DOI: 10.1016/j.quascirev.2015.10.016
Scopus记录号: 2-s2.0-84945302922
论文题名: Tracking rainfall in the northern Mediterranean borderlands during sapropel deposition
作者: Toucanne S. ; Angue Minto'o C.M. ; Fontanier C. ; Bassetti M.-A. ; Jorry S.J. ; Jouet G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 129 起始页码: 178
结束页码: 195
语种: 英语
英文关键词: Interglacials
; Mediterranean
; Rainfall
; Sapropel
Scopus关键词: Deposition
; Rain
; Storms
; Eastern Mediterranean
; Hydrological changes
; Interglacial periods
; Interglacials
; Mediterranean
; Mediterranean storms
; Sapropel
; Western Mediterranean
; Surface waters
英文摘要: The role of mid-latitude precipitation in the hydrological forcing leading to the deposition of sapropels in the Mediterranean Sea remains unclear. The new GDEC-4-2 borehole, East Corsica margin (northern Tyrrhenian Sea), provides the first precisely dated evidence for enhanced rainfall in the Western Mediterranean during warm intervals of interglacial periods over the last 547 kyr. Comparison of GDEC-4-2 proxy records with pollen sequences and speleothems from the central and eastern Mediterranean reveals that these pluvial events were regional in character and occurred probably in response to the intensification of the Mediterranean storm track along the northern Mediterranean borderlands in autumn/winter. Our dataset suggests that the timing of maxima of the Mediterranean autumn/winter storm track precipitation coincide with that of the North African summer monsoon and sapropel deposition. Besides highlighting a close coupling between mid- and low-latitude hydrological changes, our findings suggest that during warm intervals of interglacial periods the reduced sea-surface water salinities, together with the high flux of nutrient and organic matter, produced by the monsoonal Nile (and wadi-systems) floods, were maintained throughout the winter by the Mediterranean rainfall. This provides an important additional constraint on the hydrological perturbation causing sapropel formation. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59775
Appears in Collections: 过去全球变化的重建
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作者单位: IFREMER, Laboratoire Environnements Sédimentaires, BP70, Plouzané, France; Université de Perpignan, Lab. IMAGES (BatU), 52 Av. P. Alduy, Perpignan, France
Recommended Citation:
Toucanne S.,Angue Minto'o C.M.,Fontanier C.,et al. Tracking rainfall in the northern Mediterranean borderlands during sapropel deposition[J]. Quaternary Science Reviews,2015-01-01,129