Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas
Geophysical and lithological data provide crucial information for the understanding of glacial history in Arctic Svalbard. In this study, we reconstructed the glacier-induced depositional environments of Little Storfjorden and its tributary, Hambergbukta, over the last 13 ka to better understand the...
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ftdoajarticles:oai:doaj.org/article:3ca8ce24824247bdadd7be92d15abb27 2023-05-15T15:00:44+02:00 Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas Young Jin Joe Kwangchul Jang Matthias Forwick Jan Sverre Laberg Gee Soo Kong Moo-Hee Kang Seok-Hoon Yoon Seung-Il Nam 2022-11-01T00:00:00Z https://doi.org/10.3389/feart.2022.1017594 https://doaj.org/article/3ca8ce24824247bdadd7be92d15abb27 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.1017594/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.1017594 https://doaj.org/article/3ca8ce24824247bdadd7be92d15abb27 Frontiers in Earth Science, Vol 10 (2022) Little Storfjorden Hambergbukta Younger Dryas Little Ice Age grounding zone wedge terminal moraine Science Q article 2022 ftdoajarticles https://doi.org/10.3389/feart.2022.1017594 2022-12-30T22:49:55Z Geophysical and lithological data provide crucial information for the understanding of glacial history in Arctic Svalbard. In this study, we reconstructed the glacier-induced depositional environments of Little Storfjorden and its tributary, Hambergbukta, over the last 13 ka to better understand the glacial history of southeastern Svalbard. The combined uses of swath-bathymetry, high-resolution seismic stratigraphy, and multiple-proxy measurements of sediment cores allowed us to define five steps of glacier-induced depositional environments: 1) deposition of massive, semi-consolidated gravelly sandy mud (Facies 1) during re-advance or still-stand of the marine-based glaciers/ice streams in Little Storfjorden during Younger Dryas (13–12 ka); 2) deposition of massive mud to gravelly sandy mud (Facies 2A and B) during glacial retreat until the earliest Holocene (12–10.1 ka); 3) sediment winnowing by enhanced bottom currents during the early to middle Holocene (10.1–3.7 ka); 4) deposition of bioturbated sandy mud (Facies 3) with high productivity under seasonal sea ice conditions during the late Holocene (3.7–0.7 ka); and 5) deposition of (slightly) bioturbated sandy to gravelly mud (Facies 4) affected by glacier surges since Little Ice Age (LIA) (Facies 4). In addition to seismic stratigraphy, depositional patterns of IRD in Little Storfjorden indicate that the glacier surges in Hambergbukta occurred only after ∼0.7 ka. This suggests that the terminal moraine complex (TMC) represents the maximum extent of the LIA surges, which argues against the recent inference for the TMC formation during pre-LIA. This study shows the importance of multiple parameters to better understand the current behavior of tidewater glaciers in the Svalbard fjords in response to rapid climate change. Article in Journal/Newspaper Arctic Climate change glacier Sea ice Storfjorden Svalbard Tidewater Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Little Storfjorden Hambergbukta Younger Dryas Little Ice Age grounding zone wedge terminal moraine Science Q |
spellingShingle |
Little Storfjorden Hambergbukta Younger Dryas Little Ice Age grounding zone wedge terminal moraine Science Q Young Jin Joe Kwangchul Jang Matthias Forwick Jan Sverre Laberg Gee Soo Kong Moo-Hee Kang Seok-Hoon Yoon Seung-Il Nam Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
topic_facet |
Little Storfjorden Hambergbukta Younger Dryas Little Ice Age grounding zone wedge terminal moraine Science Q |
description |
Geophysical and lithological data provide crucial information for the understanding of glacial history in Arctic Svalbard. In this study, we reconstructed the glacier-induced depositional environments of Little Storfjorden and its tributary, Hambergbukta, over the last 13 ka to better understand the glacial history of southeastern Svalbard. The combined uses of swath-bathymetry, high-resolution seismic stratigraphy, and multiple-proxy measurements of sediment cores allowed us to define five steps of glacier-induced depositional environments: 1) deposition of massive, semi-consolidated gravelly sandy mud (Facies 1) during re-advance or still-stand of the marine-based glaciers/ice streams in Little Storfjorden during Younger Dryas (13–12 ka); 2) deposition of massive mud to gravelly sandy mud (Facies 2A and B) during glacial retreat until the earliest Holocene (12–10.1 ka); 3) sediment winnowing by enhanced bottom currents during the early to middle Holocene (10.1–3.7 ka); 4) deposition of bioturbated sandy mud (Facies 3) with high productivity under seasonal sea ice conditions during the late Holocene (3.7–0.7 ka); and 5) deposition of (slightly) bioturbated sandy to gravelly mud (Facies 4) affected by glacier surges since Little Ice Age (LIA) (Facies 4). In addition to seismic stratigraphy, depositional patterns of IRD in Little Storfjorden indicate that the glacier surges in Hambergbukta occurred only after ∼0.7 ka. This suggests that the terminal moraine complex (TMC) represents the maximum extent of the LIA surges, which argues against the recent inference for the TMC formation during pre-LIA. This study shows the importance of multiple parameters to better understand the current behavior of tidewater glaciers in the Svalbard fjords in response to rapid climate change. |
format |
Article in Journal/Newspaper |
author |
Young Jin Joe Kwangchul Jang Matthias Forwick Jan Sverre Laberg Gee Soo Kong Moo-Hee Kang Seok-Hoon Yoon Seung-Il Nam |
author_facet |
Young Jin Joe Kwangchul Jang Matthias Forwick Jan Sverre Laberg Gee Soo Kong Moo-Hee Kang Seok-Hoon Yoon Seung-Il Nam |
author_sort |
Young Jin Joe |
title |
Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
title_short |
Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
title_full |
Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
title_fullStr |
Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
title_full_unstemmed |
Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
title_sort |
glacial history and depositional environments in little storfjorden and hambergbukta of arctic svalbard since the younger dryas |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.1017594 https://doaj.org/article/3ca8ce24824247bdadd7be92d15abb27 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Climate change glacier Sea ice Storfjorden Svalbard Tidewater |
genre_facet |
Arctic Climate change glacier Sea ice Storfjorden Svalbard Tidewater |
op_source |
Frontiers in Earth Science, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.1017594/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.1017594 https://doaj.org/article/3ca8ce24824247bdadd7be92d15abb27 |
op_doi |
https://doi.org/10.3389/feart.2022.1017594 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1766332804862312448 |