Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen
This article describes and discusses the results of observations concerning short-term changes in the thermal conditions and the thickness of the active layer in a test field located in the tundra of the Kaffiøyra (NW Spitsbergen) during the summer season of 2015. One of the objectives was to find a...
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ftunivtorunir:oai:repozytorium.umk.pl:item/4175 2023-05-15T13:03:36+02:00 Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen Sobota, Ireneusz Dziembowski, Michał Grajewski, Tomasz Weckwerth, Piotr Nowak, Marcin 2017-01-09 http://repozytorium.umk.pl/handle/item/4175 https://doi.org/10.2478/11147 eng eng Bulletin of Geography. Physical Geography Series, No. 11, pp. 43-53 2300-8490 doi:10.2478/11147 http://repozytorium.umk.pl/handle/item/4175 http://creativecommons.org/licenses/by-nd/3.0/pl/ Attribution-NoDerivs 3.0 Poland info:eu-repo/semantics/openAccess CC-BY-ND permafrost active layer Kaffiøyra Svalbard info:eu-repo/semantics/article 2017 ftunivtorunir https://doi.org/10.2478/11147 2022-02-22T17:32:34Z This article describes and discusses the results of observations concerning short-term changes in the thermal conditions and the thickness of the active layer in a test field located in the tundra of the Kaffiøyra (NW Spitsbergen) during the summer season of 2015. One of the objectives was to find a correlation between the dynamic of the changes and the local topography. In recent years, thawing of the active layer in the Kaffiøyra region has been considerably varied in individual summer seasons. The test field area was 100 square meters, comprised 36 measurement points and was situated at approximately 3 m a.s.l. in the tundra. The measurements of the thickness and temperature of the active layer were carried out in July, August and early September of 2015. The greatest thickness of the active layer in the tundra was found near the moraine, in the area with the sharpest slope (156 cm to 212 cm). Ground temperatures were observed to follow the prevailing weather conditions with a delay, which amounted to about 24 h at a depth of 25 cm, and as much as 48 h at a depth of 75 cm. A greater thickness of the active layer was found in the western part of the test field, in the vicinity of a tidal channel, and in the eastern part of the field, bordering on the foot of the Aavatsmarkbreen’s moraine. A considerable sloping of the land, combined with increased surface runoff and infiltration at the time of precipitation, makes the water penetrating into the active layer increase its temperature. This demonstrates that the local land forms (tidal channels and terminal moraines) have a substantial influence on the extent and rate of changes which occur in the active layer. Article in Journal/Newspaper Active layer thickness permafrost Svalbard Tundra Spitsbergen Nicolaus Copernicus University (UMK) Torun: RUM@K Kaffiøyra ENVELOPE(12.002,12.002,78.627,78.627) Svalbard |
institution |
Open Polar |
collection |
Nicolaus Copernicus University (UMK) Torun: RUM@K |
op_collection_id |
ftunivtorunir |
language |
English |
topic |
permafrost active layer Kaffiøyra Svalbard |
spellingShingle |
permafrost active layer Kaffiøyra Svalbard Sobota, Ireneusz Dziembowski, Michał Grajewski, Tomasz Weckwerth, Piotr Nowak, Marcin Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
topic_facet |
permafrost active layer Kaffiøyra Svalbard |
description |
This article describes and discusses the results of observations concerning short-term changes in the thermal conditions and the thickness of the active layer in a test field located in the tundra of the Kaffiøyra (NW Spitsbergen) during the summer season of 2015. One of the objectives was to find a correlation between the dynamic of the changes and the local topography. In recent years, thawing of the active layer in the Kaffiøyra region has been considerably varied in individual summer seasons. The test field area was 100 square meters, comprised 36 measurement points and was situated at approximately 3 m a.s.l. in the tundra. The measurements of the thickness and temperature of the active layer were carried out in July, August and early September of 2015. The greatest thickness of the active layer in the tundra was found near the moraine, in the area with the sharpest slope (156 cm to 212 cm). Ground temperatures were observed to follow the prevailing weather conditions with a delay, which amounted to about 24 h at a depth of 25 cm, and as much as 48 h at a depth of 75 cm. A greater thickness of the active layer was found in the western part of the test field, in the vicinity of a tidal channel, and in the eastern part of the field, bordering on the foot of the Aavatsmarkbreen’s moraine. A considerable sloping of the land, combined with increased surface runoff and infiltration at the time of precipitation, makes the water penetrating into the active layer increase its temperature. This demonstrates that the local land forms (tidal channels and terminal moraines) have a substantial influence on the extent and rate of changes which occur in the active layer. |
format |
Article in Journal/Newspaper |
author |
Sobota, Ireneusz Dziembowski, Michał Grajewski, Tomasz Weckwerth, Piotr Nowak, Marcin |
author_facet |
Sobota, Ireneusz Dziembowski, Michał Grajewski, Tomasz Weckwerth, Piotr Nowak, Marcin |
author_sort |
Sobota, Ireneusz |
title |
Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
title_short |
Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
title_full |
Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
title_fullStr |
Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
title_full_unstemmed |
Short-term changes in thermal conditions and active layer thickness in the tundra of the Kaffiøyra region, NW Spitsbergen |
title_sort |
short-term changes in thermal conditions and active layer thickness in the tundra of the kaffiøyra region, nw spitsbergen |
publishDate |
2017 |
url |
http://repozytorium.umk.pl/handle/item/4175 https://doi.org/10.2478/11147 |
long_lat |
ENVELOPE(12.002,12.002,78.627,78.627) |
geographic |
Kaffiøyra Svalbard |
geographic_facet |
Kaffiøyra Svalbard |
genre |
Active layer thickness permafrost Svalbard Tundra Spitsbergen |
genre_facet |
Active layer thickness permafrost Svalbard Tundra Spitsbergen |
op_relation |
Bulletin of Geography. Physical Geography Series, No. 11, pp. 43-53 2300-8490 doi:10.2478/11147 http://repozytorium.umk.pl/handle/item/4175 |
op_rights |
http://creativecommons.org/licenses/by-nd/3.0/pl/ Attribution-NoDerivs 3.0 Poland info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.2478/11147 |
_version_ |
1766340406541287424 |