Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean
International audience Hydrocarbons, sterols and alkenones were analyzed in samples collected from a 10 month sediment trap time series deployed in the Indian Ocean sector of the Southern Ocean. Fluxes and within-class distributions varied seasonally. During higher mass and organic carbon (OC) flux...
Published in: | Organic Geochemistry |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1998
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Subjects: | |
Online Access: | https://hal.science/hal-01461261 https://doi.org/10.1016/S0146-6380(98)00008-4 |
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ftunivaixmarseil:oai:HAL:hal-01461261v1 |
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openpolar |
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Open Polar |
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Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Ternois, Yann Sicre, Marie-Alexandrine Boireau, Anne Beaufort, Luc, L Miquel, Juan-Carlos Jeandel, Catherine Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Hydrocarbons, sterols and alkenones were analyzed in samples collected from a 10 month sediment trap time series deployed in the Indian Ocean sector of the Southern Ocean. Fluxes and within-class distributions varied seasonally. During higher mass and organic carbon (OC) flux periods, which occurred in austral summer and fall, fresh marine inputs were predominant. Vertical fluxes were most intense in January, but limited to one week in duration. They were, however, low compared with other oceanic regions. In contrast, low mass and OC flux periods were characterized by a strong unresolved complex mixture (UCM) in the hydrocarbon fraction and a high proportion of stanols as a result of zooplanktonic grazing. Terrigenous inputs were not detectable. The alkenone compositions were consistent with previous data on suspended particles from Antarctic waters. However, U 37 K' values diverged from the linear and exponential fits established by Sikes, E. L. and Volkman, J. K. Calibration of alkenone unsaturation ratios (U 37 K' ) for paleotemperature estimation in cold polar waters. Geochimica et Cosmochimica Acta, 1993, 57, 1883–1889], in the low temperature range. The seasonal pattern of alkenone production implied that IPT (integrated production temperature) is likely to be strongly imprinted by austral summer and fall SST (sea surface temperature). |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de Physique et Chimie Marines (LPCM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Marine Environment Laboratories Monaco (IAEA-MEL) International Atomic Energy Agency Vienna (IAEA) GEOMAR LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Ternois, Yann Sicre, Marie-Alexandrine Boireau, Anne Beaufort, Luc, L Miquel, Juan-Carlos Jeandel, Catherine |
author_facet |
Ternois, Yann Sicre, Marie-Alexandrine Boireau, Anne Beaufort, Luc, L Miquel, Juan-Carlos Jeandel, Catherine |
author_sort |
Ternois, Yann |
title |
Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
title_short |
Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
title_full |
Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
title_fullStr |
Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
title_full_unstemmed |
Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean |
title_sort |
hydrocarbons, sterols and alkenones in sinking particles in the indian ocean sector of the southern ocean |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.science/hal-01461261 https://doi.org/10.1016/S0146-6380(98)00008-4 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISSN: 0146-6380 Organic Geochemistry https://hal.science/hal-01461261 Organic Geochemistry, 1998, 28 (7), pp.489--501. ⟨10.1016/S0146-6380(98)00008-4⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0146-6380(98)00008-4 hal-01461261 https://hal.science/hal-01461261 doi:10.1016/S0146-6380(98)00008-4 WOS: 000074542900007 |
op_doi |
https://doi.org/10.1016/S0146-6380(98)00008-4 |
container_title |
Organic Geochemistry |
container_volume |
28 |
container_issue |
7-8 |
container_start_page |
489 |
op_container_end_page |
501 |
_version_ |
1797573307656044544 |
spelling |
ftunivaixmarseil:oai:HAL:hal-01461261v1 2024-04-28T08:01:39+00:00 Hydrocarbons, sterols and alkenones in sinking particles in the Indian Ocean sector of the Southern Ocean Ternois, Yann Sicre, Marie-Alexandrine Boireau, Anne Beaufort, Luc, L Miquel, Juan-Carlos Jeandel, Catherine Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de Physique et Chimie Marines (LPCM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Marine Environment Laboratories Monaco (IAEA-MEL) International Atomic Energy Agency Vienna (IAEA) GEOMAR LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 1998 https://hal.science/hal-01461261 https://doi.org/10.1016/S0146-6380(98)00008-4 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/S0146-6380(98)00008-4 hal-01461261 https://hal.science/hal-01461261 doi:10.1016/S0146-6380(98)00008-4 WOS: 000074542900007 ISSN: 0146-6380 Organic Geochemistry https://hal.science/hal-01461261 Organic Geochemistry, 1998, 28 (7), pp.489--501. ⟨10.1016/S0146-6380(98)00008-4⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 1998 ftunivaixmarseil https://doi.org/10.1016/S0146-6380(98)00008-4 2024-04-04T17:37:38Z International audience Hydrocarbons, sterols and alkenones were analyzed in samples collected from a 10 month sediment trap time series deployed in the Indian Ocean sector of the Southern Ocean. Fluxes and within-class distributions varied seasonally. During higher mass and organic carbon (OC) flux periods, which occurred in austral summer and fall, fresh marine inputs were predominant. Vertical fluxes were most intense in January, but limited to one week in duration. They were, however, low compared with other oceanic regions. In contrast, low mass and OC flux periods were characterized by a strong unresolved complex mixture (UCM) in the hydrocarbon fraction and a high proportion of stanols as a result of zooplanktonic grazing. Terrigenous inputs were not detectable. The alkenone compositions were consistent with previous data on suspended particles from Antarctic waters. However, U 37 K' values diverged from the linear and exponential fits established by Sikes, E. L. and Volkman, J. K. Calibration of alkenone unsaturation ratios (U 37 K' ) for paleotemperature estimation in cold polar waters. Geochimica et Cosmochimica Acta, 1993, 57, 1883–1889], in the low temperature range. The seasonal pattern of alkenone production implied that IPT (integrated production temperature) is likely to be strongly imprinted by austral summer and fall SST (sea surface temperature). Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Aix-Marseille Université: HAL Organic Geochemistry 28 7-8 489 501 |