genesis and activity, the latter independently investigated by PALSAR interferometry. Intact landforms are mainly glacigenic, occurring as moraine-derived rock glaciers or ice-cored moraines. Their dominant orientation is between north and northeast, suggesting that topography and exposure influence their presentday formation. Permafrost landforms exist at all elevations on the Tröllaskagi peninsula, with intact landforms at high elevations and relict landforms reaching down to sea level. Rock glaciers at sea level may imply early deglaciation of northern Iceland. |
format |
Article in Journal/Newspaper |
author |
Lilleøren, Karianne S Etzelmüller, Bernd Gärtner-Roer, Isabelle Kääb, Andreas Westermann, Sebastian Guðmundsson, Águst |
author_facet |
Lilleøren, Karianne S Etzelmüller, Bernd Gärtner-Roer, Isabelle Kääb, Andreas Westermann, Sebastian Guðmundsson, Águst |
author_sort |
Lilleøren, Karianne S |
title |
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
title_short |
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
title_full |
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
title_fullStr |
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
title_full_unstemmed |
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
title_sort |
distribution, thermal characteristics and dynamics of permafrost in tröllaskagi, northern iceland, as inferred from the distribution of rock glaciers and ice-cored moraines |
publisher |
Wiley-Blackwell |
publishDate |
2013 |
url |
https://www.zora.uzh.ch/id/eprint/87252/ https://www.zora.uzh.ch/id/eprint/87252/1/2013_K%C3%A4%C3%A4bA_ppp1792.pdf https://doi.org/10.5167/uzh-87252 https://doi.org/10.1002/ppp.1792 |
genre |
Ice Iceland permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice Iceland permafrost Permafrost and Periglacial Processes |
op_source |
Lilleøren, Karianne S; Etzelmüller, Bernd; Gärtner-Roer, Isabelle; Kääb, Andreas; Westermann, Sebastian; Guðmundsson, Águst (2013). The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines. Permafrost and Periglacial Processes, 24(4):322-335. |
op_relation |
https://www.zora.uzh.ch/id/eprint/87252/1/2013_K%C3%A4%C3%A4bA_ppp1792.pdf doi:10.5167/uzh-87252 doi:10.1002/ppp.1792 urn:issn:1045-6740 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.5167/uzh-8725210.1002/ppp.1792 |
_version_ |
1802645365340504064 |