Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean
Understanding present-day sediment provenance and transport processes is crucial for studies about the dynamics of ocean circulation, as well as for paleoclimate reconstructions in the Drake Passage (DP), a key area for Earth's global oceanic circulation and climate during past and future. Base...
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ftawi:oai:epic.awi.de:50989 2024-09-09T19:05:02+00:00 Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean Wu, Shuzhuang Kuhn, Gerhard Diekmann, Bernhard Lembke-Jene, Lester Tiedemann, Ralf Zheng, Xufeng Ehrhardt, Sophie Arz, Helge W. Lamy, Frank 2019 https://epic.awi.de/id/eprint/50989/ https://doi.org/10.1016/j.dsr.2019.103135 https://hdl.handle.net/10013/epic.3cf8ae28-eebd-4995-9507-34edda9450ff unknown Wu, S. , Kuhn, G. orcid:0000-0001-6069-7485 , Diekmann, B. orcid:0000-0001-5129-3649 , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Tiedemann, R. orcid:0000-0001-7211-8049 , Zheng, X. , Ehrhardt, S. , Arz, H. W. and Lamy, F. orcid:0000-0001-5952-1765 (2019) Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean , Deep Sea Research Part I: Oceanographic Research Papers, 154 , p. 103135 . doi:10.1016/j.dsr.2019.103135 <https://doi.org/10.1016/j.dsr.2019.103135> , hdl:10013/epic.3cf8ae28-eebd-4995-9507-34edda9450ff EPIC3Deep Sea Research Part I: Oceanographic Research Papers, 154, pp. 103135, ISSN: 09670637 Article isiRev 2019 ftawi https://doi.org/10.1016/j.dsr.2019.103135 2024-06-24T04:23:24Z Understanding present-day sediment provenance and transport processes is crucial for studies about the dynamics of ocean circulation, as well as for paleoclimate reconstructions in the Drake Passage (DP), a key area for Earth's global oceanic circulation and climate during past and future. Based on a comprehensive set of surface sediment samples, we used spatial variations in grain-size distribution, bulk sediment mineralogy, silt and clay mineralogy across the entire DP region to elucidate the terrigenous sources and transport mechanisms. The statistical evaluation of these data identifies southern Patagonia (carbonate, illite, chlorite, feldspar and quartz) and the Antarctic Peninsula (chlorite, smectite, and amphibole) as the main sources for terrigenous sediments in the DP region. Different current systems are transporting the sediment material. Here, we provide a new, robust flow speed calibration for silt grain-sizes to enable the reconstruction of Antarctic Circumpolar Current (ACC) dynamics in the DP sector of the Southern Ocean. We correlated the sortable silt mean grain-size records of surface sediments with adjacent long-term current meter data. A clear bottom current speed pattern shows the variability of the ACC in the DP responding to the dynamics of ocean fronts, in agreement with modern observation. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Drake Passage Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula Drake Passage Patagonia Southern Ocean The Antarctic Deep Sea Research Part I: Oceanographic Research Papers 154 103135 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Understanding present-day sediment provenance and transport processes is crucial for studies about the dynamics of ocean circulation, as well as for paleoclimate reconstructions in the Drake Passage (DP), a key area for Earth's global oceanic circulation and climate during past and future. Based on a comprehensive set of surface sediment samples, we used spatial variations in grain-size distribution, bulk sediment mineralogy, silt and clay mineralogy across the entire DP region to elucidate the terrigenous sources and transport mechanisms. The statistical evaluation of these data identifies southern Patagonia (carbonate, illite, chlorite, feldspar and quartz) and the Antarctic Peninsula (chlorite, smectite, and amphibole) as the main sources for terrigenous sediments in the DP region. Different current systems are transporting the sediment material. Here, we provide a new, robust flow speed calibration for silt grain-sizes to enable the reconstruction of Antarctic Circumpolar Current (ACC) dynamics in the DP sector of the Southern Ocean. We correlated the sortable silt mean grain-size records of surface sediments with adjacent long-term current meter data. A clear bottom current speed pattern shows the variability of the ACC in the DP responding to the dynamics of ocean fronts, in agreement with modern observation. |
format |
Article in Journal/Newspaper |
author |
Wu, Shuzhuang Kuhn, Gerhard Diekmann, Bernhard Lembke-Jene, Lester Tiedemann, Ralf Zheng, Xufeng Ehrhardt, Sophie Arz, Helge W. Lamy, Frank |
spellingShingle |
Wu, Shuzhuang Kuhn, Gerhard Diekmann, Bernhard Lembke-Jene, Lester Tiedemann, Ralf Zheng, Xufeng Ehrhardt, Sophie Arz, Helge W. Lamy, Frank Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
author_facet |
Wu, Shuzhuang Kuhn, Gerhard Diekmann, Bernhard Lembke-Jene, Lester Tiedemann, Ralf Zheng, Xufeng Ehrhardt, Sophie Arz, Helge W. Lamy, Frank |
author_sort |
Wu, Shuzhuang |
title |
Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
title_short |
Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
title_full |
Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
title_fullStr |
Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
title_full_unstemmed |
Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean |
title_sort |
surface sediment characteristics related to provenance and ocean circulation in the drake passage sector of the southern ocean |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/50989/ https://doi.org/10.1016/j.dsr.2019.103135 https://hdl.handle.net/10013/epic.3cf8ae28-eebd-4995-9507-34edda9450ff |
geographic |
Antarctic Antarctic Peninsula Drake Passage Patagonia Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Drake Passage Patagonia Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Drake Passage Southern Ocean |
op_source |
EPIC3Deep Sea Research Part I: Oceanographic Research Papers, 154, pp. 103135, ISSN: 09670637 |
op_relation |
Wu, S. , Kuhn, G. orcid:0000-0001-6069-7485 , Diekmann, B. orcid:0000-0001-5129-3649 , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Tiedemann, R. orcid:0000-0001-7211-8049 , Zheng, X. , Ehrhardt, S. , Arz, H. W. and Lamy, F. orcid:0000-0001-5952-1765 (2019) Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean , Deep Sea Research Part I: Oceanographic Research Papers, 154 , p. 103135 . doi:10.1016/j.dsr.2019.103135 <https://doi.org/10.1016/j.dsr.2019.103135> , hdl:10013/epic.3cf8ae28-eebd-4995-9507-34edda9450ff |
op_doi |
https://doi.org/10.1016/j.dsr.2019.103135 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
154 |
container_start_page |
103135 |
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1809819019112349696 |