Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief
13 pages, 2 figures, 3 tables As part of the FRUELA experiment, 11 sediment cores were recovered from the Bellingshausen Sea, the western Bransfield and Gerlache Straits (Antarctic Peninsula) to determine the spatial distribution of organic carbon (OC), biogenic silica (BSi), and nitrogen (N) in the...
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Online Access: | http://hdl.handle.net/10261/135009 https://doi.org/10.1016/j.margeo.2004.06.003 |
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ftcsic:oai:digital.csic.es:10261/135009 2024-02-11T09:56:31+01:00 Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief Isla, Enrique Masqué, Pere Palanques, Albert Guillén, Jorge Puig, Pere Sanchez-Cabeza, Joan-Albert 2004-08 http://hdl.handle.net/10261/135009 https://doi.org/10.1016/j.margeo.2004.06.003 unknown Elsevier https://doi.org/10.1016/j.margeo.2004.06.003 Sí doi:10.1016/j.margeo.2004.06.003 issn: 0025-3227 Marine Geology 209(1-4): 265-277 (2004) http://hdl.handle.net/10261/135009 none Bransfield Strait Gerlache Strait Organic carbon Biogenic silica Sediment accumulation Submarine canyons artículo http://purl.org/coar/resource_type/c_6501 2004 ftcsic https://doi.org/10.1016/j.margeo.2004.06.003 2024-01-16T10:16:35Z 13 pages, 2 figures, 3 tables As part of the FRUELA experiment, 11 sediment cores were recovered from the Bellingshausen Sea, the western Bransfield and Gerlache Straits (Antarctic Peninsula) to determine the spatial distribution of organic carbon (OC), biogenic silica (BSi), and nitrogen (N) in the sediment under regions of known irregular primary production rates (PPRs). OC, BSi, and N contents ranged from 0.3% to 1.2%, from 5.7% to 20.4%, and from 0.03% to 0.17%, respectively. Apparent mean sediment accumulation rates (SARs) varied between 0.25 and 3.11 mm year-1 (220 and 1750 g m-2 year-1). Central Gerlache and western Bransfield Straits (the Orleans Canyon) had the highest biogenic constituents contents and sediment accumulation rates, whereas the northern coast off Snow Island (Bellingshausen Sea) showed the lowest values. Central Gerlache Strait, with the highest primary production rates in the study area, was the only region where the OC and BSi contents in the sediment corresponded to the photosynthetic activity in the euphotic zone above it. At the extremes of Gerlache Strait as in western Bransfield Strait, sediment focusing by currents enhanced by depressions in the sea floor contributed to develop regions with high biogenic constituent concentrations, whereas at the Bellingshausen Sea and western Gerlache Strait, winnowing by currents may drift away the biogenic material exported from the euphotic zone. Apparently, bottom relief and currents rather than solely depth determined the modern distribution and accumulation rates of biogenic particulate matter in the study area. Paleoceanographic interpretations of the sedimentary record from Antarctic marginal seas, such as Gerlache and Bransfield Straits, should consider that focusing due to lateral transport and sea floor morphology and the preferential degradation of OC relative to BSi may increase to an important degree the biogenic contents in the sediment, especially the opal. OC and BSi accumulation in Antarctic marginal seas could be as ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea Bransfield Strait Snow Island Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Gerlache ENVELOPE(99.033,99.033,-66.500,-66.500) Gerlache Strait ENVELOPE(-62.333,-62.333,-64.500,-64.500) Orleans ENVELOPE(-60.667,-60.667,-63.950,-63.950) Snow Island ENVELOPE(-61.383,-61.383,-62.776,-62.776) Marine Geology 209 1-4 265 277 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Bransfield Strait Gerlache Strait Organic carbon Biogenic silica Sediment accumulation Submarine canyons |
spellingShingle |
Bransfield Strait Gerlache Strait Organic carbon Biogenic silica Sediment accumulation Submarine canyons Isla, Enrique Masqué, Pere Palanques, Albert Guillén, Jorge Puig, Pere Sanchez-Cabeza, Joan-Albert Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
topic_facet |
Bransfield Strait Gerlache Strait Organic carbon Biogenic silica Sediment accumulation Submarine canyons |
