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Your search keyword '"Tositti, L."' showing total 22 results
Start Over Author "Tositti, L." Publisher elsevier bv
22 results on '"Tositti, L."'

1. Influence of atmospheric circulation and local parameters on activity concentration of gross alpha and gross beta in Granada, Spain

Author

Berriban, I., primary, Chham, E., additional, Nouayti, Abdelhamid, additional, Azahra, M., additional, Orza, J.A.G., additional, Ziani, H., additional, El Ghalbzouri, T., additional, El Bardouni, T., additional, Hadouachi, M., additional, Milena-Pérez, A., additional, Piñero-García, F., additional, Tositti, L., additional, Brattich, E., additional, Ben Maimoun, I., additional, and Ferro- García, M.A., additional

Published
2023
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2. PSCF and CWT methods as a tool to identify potential sources of 7Be and 210Pb aerosols in Granada, Spain

Author

Berriban, I., primary, Azahra, M., additional, Chham, E., additional, Ferro-García, M.A., additional, Milena-Pérez, A., additional, Nouayti, A., additional, Orza, J.A.G., additional, Brattich, E., additional, Tositti, L., additional, Piñero-García, F., additional, El Bardouni, T., additional, Ziani, H., additional, El Yaakoubi, H., additional, and El Barbari, M., additional

Published
2022
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7. Long-term surface ozone variability at Mt. Cimone WMO/GAW global station (2165 m a.s.l., Italy)

Author

Cristofanelli, P., primary, Scheel, H.-E., additional, Steinbacher, M., additional, Saliba, M., additional, Azzopardi, F., additional, Ellul, R., additional, Fröhlich, M., additional, Tositti, L., additional, Brattich, E., additional, Maione, M., additional, Calzolari, F., additional, Duchi, R., additional, Landi, T.C., additional, Marinoni, A., additional, and Bonasoni, P., additional

Published
2015
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21. The western Mediterranean basin as an aged aerosols reservoir. Insights from an old-fashioned but efficient radiotracer

Author

Erika Brattich, Laura Tositti, J.A.G. Orza, Miguel Ángel Hernández-Ceballos, Juan Pedro Bolívar, Brattich, E., Hernández-Ceballos, M.A., Orza, J.A.G., Bolívar, J.P., and Tositti, L

Subjects
Hydrology, Atmospheric Science, Radionuclide, Saharan dust, 010504 meteorology & atmospheric sciences, Residence time, Mediterranean basin, 010501 environmental sciences, Mineral dust, radiotracer, 01 natural sciences, Mediterranean Basin, source identification, Northern italy, Aerosol, PM10, Mediterranean sea, PSCF, Physical geography, Geology, 210Pb, 0105 earth and related environmental sciences, General Environmental Science
Abstract

The long-term contemporary 210Pb time series acquired during the period 2004–2011 at two distant sites of different altitude in the Mediterranean basin, El Arenosillo (40 m a.s.l. in southwestern Spain) and Mt. Cimone (2165 m a.s.l. in northern Italy), are analyzed and compared. Besides being considered a tracer of continental air masses, 210Pb radionuclide is also a proxy of fine stable aerosol. For this reason, the measurements of PM10 mass concentrations collected at the same time and the corresponding 210Pb/PM10 ratio at the two sites are considered to gain better insights into the origin and size of the particles. Three statistical trajectory methods are applied to identify and characterize the 210Pb source regions at the two sites. The three methods yield similar outcomes in the source identification, which strengthens the robustness of our results. In addition to the importance of the transport from areas of continental Europe, this study highlights the relevant role of the Mediterranean Sea as a major 210Pb reservoir layer associated to the aged air masses that accumulate in the western Mediterranean basin. The analysis of the sources points out the significant influence of northern Africa to 210Pb increases at both sites as well, even though the most intensive episodes are not of Saharan origin.

Published
2016

22. A multitracer study of peat profiles from Tunguska, Siberia

Author

M. Mingozzi, M.C. Buoso, Laura Tositti, M. De Poli, Daniele Ceccato, Silvia Sandrini, Luisa Forlani, D. Zafiropoulos, P.I. MARTINI, Tositti L., Forlani L., Buoso C., De Poli M., Sandrini S., baldacci D., Longo G., Mingozzi M., L. Tositti, M. Mingozzi, S. Sandrini, L. Forlani, M.C. Buoso, M. De Poli, D. Ceccato, and D.Zafiropoulos

Subjects
Hydrology, Palynology, Global and Planetary Change, Radionuclide, geography, geography.geographical_feature_category, Peat, SIBERIA, biology, Taiga, Geochemistry, Environmental pollution, Oceanography, biology.organism_classification, Sphagnum, ENVIRONMENTAL ARCHIVES, Mire, PIXE, TUNGUSKA, PEAT BOG, PEAT BOGS, 210PB DATING, Bog, Geology
Abstract

Two peat columns from Tunguska (Siberia) were analysed for pollen, spores, charcoal, trace elements and γ-emitters in order to identify the fingerprints of the impact of a still unidentified cosmic body (TCB), which occurred in the summer of 1908, and the level of environmental pollution in a background area of central Siberia. Peat layers were subject to non-destructive γ-ray spectrometry to derive radiochronology by the excess 210Pb method. The age-to-depth relationship was crosschecked by using both 1963 horizon of 137Cs associated to maximum global fallout deposition and palynological data profiles. Vertical distributions of trace elements in the peat columns were obtained by PIXE multielemental analysis allowing determination of the levels of environmental contamination in a background region of the Siberian taiga. The association of heavy metals such as Ni, Co and Cu in the profiles suggests the connection of the area with mining and metal smelting activity in the north of the region through atmospheric circulation. As concerns global scale contamination, the inventory of the artificial radionuclide 137Cs (4.6 kBq m− 2) shows a value typical of remote slightly contaminated areas resulting from global scale redistribution of radioactive fallout from Cold War nuclear weapon testing. The atmospheric inventory of the natural radionuclide 210Pb, for which a mean annual flux of 200 Bq m− 2 yr− 1 has been calculated, is typical of continental regions. The influence of Tunguska Cosmic Body in the peat is recognizable by a large discontinuity in the palynological profile of the peat monolith at a depth coinciding with the 1908 layer as determined by the 210Pb technique, showing a large peak of total pollen counting attributed to the impact of the shockwave on the area in which huge tree stands were destroyed. Following the event, tree pollen concentration decreases abruptly showing the temporary inception of a mire environment with an increase of Sphagnum spore concentrations. Results of elemental analysis so far available do not show anomalies in the concentration profiles at depths coinciding with the Tunguska event layer indicating the need for pre-concentration technique enabling the detection of element associations typical of extraterrestrial materials.

Published
2006

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