Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)

Continental dust can be suspended and transported by the wind, reaching seawater masses far away from its source. The deposition of the aerosols on the ocean surface can alter the abundance of chemical species in the water column and contribute to element inventories in seafloor sediments. A major S...

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Autores: Más Balbuena, José Luis, Martín, Jacobo, Pham, Mai Khanh, Chamizo Calvo, Elena, Miquel, Juan-Carlos, Povinec, Pavel P., Eriksson, Mats, Villa Alfageme, María
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/152620
Acceso en línea:https://hdl.handle.net/11441/152620
https://doi.org/10.1016/j.marchem.2020.103792
Access Level:acceso abierto
Palabra clave:Vertical export of trace elements
DYFAMED
Fe
Dust input event
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repository_id_str
spelling Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)Más Balbuena, José LuisMartín, JacoboPham, Mai KhanhChamizo Calvo, ElenaMiquel, Juan-CarlosPovinec, Pavel P.Eriksson, MatsVilla Alfageme, MaríaVertical export of trace elementsDYFAMEDFeDust input eventContinental dust can be suspended and transported by the wind, reaching seawater masses far away from its source. The deposition of the aerosols on the ocean surface can alter the abundance of chemical species in the water column and contribute to element inventories in seafloor sediments. A major Saharan dust intrusion into the Western Mediterranean Sea was recorded at the DYFAMED site (Ligurian Sea) in 20th February 2004. We determine the influence of this dust event on the concentration of 30 major and trace level elements (TE) in sinking particles collected by sediment traps deployed at 200 m and 1000 m depth, and how a dust flux event like this contribute to the exchange of TE, including Fe, with the water column during major dust events. With coupled sediment traps and aerosol samples, we assessed the short-term implications of dust events in the water column. The event produced a flux of fast (> 111 m d-1) and slow (< 20 m d-1) sinking dust particles, detected during 3 weeks at 200 m and 4 weeks at 1000 m depth. This study demonstrates that a single dust deposition event can produce a sinking flux equivalent to annual deposition rates of elements relevant to biogeochemical cycles and/or pollution studies: (>60% for Cr and Cu, >70% for Al, >80% for Ni and Zn, >90% for V and Mn, >100% for Fe and Pb). The corresponding Enrichment Factors (EF) in the sediment traps during the atmospheric dust as reference were calculated, which in the TE analysed in the traps ranged between 0.35 and 421 in both 200 m and 1000 m sediment traps. For most of the TE, EF >1. A few exceptions were V, Y, Zr, Nb, and Ce (EF ~ 1) and Cr, Ni, Cu, Zn, Sn, and Pb (EF<1). Despite the variability in the EF values, vertical fluxes integrated during the dust event increased from 200 m to 1000 m, except for I, which decreased. This contrasts strongly with the element fluxes integrated for the complete sampling season, which decrease or increase from 200 m to 1000 m, depending on the element. This suggests that sinking dust particles are acting generally as sinks of the TE. We conclude that, apart from I, a substantial portion of the atmospheric dust input from one of these deposition events can reach the mesopelagic layer of the Western Mediterranean basin without increasing the budget of the dissolved TE.ElsevierFísica Aplicada IFísica Aplicada IIRNM138: Fisica Nuclear Aplicada2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/152620https://doi.org/10.1016/j.marchem.2020.103792reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMarine Chemistry, 223 (103792).https://www.sciencedirect.com/science/article/pii/S0304420320300463info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1526202026-06-17T12:51:07Z
dc.title.none.fl_str_mv Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
title Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
spellingShingle Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
Más Balbuena, José Luis
Vertical export of trace elements
DYFAMED
Fe
Dust input event
title_short Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
title_full Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
title_fullStr Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
title_full_unstemmed Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
title_sort Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean)
dc.creator.none.fl_str_mv Más Balbuena, José Luis
Martín, Jacobo
Pham, Mai Khanh
Chamizo Calvo, Elena
Miquel, Juan-Carlos
Povinec, Pavel P.
Eriksson, Mats
Villa Alfageme, María
author Más Balbuena, José Luis
author_facet Más Balbuena, José Luis
Martín, Jacobo
Pham, Mai Khanh
Chamizo Calvo, Elena
Miquel, Juan-Carlos
Povinec, Pavel P.
Eriksson, Mats
Villa Alfageme, María
author_role author
author2 Martín, Jacobo
Pham, Mai Khanh
Chamizo Calvo, Elena
Miquel, Juan-Carlos
Povinec, Pavel P.
Eriksson, Mats
Villa Alfageme, María
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Aplicada I
Física Aplicada II
RNM138: Fisica Nuclear Aplicada
dc.subject.none.fl_str_mv Vertical export of trace elements
DYFAMED
Fe
Dust input event
topic Vertical export of trace elements
DYFAMED
Fe
Dust input event
description Continental dust can be suspended and transported by the wind, reaching seawater masses far away from its source. The deposition of the aerosols on the ocean surface can alter the abundance of chemical species in the water column and contribute to element inventories in seafloor sediments. A major Saharan dust intrusion into the Western Mediterranean Sea was recorded at the DYFAMED site (Ligurian Sea) in 20th February 2004. We determine the influence of this dust event on the concentration of 30 major and trace level elements (TE) in sinking particles collected by sediment traps deployed at 200 m and 1000 m depth, and how a dust flux event like this contribute to the exchange of TE, including Fe, with the water column during major dust events. With coupled sediment traps and aerosol samples, we assessed the short-term implications of dust events in the water column. The event produced a flux of fast (> 111 m d-1) and slow (< 20 m d-1) sinking dust particles, detected during 3 weeks at 200 m and 4 weeks at 1000 m depth. This study demonstrates that a single dust deposition event can produce a sinking flux equivalent to annual deposition rates of elements relevant to biogeochemical cycles and/or pollution studies: (>60% for Cr and Cu, >70% for Al, >80% for Ni and Zn, >90% for V and Mn, >100% for Fe and Pb). The corresponding Enrichment Factors (EF) in the sediment traps during the atmospheric dust as reference were calculated, which in the TE analysed in the traps ranged between 0.35 and 421 in both 200 m and 1000 m sediment traps. For most of the TE, EF >1. A few exceptions were V, Y, Zr, Nb, and Ce (EF ~ 1) and Cr, Ni, Cu, Zn, Sn, and Pb (EF<1). Despite the variability in the EF values, vertical fluxes integrated during the dust event increased from 200 m to 1000 m, except for I, which decreased. This contrasts strongly with the element fluxes integrated for the complete sampling season, which decrease or increase from 200 m to 1000 m, depending on the element. This suggests that sinking dust particles are acting generally as sinks of the TE. We conclude that, apart from I, a substantial portion of the atmospheric dust input from one of these deposition events can reach the mesopelagic layer of the Western Mediterranean basin without increasing the budget of the dissolved TE.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/152620
https://doi.org/10.1016/j.marchem.2020.103792
url https://hdl.handle.net/11441/152620
https://doi.org/10.1016/j.marchem.2020.103792
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Marine Chemistry, 223 (103792).
https://www.sciencedirect.com/science/article/pii/S0304420320300463
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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