PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT.
International audience The effects of iron on the fate of carbon exported to deep layers and on its main transfer pathways are investigated using Underwater Vision Profiler data obtained northeast and southeast of Kerguelen Island during KEOPS 2 (Oct.-Nov. 2011). The temporal increase of the particl...
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ftunivtoulon:oai:HAL:hal-00813987v1 2023-12-31T10:23:18+01:00 PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. Jouandet, Marie-Paule Ecologie Marine et BIOdiversité (EMBIO) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) keops2 ANR-05-PADD-0012,PRODDIG,Promotion du Développement Durable par les Indications Géographiques(2005) New Orleans, United States 2013-02-17 https://hal.science/hal-00813987 en eng HAL CCSD hal-00813987 https://hal.science/hal-00813987 ASLO https://hal.science/hal-00813987 ASLO, Feb 2013, New Orleans, United States particles size spectra aggregation carbon export [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/conferenceObject Conference papers 2013 ftunivtoulon 2023-12-05T23:34:45Z International audience The effects of iron on the fate of carbon exported to deep layers and on its main transfer pathways are investigated using Underwater Vision Profiler data obtained northeast and southeast of Kerguelen Island during KEOPS 2 (Oct.-Nov. 2011). The temporal increase of the particle volume in the mixed layer, from pre-bloom to spring bloom condition, was maximal at the southeastern site. However, particle volume was lower than already measured in this area at later stage of the bloom (KEOPS1, Jouandet et al., 2011). The spatio-temporal variability was associated to particle size distribution (PSD) changes. Southern site was characterized by a higher abundance of large particles (> 500 µm) compared to the Northeastern site. Comparison with KEOPS 1 data highlights an increase of the large particle production from pre bloom to the end of the bloom. Finally, changes in PSD led to a 10-fold lower carbon export flux at the early stage of the bloom than at its maximum. Mechanisms leading to the observed variation will be discussed through the use of a multiple particle analysis approach. Conference Object Southern Ocean Université de Toulon: HAL |
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Open Polar |
collection |
Université de Toulon: HAL |
op_collection_id |
ftunivtoulon |
language |
English |
topic |
particles size spectra aggregation carbon export [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
particles size spectra aggregation carbon export [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Jouandet, Marie-Paule PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
topic_facet |
particles size spectra aggregation carbon export [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The effects of iron on the fate of carbon exported to deep layers and on its main transfer pathways are investigated using Underwater Vision Profiler data obtained northeast and southeast of Kerguelen Island during KEOPS 2 (Oct.-Nov. 2011). The temporal increase of the particle volume in the mixed layer, from pre-bloom to spring bloom condition, was maximal at the southeastern site. However, particle volume was lower than already measured in this area at later stage of the bloom (KEOPS1, Jouandet et al., 2011). The spatio-temporal variability was associated to particle size distribution (PSD) changes. Southern site was characterized by a higher abundance of large particles (> 500 µm) compared to the Northeastern site. Comparison with KEOPS 1 data highlights an increase of the large particle production from pre bloom to the end of the bloom. Finally, changes in PSD led to a 10-fold lower carbon export flux at the early stage of the bloom than at its maximum. Mechanisms leading to the observed variation will be discussed through the use of a multiple particle analysis approach. |
author2 |
Ecologie Marine et BIOdiversité (EMBIO) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) keops2 ANR-05-PADD-0012,PRODDIG,Promotion du Développement Durable par les Indications Géographiques(2005) |
format |
Conference Object |
author |
Jouandet, Marie-Paule |
author_facet |
Jouandet, Marie-Paule |
author_sort |
Jouandet, Marie-Paule |
title |
PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
title_short |
PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
title_full |
PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
title_fullStr |
PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
title_full_unstemmed |
PARTICLE SIZE DISTRIBUTIONS IN RESPONSE TO NATURAL IRON FERTILISATION IN THE SOUTHERN OCEAN (KERGUELEN ISLAND)-IMPLICATION FOR CARBON EXPORT. |
title_sort |
particle size distributions in response to natural iron fertilisation in the southern ocean (kerguelen island)-implication for carbon export. |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00813987 |
op_coverage |
New Orleans, United States |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ASLO https://hal.science/hal-00813987 ASLO, Feb 2013, New Orleans, United States |
op_relation |
hal-00813987 https://hal.science/hal-00813987 |
_version_ |
1786834837350383616 |