Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard
The deglaciation history and Holocene environmental evolution of northern Wijdefjorden, Svalbard, are reconstructed using sediment cores and acoustic data (multibeam swath bathymetry and sub‐bottom profiler data). Results reveal that the fjord mouth was deglaciated prior to 14.5±0.3 cal. ka BP and d...
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crwiley:10.1111/bor.12435 2024-06-23T07:53:04+00:00 Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard Allaart, Lis Müller, Juliane Schomacker, Anders Rydningen, Tom A. Håkansson, Lena Kjellman, Sofia E. Mollenhauer, Gesine Forwick, Matthias Svalbard Miljøvernfond Helmholtz Research Grant 2020 http://dx.doi.org/10.1111/bor.12435 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12435 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12435 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12435 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 49, issue 3, page 417-437 ISSN 0300-9483 1502-3885 journal-article 2020 crwiley https://doi.org/10.1111/bor.12435 2024-05-31T08:14:13Z The deglaciation history and Holocene environmental evolution of northern Wijdefjorden, Svalbard, are reconstructed using sediment cores and acoustic data (multibeam swath bathymetry and sub‐bottom profiler data). Results reveal that the fjord mouth was deglaciated prior to 14.5±0.3 cal. ka BP and deglaciation occurred stepwise. Biomarker analyses show rapid variations in water temperature and sea ice cover during the deglaciation, and cold conditions during the Younger Dryas, followed by minimum sea ice cover throughout the Early Holocene, until c . 7 cal. ka BP . Most of the glaciers in Wijdefjorden had retreated onto land by c . 7.6±0.2 cal. ka BP . Subsequently, the sea‐ice extent increased and remained high throughout the last part of the Holocene. We interpret a high Late Holocene sediment accumulation rate in the northernmost core to reflect increased sediment flux to the site from the outlet of the adjacent lake Femmilsjøen, related to glacier growth in the Femmilsjøen catchment area. Furthermore, increased sea ice cover, lower water temperatures and the re‐occurrence of ice‐rafted debris indicate increased local glacier activity and overall cooler conditions in Wijdefjorden after c . 0.5 cal. ka BP . We summarize our findings in a conceptual model for the depositional environment in northern Wijdefjorden from the Late Weichselian until present. Article in Journal/Newspaper glacier Sea ice Svalbard Wijdefjord* Wiley Online Library Femmilsjøen ENVELOPE(15.851,15.851,79.788,79.788) Svalbard Wijdefjorden ENVELOPE(15.569,15.569,79.543,79.543) Boreas 49 3 417 437 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The deglaciation history and Holocene environmental evolution of northern Wijdefjorden, Svalbard, are reconstructed using sediment cores and acoustic data (multibeam swath bathymetry and sub‐bottom profiler data). Results reveal that the fjord mouth was deglaciated prior to 14.5±0.3 cal. ka BP and deglaciation occurred stepwise. Biomarker analyses show rapid variations in water temperature and sea ice cover during the deglaciation, and cold conditions during the Younger Dryas, followed by minimum sea ice cover throughout the Early Holocene, until c . 7 cal. ka BP . Most of the glaciers in Wijdefjorden had retreated onto land by c . 7.6±0.2 cal. ka BP . Subsequently, the sea‐ice extent increased and remained high throughout the last part of the Holocene. We interpret a high Late Holocene sediment accumulation rate in the northernmost core to reflect increased sediment flux to the site from the outlet of the adjacent lake Femmilsjøen, related to glacier growth in the Femmilsjøen catchment area. Furthermore, increased sea ice cover, lower water temperatures and the re‐occurrence of ice‐rafted debris indicate increased local glacier activity and overall cooler conditions in Wijdefjorden after c . 0.5 cal. ka BP . We summarize our findings in a conceptual model for the depositional environment in northern Wijdefjorden from the Late Weichselian until present. |
author2 |
Svalbard Miljøvernfond Helmholtz Research Grant |
format |
Article in Journal/Newspaper |
author |
Allaart, Lis Müller, Juliane Schomacker, Anders Rydningen, Tom A. Håkansson, Lena Kjellman, Sofia E. Mollenhauer, Gesine Forwick, Matthias |
spellingShingle |
Allaart, Lis Müller, Juliane Schomacker, Anders Rydningen, Tom A. Håkansson, Lena Kjellman, Sofia E. Mollenhauer, Gesine Forwick, Matthias Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
author_facet |
Allaart, Lis Müller, Juliane Schomacker, Anders Rydningen, Tom A. Håkansson, Lena Kjellman, Sofia E. Mollenhauer, Gesine Forwick, Matthias |
author_sort |
Allaart, Lis |
title |
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
title_short |
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
title_full |
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
title_fullStr |
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
title_full_unstemmed |
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard |
title_sort |
late quaternary glacier and sea‐ice history of northern wijdefjorden, svalbard |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/bor.12435 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12435 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12435 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12435 |
long_lat |
ENVELOPE(15.851,15.851,79.788,79.788) ENVELOPE(15.569,15.569,79.543,79.543) |
geographic |
Femmilsjøen Svalbard Wijdefjorden |
geographic_facet |
Femmilsjøen Svalbard Wijdefjorden |
genre |
glacier Sea ice Svalbard Wijdefjord* |
genre_facet |
glacier Sea ice Svalbard Wijdefjord* |
op_source |
Boreas volume 49, issue 3, page 417-437 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12435 |
container_title |
Boreas |
container_volume |
49 |
container_issue |
3 |
container_start_page |
417 |
op_container_end_page |
437 |
_version_ |
1802644556610535424 |