description |
13 pages, 2 figures, 3 tables As part of the FRUELA experiment, 11 sediment cores were recovered from the Bellingshausen Sea, the western Bransfield and Gerlache Straits (Antarctic Peninsula) to determine the spatial distribution of organic carbon (OC), biogenic silica (BSi), and nitrogen (N) in the sediment under regions of known irregular primary production rates (PPRs). OC, BSi, and N contents ranged from 0.3% to 1.2%, from 5.7% to 20.4%, and from 0.03% to 0.17%, respectively. Apparent mean sediment accumulation rates (SARs) varied between 0.25 and 3.11 mm year-1 (220 and 1750 g m-2 year-1). Central Gerlache and western Bransfield Straits (the Orleans Canyon) had the highest biogenic constituents contents and sediment accumulation rates, whereas the northern coast off Snow Island (Bellingshausen Sea) showed the lowest values. Central Gerlache Strait, with the highest primary production rates in the study area, was the only region where the OC and BSi contents in the sediment corresponded to the photosynthetic activity in the euphotic zone above it. At the extremes of Gerlache Strait as in western Bransfield Strait, sediment focusing by currents enhanced by depressions in the sea floor contributed to develop regions with high biogenic constituent concentrations, whereas at the Bellingshausen Sea and western Gerlache Strait, winnowing by currents may drift away the biogenic material exported from the euphotic zone. Apparently, bottom relief and currents rather than solely depth determined the modern distribution and accumulation rates of biogenic particulate matter in the study area. Paleoceanographic interpretations of the sedimentary record from Antarctic marginal seas, such as Gerlache and Bransfield Straits, should consider that focusing due to lateral transport and sea floor morphology and the preferential degradation of OC relative to BSi may increase to an important degree the biogenic contents in the sediment, especially the opal. OC and BSi accumulation in Antarctic marginal seas could be as ... |
format |
Article in Journal/Newspaper |
author |
Isla, Enrique Masqué, Pere Palanques, Albert Guillén, Jorge Puig, Pere Sanchez-Cabeza, Joan-Albert |
author_facet |
Isla, Enrique Masqué, Pere Palanques, Albert Guillén, Jorge Puig, Pere Sanchez-Cabeza, Joan-Albert |
author_sort |
Isla, Enrique |
title |
Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
title_short |
Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
title_full |
Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
title_fullStr |
Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
title_full_unstemmed |
Sedimentation of biogenic constituents during the last century in western Bransfield and Gerlache Straits, Antarctica: a relation to currents, primary production, and sea floor relief |
title_sort |
sedimentation of biogenic constituents during the last century in western bransfield and gerlache straits, antarctica: a relation to currents, primary production, and sea floor relief |
publisher |
Elsevier |
publishDate |
2004 |
url |
http://hdl.handle.net/10261/135009 https://doi.org/10.1016/j.margeo.2004.06.003 |
long_lat |
ENVELOPE(99.033,99.033,-66.500,-66.500) ENVELOPE(-62.333,-62.333,-64.500,-64.500) ENVELOPE(-60.667,-60.667,-63.950,-63.950) ENVELOPE(-61.383,-61.383,-62.776,-62.776) |
geographic |
Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Gerlache Gerlache Strait Orleans Snow Island |
geographic_facet |
Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Gerlache Gerlache Strait Orleans Snow Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea Bransfield Strait Snow Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bellingshausen Sea Bransfield Strait Snow Island |
op_relation |
https://doi.org/10.1016/j.margeo.2004.06.003 Sí doi:10.1016/j.margeo.2004.06.003 issn: 0025-3227 Marine Geology 209(1-4): 265-277 (2004) http://hdl.handle.net/10261/135009 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.margeo.2004.06.003 |
container_title |
Marine Geology |
container_volume |
209 |
container_issue |
1-4 |
container_start_page |
265 |
op_container_end_page |
277 |
_version_ |
1790603756273926144 |