dc.creator | Más Balbuena, José Luis | es |
dc.creator | Martín, Jacobo | es |
dc.creator | Pham, Mai Khanh | es |
dc.creator | Chamizo Calvo, Elena | es |
dc.creator | Miquel, Juan-Carlos | es |
dc.creator | Povinec, Pavel P. | es |
dc.creator | Eriksson, Mats | es |
dc.creator | Villa Alfageme, María | es |
dc.date.accessioned | 2023-12-18T10:50:10Z | |
dc.date.available | 2023-12-18T10:50:10Z | |
dc.date.issued | 2020-06 | |
dc.identifier.citation | Más Balbuena, J.L., Martín, J., Pham, M.K., Chamizo Calvo, E., Miquel, J., Povinec, P.P.,...,Villa Alfageme, M. (2020). Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean). Marine Chemistry, 223 (103792). https://doi.org/10.1016/j.marchem.2020.103792. | |
dc.identifier.issn | 1872-7581 | es |
dc.identifier.issn | 0304-4203 | es |
dc.identifier.uri | https://hdl.handle.net/11441/152620 | |
dc.description.abstract | 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. | es |
dc.format | application/pdf | es |
dc.format.extent | 14 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Marine Chemistry, 223 (103792). | |
dc.rights | Atribución-NoComercial-CompartirIgual 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | * |
dc.subject | Vertical export of trace elements | es |
dc.subject | DYFAMED | es |
dc.subject | Fe | es |
dc.subject | Dust input event | es |
dc.title | Analysis of a major Aeolian dust input event and its impact on element fluxes and inventories at the DYFAMED site (Northwestern Mediterranean) | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada I | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada II | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0304420320300463 | es |
dc.identifier.doi | 10.1016/j.marchem.2020.103792 | es |
dc.contributor.group | RNM138: Fisica Nuclear Aplicada | es |
idus.validador.nota | Postprint. Accepted Version | es |
dc.journaltitle | Marine Chemistry | es |
dc.publication.volumen | 223 | es |
dc.publication.issue | 103792 | es |