DOI: 10.1016/j.palaeo.2015.11.009
论文题名: Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate
作者: Capotondi L. ; Girone A. ; Lirer F. ; Bergami C. ; Verducci M. ; Vallefuoco M. ; Afferri A. ; Ferraro L. ; Pelosi N. ; De Lange G.J.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 442 起始页码: 72
结束页码: 83
语种: 英语
英文关键词: Central Mediterranean
; Middle Pleistocene
; Paleoceanographic changes
; Planktonic foraminifera
英文摘要: Planktonic foraminiferal assemblages were studied at high-resolution in core KC01B from the Ionian Sea. Quantitative analysis allowed us to distinguish the main climatic features and associated paleoceanographic changes, that occurred between Marine Isotopic Stages (MIS) 13 and 9 (~500-300 ka). MIS 12 and MIS 10 are characterized by relatively temperate conditions and an oligotrophic oceanographic regime in the early part and by colder conditions and nutrient supply in the sub-surface water masses in the upper part. During these intervals, small but distinct peaks of Neogloboquadrina pachyderma sinistral (sin) are detected at times of extremely negative values of the planktonic foraminifera paleoclimatic curve. Their co-occurrence with similar episodes in the Atlantic suggests that the climate in the Central Mediterranean was associated with north-Atlantic millennial-scale climate instability. MIS 11 and MIS 9 are dominated by surficial warm-water taxa. The climate optimum is reached in the middle part of each of these stages, as denoted by the presence of Globigerinoides sacculifer, and persists for approximately 20 and 6ka during MIS 11 and MIS 9 respectively. This warming is not constant but is characterized by three distinct intervals with elevated winter temperatures and/or weak winter mixing. Distribution of Globigerina bulloides, Turborotalita quinqueloba and N. pachyderma dextral (dex) indicates that significant environmental changes occur across the transitions from glacial to interglacial MIS 12/MIS 11 (Termination V) and MIS 10/MIS 9 (Termination IV). The studied record documents a close linkage between Mediterranean climate evolution and higher- and lower-latitude climate change throughout MIS 13-9. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68620
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: CNR, Istituto Scienze Marine (ISMAR), Via Gobetti 101, Bologna, Italy; Dipartimento di Scienze della Terra e Geoambientali, Università di Bari Aldo Moro, Italy; CNR, Istituto per l'Ambiente Marino Costiero (IAMC), Calata Porta di Massa, Interno Porto di Napoli, Napoli, Italy; CNR, Institute of Agro-environmental and Forest Biology (IBAF), Italy; Dipartimento di Scienze della Terra, Università di Siena, Italy; Department of Earth Sciences, Geochemistry, Faculty of Geosciences, Utrecht University, Netherlands
Recommended Citation:
Capotondi L.,Girone A.,Lirer F.,et al. Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,442