Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic
High-resolution records of the natural radionuclide 230Th were measured in sediments from the eastern Atlantic sector of the Antarctic circumpolar current to obtain a detailed reconstruction of the sedimentation history of this key area for global climate change during the late Quaternary. High-reso...
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1996
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.711823 2023-05-15T13:42:09+02:00 Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Kuhn, Gerhard Mangini, Augusto MEDIAN LATITUDE: -49.387066 * MEDIAN LONGITUDE: 6.341832 * SOUTH-BOUND LATITUDE: -55.458333 * WEST-BOUND LONGITUDE: 1.163330 * NORTH-BOUND LATITUDE: -43.218167 * EAST-BOUND LONGITUDE: 11.759000 * DATE/TIME START: 1989-11-06T15:58:00 * DATE/TIME END: 1991-04-03T18:40:00 1996-01-27 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.711823 https://doi.org/10.1594/PANGAEA.711823 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.711823 https://doi.org/10.1594/PANGAEA.711823 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Kuhn, Gerhard; Mangini, Augusto (1996): Late Quaternary sediment dating and quantification of lateral sediment redistribution applying 230Th-excess, a study of the eastern Atlantic sector of the Southern Ocean. Geologische Rundschau, 85(3), 554-566, https://doi.org/10.1007/BF02369010 Agulhas Basin ANT-IX/4 ANT-VIII/3 Atlantic Ridge AWI_MarGeoChem AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Marine Geochemistry @ AWI Meteor Rise MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS16 PS16/278 PS16/284 PS16/311 PS16/321 PS1754-1 PS1754-2 PS1756-5 PS1756-6 PS1768-1 PS1768-8 PS1772-6 PS1772-8 PS18 PS18/238 PS2082-1 PS2082-3 Shona Ridge SL Dataset 1996 ftpangaea https://doi.org/10.1594/PANGAEA.711823 https://doi.org/10.1007/BF02369010 2023-01-20T07:31:20Z High-resolution records of the natural radionuclide 230Th were measured in sediments from the eastern Atlantic sector of the Antarctic circumpolar current to obtain a detailed reconstruction of the sedimentation history of this key area for global climate change during the late Quaternary. High-resolution dating rests on the assumption that the 230Thex flux to the sediments is constant. Short periods of drastically increased sediment accumulation rates (up to a factor of 8) were determined in the sediments of the Antarctic zone during the climate optima at the beginning of the Holocene and the isotope stage 5e. By comparing expected and measured accumulation rate of 230Thex, lateral sediment redistribution was quantified and vertical particle rain rates originating from the surface water above were calculated. We show that lateral contributions locally were up to 6.5 times higher than the vertical particle rain rates. At other locations only 15% of the expected vertical particle rain rate were deposited. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Agulhas Basin ENVELOPE(27.000,27.000,-47.000,-47.000) Antarctic Shona Ridge ENVELOPE(2.750,2.750,-51.000,-51.000) The Antarctic ENVELOPE(1.163330,11.759000,-43.218167,-55.458333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Agulhas Basin ANT-IX/4 ANT-VIII/3 Atlantic Ridge AWI_MarGeoChem AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Marine Geochemistry @ AWI Meteor Rise MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS16 PS16/278 PS16/284 PS16/311 PS16/321 PS1754-1 PS1754-2 PS1756-5 PS1756-6 PS1768-1 PS1768-8 PS1772-6 PS1772-8 PS18 PS18/238 PS2082-1 PS2082-3 Shona Ridge SL |
spellingShingle |
Agulhas Basin ANT-IX/4 ANT-VIII/3 Atlantic Ridge AWI_MarGeoChem AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Marine Geochemistry @ AWI Meteor Rise MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS16 PS16/278 PS16/284 PS16/311 PS16/321 PS1754-1 PS1754-2 PS1756-5 PS1756-6 PS1768-1 PS1768-8 PS1772-6 PS1772-8 PS18 PS18/238 PS2082-1 PS2082-3 Shona Ridge SL Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Kuhn, Gerhard Mangini, Augusto Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
topic_facet |
Agulhas Basin ANT-IX/4 ANT-VIII/3 Atlantic Ridge AWI_MarGeoChem AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Marine Geochemistry @ AWI Meteor Rise MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS16 PS16/278 PS16/284 PS16/311 PS16/321 PS1754-1 PS1754-2 PS1756-5 PS1756-6 PS1768-1 PS1768-8 PS1772-6 PS1772-8 PS18 PS18/238 PS2082-1 PS2082-3 Shona Ridge SL |
description |
High-resolution records of the natural radionuclide 230Th were measured in sediments from the eastern Atlantic sector of the Antarctic circumpolar current to obtain a detailed reconstruction of the sedimentation history of this key area for global climate change during the late Quaternary. High-resolution dating rests on the assumption that the 230Thex flux to the sediments is constant. Short periods of drastically increased sediment accumulation rates (up to a factor of 8) were determined in the sediments of the Antarctic zone during the climate optima at the beginning of the Holocene and the isotope stage 5e. By comparing expected and measured accumulation rate of 230Thex, lateral sediment redistribution was quantified and vertical particle rain rates originating from the surface water above were calculated. We show that lateral contributions locally were up to 6.5 times higher than the vertical particle rain rates. At other locations only 15% of the expected vertical particle rain rate were deposited. |
format |
Dataset |
author |
Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Kuhn, Gerhard Mangini, Augusto |
author_facet |
Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Kuhn, Gerhard Mangini, Augusto |
author_sort |
Frank, Martin |
title |
Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
title_short |
Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
title_full |
Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
title_fullStr |
Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
title_full_unstemmed |
Radionuclides and sedimentation rates of sediment cores from the eastern South Atlantic |
title_sort |
radionuclides and sedimentation rates of sediment cores from the eastern south atlantic |
publisher |
PANGAEA |
publishDate |
1996 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.711823 https://doi.org/10.1594/PANGAEA.711823 |
op_coverage |
MEDIAN LATITUDE: -49.387066 * MEDIAN LONGITUDE: 6.341832 * SOUTH-BOUND LATITUDE: -55.458333 * WEST-BOUND LONGITUDE: 1.163330 * NORTH-BOUND LATITUDE: -43.218167 * EAST-BOUND LONGITUDE: 11.759000 * DATE/TIME START: 1989-11-06T15:58:00 * DATE/TIME END: 1991-04-03T18:40:00 |
long_lat |
ENVELOPE(27.000,27.000,-47.000,-47.000) ENVELOPE(2.750,2.750,-51.000,-51.000) ENVELOPE(1.163330,11.759000,-43.218167,-55.458333) |
geographic |
Agulhas Basin Antarctic Shona Ridge The Antarctic |
geographic_facet |
Agulhas Basin Antarctic Shona Ridge The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Kuhn, Gerhard; Mangini, Augusto (1996): Late Quaternary sediment dating and quantification of lateral sediment redistribution applying 230Th-excess, a study of the eastern Atlantic sector of the Southern Ocean. Geologische Rundschau, 85(3), 554-566, https://doi.org/10.1007/BF02369010 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.711823 https://doi.org/10.1594/PANGAEA.711823 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.711823 https://doi.org/10.1007/BF02369010 |
_version_ |
1766163451796783104 |