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An Undercooled Scree Slope Detected by Geophysical Investigations in Sporadic Permafrost below 1000 M ASL, Central Austria

Stiegler, Christian LU ; Rode, Matthias; Sass, Oliver and Otto, Jan-Christoph (2014) In Permafrost and Periglacial Processes 25(3). p.194-207
Abstract
Multi-method geophysical investigations, accompanied by microclimatic measurements and vegetation mapping, were performed at an undercooled scree slope near Schladming (Austria) in the eastern Alps in order to detect, map and monitor mountain permafrost. The study site, at an elevation of 990m asl, is one of the lowest-lying examples of a cold, undercooled scree slope in the Alps. Geophysical measurements with electrical resistivity tomography, ground-penetrating radar and seismic refraction indicate the presence of several isolated areas of frozen ground over a full year, far below the regional lower limit of mountain permafrost. Frozen sediments identified at shallow depths (beneath 1-3m) were 5-20m thick and ice-rich. Near-surface... (More)
Multi-method geophysical investigations, accompanied by microclimatic measurements and vegetation mapping, were performed at an undercooled scree slope near Schladming (Austria) in the eastern Alps in order to detect, map and monitor mountain permafrost. The study site, at an elevation of 990m asl, is one of the lowest-lying examples of a cold, undercooled scree slope in the Alps. Geophysical measurements with electrical resistivity tomography, ground-penetrating radar and seismic refraction indicate the presence of several isolated areas of frozen ground over a full year, far below the regional lower limit of mountain permafrost. Frozen sediments identified at shallow depths (beneath 1-3m) were 5-20m thick and ice-rich. Near-surface temperatures at the foot of the scree slope were strongly influenced by pronounced cooling. Vegetation mapping showed a dominance of cryophilic plant species. The results suggest that the scree slope is strongly influenced by the interplay of vegetation cover, ground thermal regime and the distribution of frozen sediments. Copyright (C) 2014 John Wiley & Sons, Ltd. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sporadic permafrost, undercooled scree slope, electrical resistivity, tomography, ground-penetrating radar, seismic refraction, microclimate
in
Permafrost and Periglacial Processes
volume
25
issue
3
pages
194 - 207
publisher
John Wiley & Sons
external identifiers
  • wos:000342236300005
  • scopus:84908302948
ISSN
1099-1530
DOI
10.1002/ppp.1813
language
English
LU publication?
yes
id
f7146e18-b4b5-4f3d-9564-723d411c703e (old id 4709697)
date added to LUP
2014-10-23 12:18:39
date last changed
2017-11-05 03:09:05
@article{f7146e18-b4b5-4f3d-9564-723d411c703e,
  abstract     = {Multi-method geophysical investigations, accompanied by microclimatic measurements and vegetation mapping, were performed at an undercooled scree slope near Schladming (Austria) in the eastern Alps in order to detect, map and monitor mountain permafrost. The study site, at an elevation of 990m asl, is one of the lowest-lying examples of a cold, undercooled scree slope in the Alps. Geophysical measurements with electrical resistivity tomography, ground-penetrating radar and seismic refraction indicate the presence of several isolated areas of frozen ground over a full year, far below the regional lower limit of mountain permafrost. Frozen sediments identified at shallow depths (beneath 1-3m) were 5-20m thick and ice-rich. Near-surface temperatures at the foot of the scree slope were strongly influenced by pronounced cooling. Vegetation mapping showed a dominance of cryophilic plant species. The results suggest that the scree slope is strongly influenced by the interplay of vegetation cover, ground thermal regime and the distribution of frozen sediments. Copyright (C) 2014 John Wiley & Sons, Ltd.},
  author       = {Stiegler, Christian and Rode, Matthias and Sass, Oliver and Otto, Jan-Christoph},
  issn         = {1099-1530},
  keyword      = {sporadic permafrost,undercooled scree slope,electrical resistivity,tomography,ground-penetrating radar,seismic refraction,microclimate},
  language     = {eng},
  number       = {3},
  pages        = {194--207},
  publisher    = {John Wiley & Sons},
  series       = {Permafrost and Periglacial Processes},
  title        = {An Undercooled Scree Slope Detected by Geophysical Investigations in Sporadic Permafrost below 1000 M ASL, Central Austria},
  url          = {http://dx.doi.org/10.1002/ppp.1813},
  volume       = {25},
  year         = {2014},
}