干旱区生态环境知识资源中心(Arid): Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data

Arid

DOI	10.1017/qua.2019.71
	Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data
	Beuscher, Sarah; Ehrmann, Werner; Krueger, Stefan; Schmiedl, Gerhard
通讯作者	Beuscher, S (corresponding author), Univ Leipzig, Inst Geophys & Geol, Leipzig, Germany.
来源期刊	QUATERNARY RESEARCH
ISSN	0033-5894
EISSN	1096-0287
出版年	2020
卷号	94 页码:156-173
英文摘要	Endmember modelling on the terrigenous silt fraction of nine marine sediment cores spanning up to 180,000 years reveals the influx of North African dust into the Eastern Mediterranean Sea. The dust grain size modes decrease with transport distance, from >50 mu m off the African coast to ca. 30 mu m in the Aegean Sea. The dust signal is strongly influenced by hydrological changes in northern Africa. Changes from arid to humid periods are documented in the grain size data of all cores. The climatic signal gets weaker with growing distance from the source and close to large fluvial sediment sources such as the Nile. Frequency and wavelet analyses show a strong orbital precession signal that is known to trigger the migration of the monsoonal rain belt in northern Africa. The influence of climate changes on suborbital time scales on dust influx is less distinct, but Dansgaard-Oeschger interstadials and Heinrich-like events are documented in some cores. In the sediment core closest to the source, three endmembers represent one or more dust sources in northern Africa. With growing distance from the source, the three modes cannot be separated anymore and appear as one multimodal dust endmember.
英文关键词	Saharan dust African humid periods Eastern Mediterranean Sea Silt grain size Endmember modelling
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000616368300010
WOS关键词	LATE QUATERNARY ; AFRICAN MONSOON ; NORTH-ATLANTIC ; DESERT DUST ; DEEP-SEA ; OPTICAL-PROPERTIES ; SIMULATED CLIMATE ; SAPROPEL RECORD ; CLAY-MINERALS ; AEGEAN SEA
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349141
作者单位	[Beuscher, Sarah; Ehrmann, Werner; Krueger, Stefan] Univ Leipzig, Inst Geophys & Geol, Leipzig, Germany; [Schmiedl, Gerhard] Univ Hamburg, Ctr Erdsystemforsch & Nachhaltigkeit, Hamburg, Germany
推荐引用方式 GB/T 7714	Beuscher, Sarah,Ehrmann, Werner,Krueger, Stefan,et al. Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data[J],2020,94:156-173.
APA	Beuscher, Sarah,Ehrmann, Werner,Krueger, Stefan,&Schmiedl, Gerhard.(2020).Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data.QUATERNARY RESEARCH,94,156-173.
MLA	Beuscher, Sarah,et al."Reconstructing Saharan dust transport to the Eastern Mediterranean Sea during the last 180 ka using endmember modelling of grain size data".QUATERNARY RESEARCH 94(2020):156-173.