globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.04.024
论文题名:
Millennial scale coccolithophore paleoproductivity and surface water changes between 445 and 360ka (Marine Isotope Stages 12/11) in the Northeast Atlantic
作者: Palumbo E.; Flores J.A.; Perugia C.; Petrillo Z.; Voelker A.H.L.; Amore F.O.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 383-384
起始页码: 27
结束页码: 41
语种: 英语
英文关键词: Coccolithophore Paleoproductivity ; Middle Pleistocene ; Millennial-scale variability ; Northeast Atlantic Ocean ; Wavelet analysis
英文摘要: A high resolution coccolithophore study was carried out in order to improve the understanding of the paleoceanographic evolution and changes in paleoproductivity occurring off the Iberian Margin (IM) between 445 and 360. ka, i.e. during late Marine Isotope Stage 12 to 11. Coccolithophore assemblages allowed reconstructing surface water changes characterized by millennial-scale oscillations (~. 1.5. kyr cycles) involving Portugal or Iberian Poleward Currents (PC and IPC) prevalence. Changes in paleoproductivity, possibly related to the upwelling of Eastern North Atlantic Central Waters (ENACW) - of sub-tropical (ENACWst) or sub-polar origin (ENACWsp) - were also recognized. This study also permitted detecting abrupt events (stadial/interstadial-type oscillations) and revealed that changes in paleoproductivity are related to opposite dynamics during glacial and interglacial stages, with the reversed setting being established during the deglaciation. Furthermore, a possible control of half and fourth precessional cycle components, on the occurrence of abrupt changes within the assemblages' structure, during the deglaciation, is proposed on the basis of wavelet analysis results applied to selected taxa. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69715
Appears in Collections:过去全球变化的重建

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作者单位: DSBGA, Università del Sannio, Via dei Mulini 59a, 82100, Benevento, Italy; Universidad de Salamanca, Departamento de Geología, Salamanca, Spain; Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli, via Diocleziano 328, 80124 Napoli, Italy; Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos, 1749-077 Lisbon, Portugal; CIMAR Associated Laboratory, 4050-123 Porto, Portugal

Recommended Citation:
Palumbo E.,Flores J.A.,Perugia C.,et al. Millennial scale coccolithophore paleoproductivity and surface water changes between 445 and 360ka (Marine Isotope Stages 12/11) in the Northeast Atlantic[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,383-384
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