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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/8353

Title: Astronomical forcing of contrasting rainfall changes in tropical South America between 12,400 and 8800 cal yr BP
Other Titles: Quaternary Research
Authors: Martin, Louis
Bertaux, Jacques
Corrège, Thierry
Ledru, Marie Pierre
Mourguiart, Philippe
Sifeddine, Abdelfettah
Soubiès, François
Wirrmann, Denis
Suguio, Kenitiro
Turcq, Bruno
Issue Date: 1997
Abstract: Today, precipitation over tropical South America is largely controlled by the seasonal movements of the Inter-Tropical Convergence Zone (ITCZ). During the summer, the ITCZ is shifted southward due to the warming of the continent. Paleoclimate data from southeastern Amazonia and the central Andes indicate that these two areas evolved similarly during the last 30,000 yr. However, between 12,400 and 8800 cal yr B.P., eastern Amazonia received substantial moisture whereas the Bolivian Altiplano was arid. This suggests that the ITCZ during summer was then farther north than it is today.
Description: Texto completo: acesso restrito. p.117–122
URI: http://www.repositorio.ufba.br/ri/handle/ri/8353
ISSN: 0033-5894
Appears in Collections:Artigos Publicados em Periódicos (IGEO)

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