Links between iron and humic substances biogeochemistry in the Ocean
International audience North Africa is the largest dust source area in the world, accounting for 55% of global continental dust emission [1]. These dust can be transported over long distance and have an environmental impact on ocean after deposition through biogeochemical processes [2], they are als...
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ftinsu:oai:HAL:hal-02331926v1 2024-02-11T10:06:31+01:00 Links between iron and humic substances biogeochemistry in the Ocean Dulaquais, Gabriel Crampond, Kevin Waeles, Matthieu Gerringa, Loes Middag, Rob Rijkenberg, Micha, J A Boye, Marie Riso, Ricardo, D. Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Royal Netherlands Institute for Sea Research (NIOZ) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Barcelone, Spain 2019-08-18 https://hal.science/hal-02331926 en eng HAL CCSD hal-02331926 https://hal.science/hal-02331926 Goldschmidt 2019 https://hal.science/hal-02331926 Goldschmidt 2019, Aug 2019, Barcelone, Spain [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2019 ftinsu 2024-01-24T17:35:32Z International audience North Africa is the largest dust source area in the world, accounting for 55% of global continental dust emission [1]. These dust can be transported over long distance and have an environmental impact on ocean after deposition through biogeochemical processes [2], they are also important nutrition source for North Tropical Atlantic Islands [3]. Since three years, atmospheric deposition is continuously sampled and analyzed for elemental composition on a weekly basis at the Observatoire Volcanologique et Sismologique de Guadeloupe (OVSG-IPGP, 15°58'50" N, 61°42'13" W) situated in the Western North Atlantic Ocean and an average deposition flux of 10 g/m2 /year is measured at La Guadeloupe Island. A strong seasonality is observed on the flux of elements of crustal origin such as as Fe with the largest flux observed between April and September. The seasonality and annual variations of the deposition composition on major, minor and traces including rare earth elements are studied and it turns out that: (i) deposition samples collected during the summer months have a major element composition close to crust, (ii) samples collected during the winter months are dominated by sea salt. (iii) rare earth elements exhibit a stable profile during the whole year. (iv) interannual variation of composition is observed between samples for both major and traces. This study will help us to better understand the Saharan dust impact on the Caribbean basin. Conference Object North Atlantic Institut national des sciences de l'Univers: HAL-INSU |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Dulaquais, Gabriel Crampond, Kevin Waeles, Matthieu Gerringa, Loes Middag, Rob Rijkenberg, Micha, J A Boye, Marie Riso, Ricardo, D. Links between iron and humic substances biogeochemistry in the Ocean |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience North Africa is the largest dust source area in the world, accounting for 55% of global continental dust emission [1]. These dust can be transported over long distance and have an environmental impact on ocean after deposition through biogeochemical processes [2], they are also important nutrition source for North Tropical Atlantic Islands [3]. Since three years, atmospheric deposition is continuously sampled and analyzed for elemental composition on a weekly basis at the Observatoire Volcanologique et Sismologique de Guadeloupe (OVSG-IPGP, 15°58'50" N, 61°42'13" W) situated in the Western North Atlantic Ocean and an average deposition flux of 10 g/m2 /year is measured at La Guadeloupe Island. A strong seasonality is observed on the flux of elements of crustal origin such as as Fe with the largest flux observed between April and September. The seasonality and annual variations of the deposition composition on major, minor and traces including rare earth elements are studied and it turns out that: (i) deposition samples collected during the summer months have a major element composition close to crust, (ii) samples collected during the winter months are dominated by sea salt. (iii) rare earth elements exhibit a stable profile during the whole year. (iv) interannual variation of composition is observed between samples for both major and traces. This study will help us to better understand the Saharan dust impact on the Caribbean basin. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Royal Netherlands Institute for Sea Research (NIOZ) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Dulaquais, Gabriel Crampond, Kevin Waeles, Matthieu Gerringa, Loes Middag, Rob Rijkenberg, Micha, J A Boye, Marie Riso, Ricardo, D. |
author_facet |
Dulaquais, Gabriel Crampond, Kevin Waeles, Matthieu Gerringa, Loes Middag, Rob Rijkenberg, Micha, J A Boye, Marie Riso, Ricardo, D. |
author_sort |
Dulaquais, Gabriel |
title |
Links between iron and humic substances biogeochemistry in the Ocean |
title_short |
Links between iron and humic substances biogeochemistry in the Ocean |
title_full |
Links between iron and humic substances biogeochemistry in the Ocean |
title_fullStr |
Links between iron and humic substances biogeochemistry in the Ocean |
title_full_unstemmed |
Links between iron and humic substances biogeochemistry in the Ocean |
title_sort |
links between iron and humic substances biogeochemistry in the ocean |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02331926 |
op_coverage |
Barcelone, Spain |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Goldschmidt 2019 https://hal.science/hal-02331926 Goldschmidt 2019, Aug 2019, Barcelone, Spain |
op_relation |
hal-02331926 https://hal.science/hal-02331926 |
_version_ |
1790604291254255616 |