Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland
ABSTRACT This study investigates and compares active layer characteristics determined from ground temperature measurements at ten borehole sites in various types of Alpine permafrost terrain. Active layer thickness ( ALT ) remained fairly constant at the individual boreholes over the past five to 14...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2012
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.1738 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1738 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1738 |
id |
crwiley:10.1002/ppp.1738 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.1738 2024-06-02T07:54:17+00:00 Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland Zenklusen Mutter, Evelyn Phillips, Marcia 2012 http://dx.doi.org/10.1002/ppp.1738 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1738 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1738 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 23, issue 2, page 138-151 ISSN 1045-6740 1099-1530 journal-article 2012 crwiley https://doi.org/10.1002/ppp.1738 2024-05-06T07:01:53Z ABSTRACT This study investigates and compares active layer characteristics determined from ground temperature measurements at ten borehole sites in various types of Alpine permafrost terrain. Active layer thickness ( ALT ) remained fairly constant at the individual boreholes over the past five to 14 years, but was highly variable among the sites due to local terrain characteristics. To allow intra‐site comparisons, a characteristic depth within the active layer was determined for each site. The temperature series either measured or interpolated for that depth were used to investigate different thermal stages during the annual thawing and refreezing cycle. The relation between air temperature thawing‐degree days and ALT was investigated on an annual, seasonal and daily basis. The results show that at least daily data are required to establish the relevant characteristics of active layer development. Periods of slow advance of the thaw plane, interpreted as being due to the presence of ice‐bearing layers within the active layer, are particularly important to the final ALT . Rapid active layer deepening, however, can occur due to the formation of taliks caused by lateral thermal disturbances below the active layer. Copyright © 2012 John Wiley & Sons, Ltd. Article in Journal/Newspaper Active layer thickness Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 23 2 138 151 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT This study investigates and compares active layer characteristics determined from ground temperature measurements at ten borehole sites in various types of Alpine permafrost terrain. Active layer thickness ( ALT ) remained fairly constant at the individual boreholes over the past five to 14 years, but was highly variable among the sites due to local terrain characteristics. To allow intra‐site comparisons, a characteristic depth within the active layer was determined for each site. The temperature series either measured or interpolated for that depth were used to investigate different thermal stages during the annual thawing and refreezing cycle. The relation between air temperature thawing‐degree days and ALT was investigated on an annual, seasonal and daily basis. The results show that at least daily data are required to establish the relevant characteristics of active layer development. Periods of slow advance of the thaw plane, interpreted as being due to the presence of ice‐bearing layers within the active layer, are particularly important to the final ALT . Rapid active layer deepening, however, can occur due to the formation of taliks caused by lateral thermal disturbances below the active layer. Copyright © 2012 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Zenklusen Mutter, Evelyn Phillips, Marcia |
spellingShingle |
Zenklusen Mutter, Evelyn Phillips, Marcia Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
author_facet |
Zenklusen Mutter, Evelyn Phillips, Marcia |
author_sort |
Zenklusen Mutter, Evelyn |
title |
Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
title_short |
Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
title_full |
Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
title_fullStr |
Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
title_full_unstemmed |
Active Layer Characteristics At Ten Borehole Sites In Alpine Permafrost Terrain, Switzerland |
title_sort |
active layer characteristics at ten borehole sites in alpine permafrost terrain, switzerland |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/ppp.1738 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1738 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1738 |
genre |
Active layer thickness Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Active layer thickness Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 23, issue 2, page 138-151 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1738 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
23 |
container_issue |
2 |
container_start_page |
138 |
op_container_end_page |
151 |
_version_ |
1800751474810028032 |