Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review
International audience Quantifying fluxes of trace elements and their isotopes (TEIs) at the ocean's sediment–water boundary is a pre-eminent challenge to understand their role in the present, past and future ocean. There are multiple processes that drive the uptake and release of TEIs, and pro...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Main Authors: | , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://hal.archives-ouvertes.fr/hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639/document https://hal.archives-ouvertes.fr/hal-03214639/file/rsta.2016.0246.pdf https://doi.org/10.1098/rsta.2016.0246 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Homoky, William Weber, Thomas Berelson, William Conway, Tim Henderson, Gideon van Hulten, Marco Jeandel, Catherine Severmann, Silke Tagliabue, Alessandro Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Quantifying fluxes of trace elements and their isotopes (TEIs) at the ocean's sediment–water boundary is a pre-eminent challenge to understand their role in the present, past and future ocean. There are multiple processes that drive the uptake and release of TEIs, and properties that determine their rates are unevenly distributed (e.g. sediment composition, redox conditions and (bio)physical dynamics). These factors complicate our efforts to find, measure and extrapolate TEI fluxes across ocean basins. GEOTRACES observations are unveiling the oceanic distributions of many TEIs for the first time. These data evidence the influence of the sediment–water boundary on many TEI cycles, and underline the fact that our knowledge of the source–sink fluxes that sustain oceanic distributions is largely missing. Present flux measurements provide low spatial coverage and only part of the empirical basis needed to predict TEI flux variations. Many of the advances and present challenges facing TEI flux measurements are linked to process studies that collect sediment cores, pore waters, sinking material or seawater in close contact with sediments. However, such sampling has not routinely been viable on GEOTRACES expeditions. In this article, we recommend approaches to address these issues: firstly, with an interrogation of emergent data using isotopic mass-balance and inverse modelling techniques; and secondly, by innovating pursuits of direct TEI flux measurements. We exemplify the value of GEOTRACES data with a new inverse model estimate of benthic Al flux in the North Atlantic Ocean. Furthermore, we review viable flux measurement techniques tailored to the sediment–water boundary. We propose that such activities are aimed at regions that intersect the GEOTRACES Science Plan on the basis of seven criteria that may influence TEI fluxes: sediment provenance, composition, organic carbon supply, redox conditions, sedimentation rate, bathymetry and the benthic nepheloid inventory. This article is part of ... |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Homoky, William Weber, Thomas Berelson, William Conway, Tim Henderson, Gideon van Hulten, Marco Jeandel, Catherine Severmann, Silke Tagliabue, Alessandro |
author_facet |
Homoky, William Weber, Thomas Berelson, William Conway, Tim Henderson, Gideon van Hulten, Marco Jeandel, Catherine Severmann, Silke Tagliabue, Alessandro |
author_sort |
Homoky, William |
title |
Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
title_short |
Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
title_full |
Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
title_fullStr |
Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
title_full_unstemmed |
Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
title_sort |
quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.archives-ouvertes.fr/hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639/document https://hal.archives-ouvertes.fr/hal-03214639/file/rsta.2016.0246.pdf https://doi.org/10.1098/rsta.2016.0246 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1364-503X EISSN: 1471-2962 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences https://hal.archives-ouvertes.fr/hal-03214639 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Royal Society, The, 2016, 374 (2081), pp.20160246. ⟨10.1098/rsta.2016.0246⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsta.2016.0246 hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639/document https://hal.archives-ouvertes.fr/hal-03214639/file/rsta.2016.0246.pdf doi:10.1098/rsta.2016.0246 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1098/rsta.2016.0246 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
374 |
container_issue |
2081 |
container_start_page |
20160246 |
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1766135634347425792 |
spelling |
ftccsdartic:oai:HAL:hal-03214639v1 2023-05-15T17:36:13+02:00 Quantifying trace element and isotope fluxes at the ocean–sediment boundary: a review Homoky, William Weber, Thomas Berelson, William Conway, Tim Henderson, Gideon van Hulten, Marco Jeandel, Catherine Severmann, Silke Tagliabue, Alessandro Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2016-11-28 https://hal.archives-ouvertes.fr/hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639/document https://hal.archives-ouvertes.fr/hal-03214639/file/rsta.2016.0246.pdf https://doi.org/10.1098/rsta.2016.0246 en eng HAL CCSD Royal Society, The info:eu-repo/semantics/altIdentifier/doi/10.1098/rsta.2016.0246 hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639 https://hal.archives-ouvertes.fr/hal-03214639/document https://hal.archives-ouvertes.fr/hal-03214639/file/rsta.2016.0246.pdf doi:10.1098/rsta.2016.0246 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1364-503X EISSN: 1471-2962 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences https://hal.archives-ouvertes.fr/hal-03214639 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Royal Society, The, 2016, 374 (2081), pp.20160246. ⟨10.1098/rsta.2016.0246⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.1098/rsta.2016.0246 2021-12-19T00:13:15Z International audience Quantifying fluxes of trace elements and their isotopes (TEIs) at the ocean's sediment–water boundary is a pre-eminent challenge to understand their role in the present, past and future ocean. There are multiple processes that drive the uptake and release of TEIs, and properties that determine their rates are unevenly distributed (e.g. sediment composition, redox conditions and (bio)physical dynamics). These factors complicate our efforts to find, measure and extrapolate TEI fluxes across ocean basins. GEOTRACES observations are unveiling the oceanic distributions of many TEIs for the first time. These data evidence the influence of the sediment–water boundary on many TEI cycles, and underline the fact that our knowledge of the source–sink fluxes that sustain oceanic distributions is largely missing. Present flux measurements provide low spatial coverage and only part of the empirical basis needed to predict TEI flux variations. Many of the advances and present challenges facing TEI flux measurements are linked to process studies that collect sediment cores, pore waters, sinking material or seawater in close contact with sediments. However, such sampling has not routinely been viable on GEOTRACES expeditions. In this article, we recommend approaches to address these issues: firstly, with an interrogation of emergent data using isotopic mass-balance and inverse modelling techniques; and secondly, by innovating pursuits of direct TEI flux measurements. We exemplify the value of GEOTRACES data with a new inverse model estimate of benthic Al flux in the North Atlantic Ocean. Furthermore, we review viable flux measurement techniques tailored to the sediment–water boundary. We propose that such activities are aimed at regions that intersect the GEOTRACES Science Plan on the basis of seven criteria that may influence TEI fluxes: sediment provenance, composition, organic carbon supply, redox conditions, sedimentation rate, bathymetry and the benthic nepheloid inventory. This article is part of ... Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374 2081 20160246 |