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Choumiline, K., F., Aguirre Bahena, E., Shumilin, N., Silverberg & D., Sapozhnikov (2011). Composition of settling particulate matter and element fluxes into Alfonso Basin, La Paz Bay, Gulf of California: 2002-2008 sediment trap time series. 11th International Conference on the Biogeochemistry of Trace Elements. Florence, Italy, Italia, julio 3 - 7, 2011, S6-24.

Composition of settling particulate matter and element fluxes into Alfonso Basin, La Paz Bay, Gulf of California: 2002-2008 sediment trap time series

Konstantin Choumiline, Fernando Aguirre Bahena, Evgueni Shumilin, Norman Silverberg y Dmitry Sapozhnikov

Element fluxes between the reservoirs of the marine environment are studied in order to try to understand biogeochemical cycles of elements. To characterize the behavior of particulate elements in the southwestern Gulf of California and specifically in La Paz Bay, settling particulate matter, collected with a sediment trap during 2002-2008 period was used. Major and trace elements were determined by an instrumental neutron activation analysis. During the registered period a high variability was found as well as almost no periodicity in the total mass flux, composition and particulate element fluxes to the Alfonso Basin. The main sources for the different element contents and fluxes are influenced by terrigenous fluvial supply (tropical cyclone effect), aeolian supply (dust storms), planktonic blooms (marine biogenic supply) and authigenic sources (redox-sensitive element reduction).

Palabras clave: particulate element fluxes; tropical cyclones; planktonic blooms; dust storms; authigenic particles

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