Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France
Among various factors, permafrost and frost-thaw cycles play an important role for the stability of steep rock slopes in high alpine regions. Climate change in general and local temperature and precipitation trends in particular are likely to influence permafrost and, consequently, also the stabilit...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.544.7210 2023-05-15T17:55:41+02:00 Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France Ralph Böhlert Stephan Gruber Markus Egli Max Maisch Dagmar Br Wilfried Haeberli Susan Ivy-ochs Markus Christl Peter W. Kubik Philip Deline The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.7210 http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.7210 http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf cosmogenic nuclide dating permafrost text ftciteseerx 2016-01-08T11:14:10Z Among various factors, permafrost and frost-thaw cycles play an important role for the stability of steep rock slopes in high alpine regions. Climate change in general and local temperature and precipitation trends in particular are likely to influence permafrost and, consequently, also the stability of rock walls. As stress relief following deglaciation can be excluded at Aguille du Midi (France), rockfall activity is mainly related to changes in permafrost and frost-thaw cycles. To put modern observations of possible climate-induced rockfalls into perspective, information on past rockfall activity is required. In this study, we investigated a combination of surface exposure dating and spectrometry to derive a correlation between rock surface ages and their spectral properties in homogenous lithology. The surface ages found varied from less than 2,000 years to around 40,000 years, and showed a clear correlation with reflectance behavior in the range 380–580 nm. These results may be a first step towards the possible generation of spatial data fields of age distribution in steep rock walls. This may provide deeper insights into spatial and temporal rock-wall development of permafrost in high alpine permafrost environments. Text permafrost Unknown |
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ftciteseerx |
language |
English |
topic |
cosmogenic nuclide dating permafrost |
spellingShingle |
cosmogenic nuclide dating permafrost Ralph Böhlert Stephan Gruber Markus Egli Max Maisch Dagmar Br Wilfried Haeberli Susan Ivy-ochs Markus Christl Peter W. Kubik Philip Deline Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
topic_facet |
cosmogenic nuclide dating permafrost |
description |
Among various factors, permafrost and frost-thaw cycles play an important role for the stability of steep rock slopes in high alpine regions. Climate change in general and local temperature and precipitation trends in particular are likely to influence permafrost and, consequently, also the stability of rock walls. As stress relief following deglaciation can be excluded at Aguille du Midi (France), rockfall activity is mainly related to changes in permafrost and frost-thaw cycles. To put modern observations of possible climate-induced rockfalls into perspective, information on past rockfall activity is required. In this study, we investigated a combination of surface exposure dating and spectrometry to derive a correlation between rock surface ages and their spectral properties in homogenous lithology. The surface ages found varied from less than 2,000 years to around 40,000 years, and showed a clear correlation with reflectance behavior in the range 380–580 nm. These results may be a first step towards the possible generation of spatial data fields of age distribution in steep rock walls. This may provide deeper insights into spatial and temporal rock-wall development of permafrost in high alpine permafrost environments. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ralph Böhlert Stephan Gruber Markus Egli Max Maisch Dagmar Br Wilfried Haeberli Susan Ivy-ochs Markus Christl Peter W. Kubik Philip Deline |
author_facet |
Ralph Böhlert Stephan Gruber Markus Egli Max Maisch Dagmar Br Wilfried Haeberli Susan Ivy-ochs Markus Christl Peter W. Kubik Philip Deline |
author_sort |
Ralph Böhlert |
title |
Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
title_short |
Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
title_full |
Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
title_fullStr |
Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
title_full_unstemmed |
Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France |
title_sort |
comparison of exposure ages and spectral properties of rock surfaces in steep, high alpine rock walls of aiguille du midi, france |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.7210 http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.7210 http://www.geo.unizh.ch/~stgruber/pubs/boehlert_2008-nicop.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766163649655734272 |