The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost
This paper describes and analyzes the exceptionally large rock-ice avalanche of 40 to 60 million m3 volume that occurred in 2005 from the south face of Mt. Steller (Bering Glacier region, Alaska), which has steep glaciers at the summit. Analysis of seismic signals revealed a series of precursory roc...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.465.1404 2023-05-15T16:20:17+02:00 The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost Christian Huggel Stephan Gruber Rick L. Wessels Bruce F. Molnia The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.1404 http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.1404 http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf cold permafrost Mt. Steller Alaska rock-ice avalanche seismic signals steep glacier thermal modeling text ftciteseerx 2016-01-08T06:51:33Z This paper describes and analyzes the exceptionally large rock-ice avalanche of 40 to 60 million m3 volume that occurred in 2005 from the south face of Mt. Steller (Bering Glacier region, Alaska), which has steep glaciers at the summit. Analysis of seismic signals revealed a series of precursory rock/icefalls and a special sequence interpreted as slip and deformation in glacier ice. Reconstruction of the thermal conditions based on regional climate and radiosonde data yielded mean annual ground surface temperatures of-10 to-15°C for the failure area. Because the slope failure was at depths of meters to decameters we also performed numerical modeling of a 2D temperature profile across the mountain. Results showed that the existence of a hanging glacier in the summit area induces a deep-seated thermal anomaly. We subsequently outline a number of processes that may be effective for slope destabilization with the given thermal conditions. Text glacier glaciers Ice permafrost Alaska Unknown |
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Open Polar |
collection |
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op_collection_id |
ftciteseerx |
language |
English |
topic |
cold permafrost Mt. Steller Alaska rock-ice avalanche seismic signals steep glacier thermal modeling |
spellingShingle |
cold permafrost Mt. Steller Alaska rock-ice avalanche seismic signals steep glacier thermal modeling Christian Huggel Stephan Gruber Rick L. Wessels Bruce F. Molnia The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
topic_facet |
cold permafrost Mt. Steller Alaska rock-ice avalanche seismic signals steep glacier thermal modeling |
description |
This paper describes and analyzes the exceptionally large rock-ice avalanche of 40 to 60 million m3 volume that occurred in 2005 from the south face of Mt. Steller (Bering Glacier region, Alaska), which has steep glaciers at the summit. Analysis of seismic signals revealed a series of precursory rock/icefalls and a special sequence interpreted as slip and deformation in glacier ice. Reconstruction of the thermal conditions based on regional climate and radiosonde data yielded mean annual ground surface temperatures of-10 to-15°C for the failure area. Because the slope failure was at depths of meters to decameters we also performed numerical modeling of a 2D temperature profile across the mountain. Results showed that the existence of a hanging glacier in the summit area induces a deep-seated thermal anomaly. We subsequently outline a number of processes that may be effective for slope destabilization with the given thermal conditions. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Christian Huggel Stephan Gruber Rick L. Wessels Bruce F. Molnia |
author_facet |
Christian Huggel Stephan Gruber Rick L. Wessels Bruce F. Molnia |
author_sort |
Christian Huggel |
title |
The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
title_short |
The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
title_full |
The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
title_fullStr |
The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
title_full_unstemmed |
The 2005 Mt. Steller, Alaska, Rock-Ice Avalanche: A Large Slope Failure in Cold Permafrost |
title_sort |
2005 mt. steller, alaska, rock-ice avalanche: a large slope failure in cold permafrost |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.1404 http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf |
genre |
glacier glaciers Ice permafrost Alaska |
genre_facet |
glacier glaciers Ice permafrost Alaska |
op_source |
http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.1404 http://www.geo.uzh.ch/~stgruber/pubs/huggel_2008-nicop.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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