Chemical characterization of the last 250 years of snow deposition at Talos Dome (East Antarctica)
| Autor: | Emiliano Castellano, Roberto Udisti, O. Largiuni, O. Flora, Silvia Becagli, A. Migliori, Silvia Benassai, Rita Traversi |
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| Rok vydání: | 2004 |
| Předmět: |
geography
geography.geographical_feature_category Health Toxicology and Mutagenesis Firn Public Health Environmental and Occupational Health Soil Science Snow Sea spray Pollution Analytical Chemistry Sedimentary depositional environment Dome (geology) Volcano Environmental Chemistry Physical geography Ice divide Waste Management and Disposal Deposition (chemistry) Geology Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 84:523-536 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310310001640384 |
| Popis: | High-resolution chemical records of main and trace ionic components of snow precipitation over the last 250 years were obtained by analysing the first 36 m of a firn core drilled at Talos Dome, a dome located in the ice divide between northern Victoria Land and Oates Land (East Antarctica Pacific Ocean/Ross Sea sector). The concentration/depth profiles of some relevant chemical parameters are discussed on the basis of a previous stratigraphic dating, set up following the seasonal signatures of non-sea-salt (nss) sulphate deposition and synchronised by using tritium and volcanic temporally known horizons. Particular attention is paid to the study of the temporal trends of the sea spray components (Na+, Cl−, Mg2+) and S and N cycle compounds ( ) to understand the main sources, transport mechanisms and depositional processes of these compounds at the deposition site. Good correlations between the sea spray markers show that the primary marine contribution is relevant, though Talos Dome is located at a relati... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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