LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008
Permafrost areas receive more and more attention in terms of natural hazards in recent years due to ongoing global warming. Active rockglaciers are mixtures of debris and ice (of different origin) in high-relief environments indicating permafrost conditions for a substantial period of time. Style an...
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ftcopernicus:oai:publications.copernicus.org:nhess37652 2023-05-15T16:37:06+02:00 LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 Avian, M. Kellerer-Pirklbauer, A. Bauer, A. 2018-09-27 application/pdf https://doi.org/10.5194/nhess-9-1087-2009 https://nhess.copernicus.org/articles/9/1087/2009/ eng eng doi:10.5194/nhess-9-1087-2009 https://nhess.copernicus.org/articles/9/1087/2009/ eISSN: 1684-9981 Text 2018 ftcopernicus https://doi.org/10.5194/nhess-9-1087-2009 2020-07-20T16:26:38Z Permafrost areas receive more and more attention in terms of natural hazards in recent years due to ongoing global warming. Active rockglaciers are mixtures of debris and ice (of different origin) in high-relief environments indicating permafrost conditions for a substantial period of time. Style and velocity of the downward movement of this debris-ice-mass is influenced by topoclimatic conditions. The rockglacier Hinteres Langtalkar is stage of extensive modifications in the last decade as a consequence of an extraordinary high surface movement. Terrestrial laserscanning (or LiDAR) campaigns have been out once or twice per year since 2000 to monitor surface dynamics at the highly active front of the rockglacier. High resolution digital terrain models are the basis for annual and inter-annual analysis of surface elevation changes. Results show that the observed area shows predominantly positive surface elevation changes causing a consequent lifting of the surface over the entire period. Nevertheless a decreasing surface lifting of the observed area in the last three years leads to the assumption that the material transport from the upper part declines in the last years. Furthermore the rockglacier front is characterized by extensive mass wasting and partly disintegration of the rockglacier body. As indicated by the LiDAR results as well as from field evidence, this rockglacier front seems to represent a permafrost influenced landslide. Text Ice permafrost Copernicus Publications: E-Journals Natural Hazards and Earth System Sciences 9 4 1087 1094 |
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Copernicus Publications: E-Journals |
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English |
description |
Permafrost areas receive more and more attention in terms of natural hazards in recent years due to ongoing global warming. Active rockglaciers are mixtures of debris and ice (of different origin) in high-relief environments indicating permafrost conditions for a substantial period of time. Style and velocity of the downward movement of this debris-ice-mass is influenced by topoclimatic conditions. The rockglacier Hinteres Langtalkar is stage of extensive modifications in the last decade as a consequence of an extraordinary high surface movement. Terrestrial laserscanning (or LiDAR) campaigns have been out once or twice per year since 2000 to monitor surface dynamics at the highly active front of the rockglacier. High resolution digital terrain models are the basis for annual and inter-annual analysis of surface elevation changes. Results show that the observed area shows predominantly positive surface elevation changes causing a consequent lifting of the surface over the entire period. Nevertheless a decreasing surface lifting of the observed area in the last three years leads to the assumption that the material transport from the upper part declines in the last years. Furthermore the rockglacier front is characterized by extensive mass wasting and partly disintegration of the rockglacier body. As indicated by the LiDAR results as well as from field evidence, this rockglacier front seems to represent a permafrost influenced landslide. |
format |
Text |
author |
Avian, M. Kellerer-Pirklbauer, A. Bauer, A. |
spellingShingle |
Avian, M. Kellerer-Pirklbauer, A. Bauer, A. LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
author_facet |
Avian, M. Kellerer-Pirklbauer, A. Bauer, A. |
author_sort |
Avian, M. |
title |
LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
title_short |
LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
title_full |
LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
title_fullStr |
LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
title_full_unstemmed |
LiDAR for monitoring mass movements in permafrost environments at the cirque Hinteres Langtal, Austria, between 2000 and 2008 |
title_sort |
lidar for monitoring mass movements in permafrost environments at the cirque hinteres langtal, austria, between 2000 and 2008 |
publishDate |
2018 |
url |
https://doi.org/10.5194/nhess-9-1087-2009 https://nhess.copernicus.org/articles/9/1087/2009/ |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
eISSN: 1684-9981 |
op_relation |
doi:10.5194/nhess-9-1087-2009 https://nhess.copernicus.org/articles/9/1087/2009/ |
op_doi |
https://doi.org/10.5194/nhess-9-1087-2009 |
container_title |
Natural Hazards and Earth System Sciences |
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9 |
container_issue |
4 |
container_start_page |
1087 |
op_container_end_page |
1094 |
_version_ |
1766027399080706048 |