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Late Holocene covariability of the southern westerlies and sea surface temperature in northern Chilean Patagonia ArchiMer
Bertrand, Sebastien; Hughen, Konrad; Sepulveda, Julio; Pantoja, Silvio.
The climate of Chilean Patagonia is strongly influenced by the southern westerlies, which control the amount and latitudinal distribution of precipitation in the southern Andes. In austral summer, the Southern Westerly Wind Belt (SWWB) is restricted to the high latitudes. It expands northward in winter, which results in a strong precipitation seasonality between similar to 35 and 45 degrees S. Here, we present a new precipitation seasonality proxy record from Quitralco fjord (46 degrees S), where relatively small latitudinal shifts of the SWWB result in large changes in precipitation seasonality. Our 1400 yr record is based on sedimentological and geochemical data obtained on a sediment core collected in front of a small river that drains the Patagonian...
Tipo: Text Palavras-chave: Southern westerlies; Inorganic geochemistry; Paleohydrology; Paleohydroclimatology; Fjord sediments; Southern South America; Chilean Patagonia.
Ano: 2014 URL:
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