Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria
Permafrost is being degraded worldwide due to the change in external forcing caused by climate change. This has also been shown to affect the morphodynamics of active rock glaciers. We studied these changes, depending on the analysis, on nine or eight active rock glaciers, respectively, with differe...
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ftdoajarticles:oai:doaj.org/article:1471c9ace6d346cfb01bd7001260d4fc 2023-05-15T17:57:58+02:00 Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria F. Fleischer F. Haas L. Piermattei M. Pfeiffer T. Heckmann M. Altmann J. Rom M. Stark M. H. Wimmer N. Pfeifer M. Becht 2021-12-01T00:00:00Z https://doi.org/10.5194/tc-15-5345-2021 https://doaj.org/article/1471c9ace6d346cfb01bd7001260d4fc EN eng Copernicus Publications https://tc.copernicus.org/articles/15/5345/2021/tc-15-5345-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5345-2021 1994-0416 1994-0424 https://doaj.org/article/1471c9ace6d346cfb01bd7001260d4fc The Cryosphere, Vol 15, Pp 5345-5369 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-5345-2021 2022-12-31T13:59:49Z Permafrost is being degraded worldwide due to the change in external forcing caused by climate change. This has also been shown to affect the morphodynamics of active rock glaciers. We studied these changes, depending on the analysis, on nine or eight active rock glaciers, respectively, with different characteristics in multiple epochs between 1953 and 2017 in Kaunertal, Austria. A combination of historical aerial photographs and airborne laser scanning data and their derivatives were used to analyse surface movement and surface elevation change. In general, the studied landforms showed a significant acceleration of varying magnitude in the epoch 1997–2006 and a volume loss to variable degrees throughout the investigation period. Rock glaciers related to glacier forefields showed significantly higher rates of subsidence than talus-connected ones. Besides, we detected two rock glaciers with deviating behaviour and one that showed an inactivation of its terminal part. By analysing meteorological data (temperature, precipitation and snow cover onset and duration), we were able to identify possible links to these external forcing parameters. The catchment-wide survey further revealed that, despite the general trend, timing, magnitude and temporal peaks of morphodynamic changes indicate a slightly different sensitivity, response or response time of individual rock glaciers to fluctuations and changes in external forcing parameters. Article in Journal/Newspaper permafrost The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 15 12 5345 5369 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
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Environmental sciences GE1-350 Geology QE1-996.5 F. Fleischer F. Haas L. Piermattei M. Pfeiffer T. Heckmann M. Altmann J. Rom M. Stark M. H. Wimmer N. Pfeifer M. Becht Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Permafrost is being degraded worldwide due to the change in external forcing caused by climate change. This has also been shown to affect the morphodynamics of active rock glaciers. We studied these changes, depending on the analysis, on nine or eight active rock glaciers, respectively, with different characteristics in multiple epochs between 1953 and 2017 in Kaunertal, Austria. A combination of historical aerial photographs and airborne laser scanning data and their derivatives were used to analyse surface movement and surface elevation change. In general, the studied landforms showed a significant acceleration of varying magnitude in the epoch 1997–2006 and a volume loss to variable degrees throughout the investigation period. Rock glaciers related to glacier forefields showed significantly higher rates of subsidence than talus-connected ones. Besides, we detected two rock glaciers with deviating behaviour and one that showed an inactivation of its terminal part. By analysing meteorological data (temperature, precipitation and snow cover onset and duration), we were able to identify possible links to these external forcing parameters. The catchment-wide survey further revealed that, despite the general trend, timing, magnitude and temporal peaks of morphodynamic changes indicate a slightly different sensitivity, response or response time of individual rock glaciers to fluctuations and changes in external forcing parameters. |
format |
Article in Journal/Newspaper |
author |
F. Fleischer F. Haas L. Piermattei M. Pfeiffer T. Heckmann M. Altmann J. Rom M. Stark M. H. Wimmer N. Pfeifer M. Becht |
author_facet |
F. Fleischer F. Haas L. Piermattei M. Pfeiffer T. Heckmann M. Altmann J. Rom M. Stark M. H. Wimmer N. Pfeifer M. Becht |
author_sort |
F. Fleischer |
title |
Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
title_short |
Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
title_full |
Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
title_fullStr |
Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
title_full_unstemmed |
Multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper Kaunertal, Austria |
title_sort |
multi-decadal (1953–2017) rock glacier kinematics analysed by high-resolution topographic data in the upper kaunertal, austria |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5345-2021 https://doaj.org/article/1471c9ace6d346cfb01bd7001260d4fc |
genre |
permafrost The Cryosphere |
genre_facet |
permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 5345-5369 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/5345/2021/tc-15-5345-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5345-2021 1994-0416 1994-0424 https://doaj.org/article/1471c9ace6d346cfb01bd7001260d4fc |
op_doi |
https://doi.org/10.5194/tc-15-5345-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
12 |
container_start_page |
5345 |
op_container_end_page |
5369 |
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