Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean
Identifying the source of atmospheric dust is crucial to better understand the global marine biogeochemical cycle as phytoplankton growth relies on dissolved micronutrient elements available in the open ocean. Mineralogical, geochemical and Sr isotope analyses of a one year-time series (April 2003–A...
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Online Access: | https://eprints.soton.ac.uk/50004/ http://www.agu.org/journals/gl/gl0721/2007GL030985/ |
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ftsouthampton:oai:eprints.soton.ac.uk:50004 2023-07-30T04:05:45+02:00 Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean Chavagnac, V. Waniek, J.J. Atkin, D. Milton, J.A. Leipe, T. Green, D.R.H. Bahlo, R. Hayes, T.E.F. Schulz-Bull, D.E. 2007-11-16 https://eprints.soton.ac.uk/50004/ http://www.agu.org/journals/gl/gl0721/2007GL030985/ unknown Chavagnac, V., Waniek, J.J., Atkin, D., Milton, J.A., Leipe, T., Green, D.R.H., Bahlo, R., Hayes, T.E.F. and Schulz-Bull, D.E. (2007) Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean. Geophysical Research Letters, 34 (21), L21604. (doi:10.1029/2007GL030985 <http://dx.doi.org/10.1029/2007GL030985>). Article PeerReviewed 2007 ftsouthampton https://doi.org/10.1029/2007GL030985 2023-07-09T20:54:33Z Identifying the source of atmospheric dust is crucial to better understand the global marine biogeochemical cycle as phytoplankton growth relies on dissolved micronutrient elements available in the open ocean. Mineralogical, geochemical and Sr isotope analyses of a one year-time series (April 2003–April 2004) of deep ocean particle flux at the Madeira Abyssal Plain in the subtropical northeast Atlantic are presented. The lithogenic fraction has a high occurrence of palygorskite and smectite and an absence of kaolinite together with Sr isotopic compositions similar to the Northeast Atlantic aerosols. This indicates the Anti-Atlas Moroccan chain of Paleozoïc age as the source region. The lithogenic fraction supplies 4 times more Fe during a dust event than during the spring-summer aeolian input. A continuous input of only 1% of the lithogenic iron made available over a year period, could lead to an increase in primary productivity of 40% relative to today's value. Article in Journal/Newspaper Northeast Atlantic University of Southampton: e-Prints Soton Geophysical Research Letters 34 21 |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
unknown |
description |
Identifying the source of atmospheric dust is crucial to better understand the global marine biogeochemical cycle as phytoplankton growth relies on dissolved micronutrient elements available in the open ocean. Mineralogical, geochemical and Sr isotope analyses of a one year-time series (April 2003–April 2004) of deep ocean particle flux at the Madeira Abyssal Plain in the subtropical northeast Atlantic are presented. The lithogenic fraction has a high occurrence of palygorskite and smectite and an absence of kaolinite together with Sr isotopic compositions similar to the Northeast Atlantic aerosols. This indicates the Anti-Atlas Moroccan chain of Paleozoïc age as the source region. The lithogenic fraction supplies 4 times more Fe during a dust event than during the spring-summer aeolian input. A continuous input of only 1% of the lithogenic iron made available over a year period, could lead to an increase in primary productivity of 40% relative to today's value. |
format |
Article in Journal/Newspaper |
author |
Chavagnac, V. Waniek, J.J. Atkin, D. Milton, J.A. Leipe, T. Green, D.R.H. Bahlo, R. Hayes, T.E.F. Schulz-Bull, D.E. |
spellingShingle |
Chavagnac, V. Waniek, J.J. Atkin, D. Milton, J.A. Leipe, T. Green, D.R.H. Bahlo, R. Hayes, T.E.F. Schulz-Bull, D.E. Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
author_facet |
Chavagnac, V. Waniek, J.J. Atkin, D. Milton, J.A. Leipe, T. Green, D.R.H. Bahlo, R. Hayes, T.E.F. Schulz-Bull, D.E. |
author_sort |
Chavagnac, V. |
title |
Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
title_short |
Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
title_full |
Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
title_fullStr |
Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
title_full_unstemmed |
Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean |
title_sort |
anti-atlas moroccan chain as the source of lithogenic-derived micronutrient fluxes to the deep northeast atlantic ocean |
publishDate |
2007 |
url |
https://eprints.soton.ac.uk/50004/ http://www.agu.org/journals/gl/gl0721/2007GL030985/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Chavagnac, V., Waniek, J.J., Atkin, D., Milton, J.A., Leipe, T., Green, D.R.H., Bahlo, R., Hayes, T.E.F. and Schulz-Bull, D.E. (2007) Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean. Geophysical Research Letters, 34 (21), L21604. (doi:10.1029/2007GL030985 <http://dx.doi.org/10.1029/2007GL030985>). |
op_doi |
https://doi.org/10.1029/2007GL030985 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
21 |
_version_ |
1772817890144157696 |