Resumo

LOSS, Arcângelo; ROSSI, Celeste Queiroz  e  FRANCELINO, Marcio Rocha. The origin of salinity in the Antarctic Continent. Rev. de Ciências Agrárias [online]. 2010, vol.33, n.2, pp.106-117. ISSN 0871-018X.

The Antarctica is the most perfect natural laboratory to study the planet from environmental changes. From this premise, this study was to conduct a review on the origin of salts in the Antarctic, and detailed the main forms and sources occurring salt. In literature, this topic is of great discussion, and reported that the origin of salts may be due to precipitation, rock weathering, marine (salt spray), biologically produced sulfates or hydrothermal activity. Overall, this review allows us to infer various sources of water-soluble salts in soils of Antarctica. Near the coast, marine influences are dominant, covering up any contributions from weathering of rocks. But for the interior, the influence of weathering is more evident, while the influence of atmospheric circulation becomes more important as well. We also emphasize the importance of the contribution in the continental input of salts in glacial periods.

Palavras-chave : Antartica; continental contribution; chemical precipitation; emissions biological; sea spray.

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