FORAMINIFERAL RECORD OF CHANGES IN SUMMER MONSOON PRECIPITATION AT THE SOUTHEASTERN BRAZILIAN CONTINENTAL MARGIN SINCE THE LAST GLACIAL MAXIMUM

Autor(es)

Gomez Pivel, Maria Alejandra ^[1] ; de Lima Toledo, Felipe Antonio ^[1] ; Costa, Karen Badaraco ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Oceanog, Lab Paleoceanog Atlantico, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Revista Brasileira de Paleontologia; v. 13, n. 2, p. 79-88, MAY-AUG 2010.
• Citações Web of Science: 10

Resumo

Changes in the oxygen isotopic composition of the planktonic foraminifer Globigerinoides ruber and in the foraminifera faunal composition in a core retrieved from the southeastern Brazilian continental margin were used to infer past changes in the hydrological balance and monsoon precipitation in the western South Atlantic since the Last Glacial Maximum (LGM). The results suggest a first-order orbital (precessional) control on the South American Monsoon precipitation. This agrees with previous studies based on continental proxies except for LGM estimates provided by pollen records. The causes for this disagreement are discussed. (AU)

• Processo FAPESP: 04/02819-8 - Paleoceanografia e paleoclimatologia dos ultimos 20.000 anos no atlantico sudoeste.
• Beneficiário: Felipe Antonio de Lima Toledo
• Modalidade de apoio: Auxílio à Pesquisa - Regular