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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crfrontiers:10.3389/feart.2022.1017594 2024-06-23T07:50:15+00:00 Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas Joe, Young Jin Jang, Kwangchul Forwick, Matthias Laberg, Jan Sverre Kong, Gee Soo Kang, Moo-Hee Yoon, Seok-Hoon Nam, Seung-Il National Research Foundation of Korea Ministry of Science and ICT, South Korea 2022 http://dx.doi.org/10.3389/feart.2022.1017594 https://www.frontiersin.org/articles/10.3389/feart.2022.1017594/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 10 ISSN 2296-6463 journal-article 2022 crfrontiers https://doi.org/10.3389/feart.2022.1017594 2024-06-11T04:09:05Z 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 Frontiers (Publisher) Arctic Svalbard Frontiers in Earth Science 10 |
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Frontiers (Publisher) |
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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. |
author2 |
National Research Foundation of Korea Ministry of Science and ICT, South Korea |
format |
Article in Journal/Newspaper |
author |
Joe, Young Jin Jang, Kwangchul Forwick, Matthias Laberg, Jan Sverre Kong, Gee Soo Kang, Moo-Hee Yoon, Seok-Hoon Nam, Seung-Il |
spellingShingle |
Joe, Young Jin Jang, Kwangchul Forwick, Matthias Laberg, Jan Sverre Kong, Gee Soo Kang, Moo-Hee Yoon, Seok-Hoon Nam, Seung-Il Glacial history and depositional environments in little Storfjorden and Hambergbukta of Arctic Svalbard since the younger dryas |
author_facet |
Joe, Young Jin Jang, Kwangchul Forwick, Matthias Laberg, Jan Sverre Kong, Gee Soo Kang, Moo-Hee Yoon, Seok-Hoon Nam, Seung-Il |
author_sort |
Joe, Young Jin |
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 SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/feart.2022.1017594 https://www.frontiersin.org/articles/10.3389/feart.2022.1017594/full |
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 volume 10 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.1017594 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1802641123434299392 |