Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard
High-resolution field data for the period 2000–2014 consisting of active layer and permafrost temperature, active layer soil moisture, and thaw depth progression from the UNISCALM research site in Adventdalen, Svalbard, is combined with a physically based coupled cryotic and hydrogeological model to...
Published in: | The Cryosphere |
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010620 2023-05-15T13:02:51+02:00 Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard Schuh, Carina Frampton, Andrew Christiansen, Hanne Hvidtfeldt 2017-02 electronic https://doi.org/10.5194/tc-11-635-2017 https://noa.gwlb.de/receive/cop_mods_00010620 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010577/tc-11-635-2017.pdf https://tc.copernicus.org/articles/11/635/2017/tc-11-635-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-635-2017 https://noa.gwlb.de/receive/cop_mods_00010620 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010577/tc-11-635-2017.pdf https://tc.copernicus.org/articles/11/635/2017/tc-11-635-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-635-2017 2022-02-08T22:56:57Z High-resolution field data for the period 2000–2014 consisting of active layer and permafrost temperature, active layer soil moisture, and thaw depth progression from the UNISCALM research site in Adventdalen, Svalbard, is combined with a physically based coupled cryotic and hydrogeological model to investigate active layer dynamics. The site is a loess-covered river terrace characterized by dry conditions with little to no summer infiltration and an unsaturated active layer. A range of soil moisture characteristic curves consistent with loess sediments is considered and their effects on ice and moisture redistribution, heat flux, energy storage through latent heat transfer, and active layer thickness is investigated and quantified based on hydro-climatic site conditions. Results show that soil moisture retention characteristics exhibit notable control on ice distribution and circulation within the active layer through cryosuction and are subject to seasonal variability and site-specific surface temperature variations. The retention characteristics also impact unfrozen water and ice content in the permafrost. Although these effects lead to differences in thaw progression rates, the resulting inter-annual variability in active layer thickness is not large. Field data analysis reveals that variations in summer degree days do not notably affect the active layer thaw depths; instead, a cumulative winter degree day index is found to more significantly control inter-annual active layer thickness variation at this site. A tendency of increasing winter temperatures is found to cause a general warming of the subsurface down to 10 m depth (0.05 to 0.26 °C yr−1, observed and modelled) including an increasing active layer thickness (0.8 cm yr−1, observed and 0.3 to 0.8 cm yr−1, modelled) during the 14-year study period. Article in Journal/Newspaper Active layer temperature Active layer thickness Adventdalen Ice permafrost Svalbard The Cryosphere Niedersächsisches Online-Archiv NOA Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Svalbard The Cryosphere 11 1 635 651 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Schuh, Carina Frampton, Andrew Christiansen, Hanne Hvidtfeldt Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
topic_facet |
article Verlagsveröffentlichung |
description |
High-resolution field data for the period 2000–2014 consisting of active layer and permafrost temperature, active layer soil moisture, and thaw depth progression from the UNISCALM research site in Adventdalen, Svalbard, is combined with a physically based coupled cryotic and hydrogeological model to investigate active layer dynamics. The site is a loess-covered river terrace characterized by dry conditions with little to no summer infiltration and an unsaturated active layer. A range of soil moisture characteristic curves consistent with loess sediments is considered and their effects on ice and moisture redistribution, heat flux, energy storage through latent heat transfer, and active layer thickness is investigated and quantified based on hydro-climatic site conditions. Results show that soil moisture retention characteristics exhibit notable control on ice distribution and circulation within the active layer through cryosuction and are subject to seasonal variability and site-specific surface temperature variations. The retention characteristics also impact unfrozen water and ice content in the permafrost. Although these effects lead to differences in thaw progression rates, the resulting inter-annual variability in active layer thickness is not large. Field data analysis reveals that variations in summer degree days do not notably affect the active layer thaw depths; instead, a cumulative winter degree day index is found to more significantly control inter-annual active layer thickness variation at this site. A tendency of increasing winter temperatures is found to cause a general warming of the subsurface down to 10 m depth (0.05 to 0.26 °C yr−1, observed and modelled) including an increasing active layer thickness (0.8 cm yr−1, observed and 0.3 to 0.8 cm yr−1, modelled) during the 14-year study period. |
format |
Article in Journal/Newspaper |
author |
Schuh, Carina Frampton, Andrew Christiansen, Hanne Hvidtfeldt |
author_facet |
Schuh, Carina Frampton, Andrew Christiansen, Hanne Hvidtfeldt |
author_sort |
Schuh, Carina |
title |
Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
title_short |
Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
title_full |
Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
title_fullStr |
Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
title_full_unstemmed |
Soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in Adventdalen, Svalbard |
title_sort |
soil moisture redistribution and its effect on inter-annual active layer temperature and thickness variations in a dry loess terrace in adventdalen, svalbard |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-635-2017 https://noa.gwlb.de/receive/cop_mods_00010620 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010577/tc-11-635-2017.pdf https://tc.copernicus.org/articles/11/635/2017/tc-11-635-2017.pdf |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Svalbard |
geographic_facet |
Adventdalen Svalbard |
genre |
Active layer temperature Active layer thickness Adventdalen Ice permafrost Svalbard The Cryosphere |
genre_facet |
Active layer temperature Active layer thickness Adventdalen Ice permafrost Svalbard The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-635-2017 https://noa.gwlb.de/receive/cop_mods_00010620 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010577/tc-11-635-2017.pdf https://tc.copernicus.org/articles/11/635/2017/tc-11-635-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-635-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
1 |
container_start_page |
635 |
op_container_end_page |
651 |
_version_ |
1766322428894511104 |