Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway
Continuous monitoring of soil temperatures, frost heave, thaw consolidation, pore water pressures and downslope soil movements are reported from a turf-banked solifluction lobe at Steinhoi, Dovrefjell, Norway from August 2002 to August 2006. Mean annual air temperatures over the monitored period wer...
Published in: | Permafrost and Periglacial Processes |
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Language: | English |
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Online Access: | https://discovery.dundee.ac.uk/en/publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc https://doi.org/10.1002/ppp.609 |
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ftunivdundeepure:oai:discovery.dundee.ac.uk:publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc 2024-06-23T07:52:23+00:00 Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway Harris, Charles Kern-Luetschg, Martina Smith, Fraser Isaksen, Ketil 2008 https://discovery.dundee.ac.uk/en/publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc https://doi.org/10.1002/ppp.609 eng eng https://discovery.dundee.ac.uk/en/publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc info:eu-repo/semantics/restrictedAccess Harris , C , Kern-Luetschg , M , Smith , F & Isaksen , K 2008 , ' Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway ' , Permafrost and Periglacial Processes , vol. 19 , no. 1 , pp. 31-47 . https://doi.org/10.1002/ppp.609 article 2008 ftunivdundeepure https://doi.org/10.1002/ppp.609 2024-06-04T14:58:06Z Continuous monitoring of soil temperatures, frost heave, thaw consolidation, pore water pressures and downslope soil movements are reported from a turf-banked solifluction lobe at Steinhoi, Dovrefjell, Norway from August 2002 to August 2006. Mean annual air temperatures over the monitored period were slightly below 0 degrees C, but mean annual ground surface temperatures were around 2 degrees C warmer, due to the insulating effects of snow cover. Seasonal frost penetration was highly dependent on snow thickness, and at the monitoring location varied from 30-38 cm over the four years. The shallow annual frost penetration suggests that the site may be close to the limit of active solifluction in this area. Surface solifluction rates over the period 2002-06 ranged from 0.5 cm yr(-1) at the rear of the lobe tread to 1.6 cm yr(-1) just behind the lobe front, with corresponding soil transport rates of 6 cm(3) cm(-1) yr(-1) and 46 cm(3) cm(-1) yr(-1). Pore water pressure measurements indicated seepage of snowmelt beneath seasonally frozen soil in spring with artesian pressures beneath the confining frozen layer. Soil thawing was associated with surface settlement and downslope soil displacements, but following clearance of the frozen ground, later soil surface settlement was accompanied by retrograde movement. Summer rainfall events caused brief increases in pore pressure, but no further soil movement. Surface displacements exceeded maximum potential frost creep values and it is concluded that gelifluction was an important component of slow near-surface mass movements at this site. Temporal and spatial variations in solifluction rates across the area are likely to be considerable and strongly influenced by snow distribution. Copyright (C) 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper Dovrefjell Permafrost and Periglacial Processes Discovery - University of Dundee Online Publications Dovrefjell ENVELOPE(13.500,13.500,79.000,79.000) Norway Permafrost and Periglacial Processes 19 1 31 47 |
institution |
Open Polar |
collection |
Discovery - University of Dundee Online Publications |
op_collection_id |
ftunivdundeepure |
language |
English |
description |
Continuous monitoring of soil temperatures, frost heave, thaw consolidation, pore water pressures and downslope soil movements are reported from a turf-banked solifluction lobe at Steinhoi, Dovrefjell, Norway from August 2002 to August 2006. Mean annual air temperatures over the monitored period were slightly below 0 degrees C, but mean annual ground surface temperatures were around 2 degrees C warmer, due to the insulating effects of snow cover. Seasonal frost penetration was highly dependent on snow thickness, and at the monitoring location varied from 30-38 cm over the four years. The shallow annual frost penetration suggests that the site may be close to the limit of active solifluction in this area. Surface solifluction rates over the period 2002-06 ranged from 0.5 cm yr(-1) at the rear of the lobe tread to 1.6 cm yr(-1) just behind the lobe front, with corresponding soil transport rates of 6 cm(3) cm(-1) yr(-1) and 46 cm(3) cm(-1) yr(-1). Pore water pressure measurements indicated seepage of snowmelt beneath seasonally frozen soil in spring with artesian pressures beneath the confining frozen layer. Soil thawing was associated with surface settlement and downslope soil displacements, but following clearance of the frozen ground, later soil surface settlement was accompanied by retrograde movement. Summer rainfall events caused brief increases in pore pressure, but no further soil movement. Surface displacements exceeded maximum potential frost creep values and it is concluded that gelifluction was an important component of slow near-surface mass movements at this site. Temporal and spatial variations in solifluction rates across the area are likely to be considerable and strongly influenced by snow distribution. Copyright (C) 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Harris, Charles Kern-Luetschg, Martina Smith, Fraser Isaksen, Ketil |
spellingShingle |
Harris, Charles Kern-Luetschg, Martina Smith, Fraser Isaksen, Ketil Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
author_facet |
Harris, Charles Kern-Luetschg, Martina Smith, Fraser Isaksen, Ketil |
author_sort |
Harris, Charles |
title |
Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
title_short |
Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
title_full |
Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
title_fullStr |
Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
title_full_unstemmed |
Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway |
title_sort |
solifluction processes in an area of seasonal ground freezing, dovrefjell, norway |
publishDate |
2008 |
url |
https://discovery.dundee.ac.uk/en/publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc https://doi.org/10.1002/ppp.609 |
long_lat |
ENVELOPE(13.500,13.500,79.000,79.000) |
geographic |
Dovrefjell Norway |
geographic_facet |
Dovrefjell Norway |
genre |
Dovrefjell Permafrost and Periglacial Processes |
genre_facet |
Dovrefjell Permafrost and Periglacial Processes |
op_source |
Harris , C , Kern-Luetschg , M , Smith , F & Isaksen , K 2008 , ' Solifluction processes in an area of seasonal ground freezing, Dovrefjell, Norway ' , Permafrost and Periglacial Processes , vol. 19 , no. 1 , pp. 31-47 . https://doi.org/10.1002/ppp.609 |
op_relation |
https://discovery.dundee.ac.uk/en/publications/6946ec6a-dcb8-4b24-84b4-f6dbacf141cc |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/ppp.609 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
19 |
container_issue |
1 |
container_start_page |
31 |
op_container_end_page |
47 |
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1802643683884924928 |