Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard
The recession of the Hornbreen-Hambergbreen glaciers (Hornsund, Svalbard) will lead to the formation of a strait between the Greenland and Barents Seas within a few decades. We provide evidence for the earlier existence of this strait, in the Early–Middle Holocene and presumably since 1.3 ka cal. BP...
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Online Access: | http://dx.doi.org/10.1177/09596836221088232 http://journals.sagepub.com/doi/pdf/10.1177/09596836221088232 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221088232 |
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crsagepubl:10.1177/09596836221088232 2024-04-07T07:52:36+00:00 Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard Osika, Aleksandra Jania, Jacek Szafraniec, Joanna Ewa 2022 http://dx.doi.org/10.1177/09596836221088232 http://journals.sagepub.com/doi/pdf/10.1177/09596836221088232 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221088232 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 32, issue 7, page 664-679 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2022 crsagepubl https://doi.org/10.1177/09596836221088232 2024-03-08T03:20:34Z The recession of the Hornbreen-Hambergbreen glaciers (Hornsund, Svalbard) will lead to the formation of a strait between the Greenland and Barents Seas within a few decades. We provide evidence for the earlier existence of this strait, in the Early–Middle Holocene and presumably since 1.3 ka cal. BP until glacier advance 0.7 ± 0.3 ka or earlier. Radiocarbon dating of mollusc shells from the ground moraines in the Hornbreen forefield indicate the existence of the marine environment at the contemporary glacierized head of Hornsund since 10.9 ka cal. BP or earlier due to glacier retreat. The gap in the radiocarbon dates between 3.9 and 1.3 ka cal. BP and the published results of 10 Be exposure dating on Treskelen suggest the strait’s closure after glacier advance in the Neoglacial. Subsequent re-opening occurred around 1.3 ka cal. BP, but according to 10 Be dates from Treskelen, the strait has again been closed since ca. 0.7 ± 0.3 ka or earlier. The oldest known surge of Hornbreen occurred around 1900. Analysis of Landsat satellite images, morphometric indicators characterizing the glacier frontal zones and previous studies indicate one surge of Hambergbreen (1957–1968) and five re-advances of Hornbreen in the 20th century (after 1936, between 1958 and 1962, in 1986–1990, 1998–1999, 2011). While the warmer Holocene intervals might be a benchmark for the effects of future climate change, glacier dynamics in post-Little Ice Age climate warming seems to be an analogue of glacier retreats and re-advances in the earlier periods of the Holocene. Article in Journal/Newspaper glacier glacier Greenland Hornsund Svalbard SAGE Publications Svalbard Greenland Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Hornbreen ENVELOPE(16.689,16.689,77.066,77.066) Hambergbreen ENVELOPE(17.098,17.098,77.050,77.050) Treskelen ENVELOPE(16.234,16.234,77.013,77.013) The Holocene 32 7 664 679 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Osika, Aleksandra Jania, Jacek Szafraniec, Joanna Ewa Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
The recession of the Hornbreen-Hambergbreen glaciers (Hornsund, Svalbard) will lead to the formation of a strait between the Greenland and Barents Seas within a few decades. We provide evidence for the earlier existence of this strait, in the Early–Middle Holocene and presumably since 1.3 ka cal. BP until glacier advance 0.7 ± 0.3 ka or earlier. Radiocarbon dating of mollusc shells from the ground moraines in the Hornbreen forefield indicate the existence of the marine environment at the contemporary glacierized head of Hornsund since 10.9 ka cal. BP or earlier due to glacier retreat. The gap in the radiocarbon dates between 3.9 and 1.3 ka cal. BP and the published results of 10 Be exposure dating on Treskelen suggest the strait’s closure after glacier advance in the Neoglacial. Subsequent re-opening occurred around 1.3 ka cal. BP, but according to 10 Be dates from Treskelen, the strait has again been closed since ca. 0.7 ± 0.3 ka or earlier. The oldest known surge of Hornbreen occurred around 1900. Analysis of Landsat satellite images, morphometric indicators characterizing the glacier frontal zones and previous studies indicate one surge of Hambergbreen (1957–1968) and five re-advances of Hornbreen in the 20th century (after 1936, between 1958 and 1962, in 1986–1990, 1998–1999, 2011). While the warmer Holocene intervals might be a benchmark for the effects of future climate change, glacier dynamics in post-Little Ice Age climate warming seems to be an analogue of glacier retreats and re-advances in the earlier periods of the Holocene. |
format |
Article in Journal/Newspaper |
author |
Osika, Aleksandra Jania, Jacek Szafraniec, Joanna Ewa |
author_facet |
Osika, Aleksandra Jania, Jacek Szafraniec, Joanna Ewa |
author_sort |
Osika, Aleksandra |
title |
Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
title_short |
Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
title_full |
Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
title_fullStr |
Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
title_full_unstemmed |
Holocene ice-free strait followed by dynamic Neoglacial fluctuations: Hornsund, Svalbard |
title_sort |
holocene ice-free strait followed by dynamic neoglacial fluctuations: hornsund, svalbard |
publisher |
SAGE Publications |
publishDate |
2022 |
url |
http://dx.doi.org/10.1177/09596836221088232 http://journals.sagepub.com/doi/pdf/10.1177/09596836221088232 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221088232 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(16.689,16.689,77.066,77.066) ENVELOPE(17.098,17.098,77.050,77.050) ENVELOPE(16.234,16.234,77.013,77.013) |
geographic |
Svalbard Greenland Hornsund Hornbreen Hambergbreen Treskelen |
geographic_facet |
Svalbard Greenland Hornsund Hornbreen Hambergbreen Treskelen |
genre |
glacier glacier Greenland Hornsund Svalbard |
genre_facet |
glacier glacier Greenland Hornsund Svalbard |
op_source |
The Holocene volume 32, issue 7, page 664-679 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/09596836221088232 |
container_title |
The Holocene |
container_volume |
32 |
container_issue |
7 |
container_start_page |
664 |
op_container_end_page |
679 |
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1795668023851352064 |