DOI: 10.1016/j.palaeo.2013.01.014
论文题名: The Holocene onset in the southwestern South Atlantic
作者: Pivel M.A.G. ; Santarosa A.C.A. ; Toledo F.A.L. ; Costa K.B.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 374 起始页码: 164
结束页码: 172
语种: 英语
英文关键词: Brazilian Continental Margin
; Late Quaternary
; Oxygen isotopes
; Paleosalinity
; Paleotemperature
; Planktonic foraminifera
英文摘要: In this paper we present a paleoceanographic reconstruction of the southwestern South Atlantic for the past 13. kyr based on faunal and isotopic analysis of planktonic foraminifera from a high-resolution core retrieved at the South Brazil Bight continental slope. Our record indicates that oceanographic changes in the southwestern South Atlantic during the onset of the Holocene were comparable in strength to those that occurred during the Younger Dryas. Full interglacial conditions started abruptly after 8.2. kyr. BP with a sharp change in faunal composition and surface hydrography (SST and SSS). Part of the observed events may be explained in terms of changes in thermohaline circulation while the other part suggests a dominant role of winds. Our data indicate that during the Early Holocene upwelling was significantly strengthened in the South Brazil Bight promoting high productivity and preventing the establishment of the typically interglacial menardiiform species. In general terms, oceanographic changes recorded by core KF02 occurred in synchrony with Antarctica's climate. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69797
Appears in Collections: 过去全球变化的重建
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作者单位: Laboratório de Paleoceanografia do Atlântico Sul, Instituto Oceanográfico, Universidade de São Paulo, Brazil; Praça do Oceanográfico, 191 Cidade Universitária, CEP 05508-120, São Paulo, SP, Brazil
Recommended Citation:
Pivel M.A.G.,Santarosa A.C.A.,Toledo F.A.L.,et al. The Holocene onset in the southwestern South Atlantic[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,374