Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard
This paper presents the history and cryostratigraphy of the upper permafrost in the High‐Arctic Adventdalen Valley, central Svalbard. Nineteen frozen sediment cores, up to 10.7 m long, obtained at five periglacial landforms, were analysed for cryostructures, ice, carbon and solute contents, and grai...
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crwiley:10.1111/bor.12286 2024-06-23T07:44:58+00:00 Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard Cable, Stefanie Elberling, Bo Kroon, Aart Seventh Framework Programme Danmarks Grundforskningsfond 2017 http://dx.doi.org/10.1111/bor.12286 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12286 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12286 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 47, issue 2, page 423-442 ISSN 0300-9483 1502-3885 journal-article 2017 crwiley https://doi.org/10.1111/bor.12286 2024-06-13T04:21:31Z This paper presents the history and cryostratigraphy of the upper permafrost in the High‐Arctic Adventdalen Valley, central Svalbard. Nineteen frozen sediment cores, up to 10.7 m long, obtained at five periglacial landforms, were analysed for cryostructures, ice, carbon and solute contents, and grain‐size distribution, and were 14 C‐ and OSL ‐dated. Spatial variability in ice and carbon contents is closely related to the sedimentary history and mode of permafrost aggradation. In the valley bottom, saline epigenetic permafrost with pore ice down to depths of 10.7 m depth formed in deltaic sediments since the mid‐Holocene; cryopegs were encountered below 6 m. In the top 1 to 5 m, syngenetic and quasi‐syngenetic permafrost with microlenticular, lenticular, suspended and organic‐matrix cryostructures developed due to loess and alluvial sedimentation since the colder late Holocene, which resulted in the burial of organic material. At the transition between deltaic sediments and loess, massive ice bodies occurred. A pingo developed where the deltaic sediments reached the surface. On hillslopes, suspended cryostructure on solifluction sheets indicates quasi‐syngenetic permafrost aggradation; lobes, in contrast, were ice‐poor. Suspended cryostructure in eluvial deposits reflects epigenetic or quasi‐syngenetic permafrost formation on a weathered bedrock plateau. Landform‐scale spatial variations in ground ice and carbon relate to variations in slope, sedimentation rate, moisture conditions and stratigraphy. Although the study reveals close links between Holocene landscape evolution and permafrost history, our results emphasize a large uncertainty in using terrain surface indicators to infer ground‐ice contents and upscale from core to landform scale in mountainous permafrost landscapes. Article in Journal/Newspaper Adventdalen Arctic Ice permafrost Svalbard Wiley Online Library Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Svalbard Boreas 47 2 423 442 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
This paper presents the history and cryostratigraphy of the upper permafrost in the High‐Arctic Adventdalen Valley, central Svalbard. Nineteen frozen sediment cores, up to 10.7 m long, obtained at five periglacial landforms, were analysed for cryostructures, ice, carbon and solute contents, and grain‐size distribution, and were 14 C‐ and OSL ‐dated. Spatial variability in ice and carbon contents is closely related to the sedimentary history and mode of permafrost aggradation. In the valley bottom, saline epigenetic permafrost with pore ice down to depths of 10.7 m depth formed in deltaic sediments since the mid‐Holocene; cryopegs were encountered below 6 m. In the top 1 to 5 m, syngenetic and quasi‐syngenetic permafrost with microlenticular, lenticular, suspended and organic‐matrix cryostructures developed due to loess and alluvial sedimentation since the colder late Holocene, which resulted in the burial of organic material. At the transition between deltaic sediments and loess, massive ice bodies occurred. A pingo developed where the deltaic sediments reached the surface. On hillslopes, suspended cryostructure on solifluction sheets indicates quasi‐syngenetic permafrost aggradation; lobes, in contrast, were ice‐poor. Suspended cryostructure in eluvial deposits reflects epigenetic or quasi‐syngenetic permafrost formation on a weathered bedrock plateau. Landform‐scale spatial variations in ground ice and carbon relate to variations in slope, sedimentation rate, moisture conditions and stratigraphy. Although the study reveals close links between Holocene landscape evolution and permafrost history, our results emphasize a large uncertainty in using terrain surface indicators to infer ground‐ice contents and upscale from core to landform scale in mountainous permafrost landscapes. |
author2 |
Seventh Framework Programme Danmarks Grundforskningsfond |
format |
Article in Journal/Newspaper |
author |
Cable, Stefanie Elberling, Bo Kroon, Aart |
spellingShingle |
Cable, Stefanie Elberling, Bo Kroon, Aart Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
author_facet |
Cable, Stefanie Elberling, Bo Kroon, Aart |
author_sort |
Cable, Stefanie |
title |
Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
title_short |
Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
title_full |
Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
title_fullStr |
Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
title_full_unstemmed |
Holocene permafrost history and cryostratigraphy in the High‐Arctic Adventdalen Valley, central Svalbard |
title_sort |
holocene permafrost history and cryostratigraphy in the high‐arctic adventdalen valley, central svalbard |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/bor.12286 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12286 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12286 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Arctic Svalbard |
geographic_facet |
Adventdalen Arctic Svalbard |
genre |
Adventdalen Arctic Ice permafrost Svalbard |
genre_facet |
Adventdalen Arctic Ice permafrost Svalbard |
op_source |
Boreas volume 47, issue 2, page 423-442 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12286 |
container_title |
Boreas |
container_volume |
47 |
container_issue |
2 |
container_start_page |
423 |
op_container_end_page |
442 |
_version_ |
1802642854287245312 |