干旱区生态环境知识资源中心(Arid): Enhanced Mediterranean water cycle explains increased humidity during MIS 3 in North Africa

Arid

DOI	10.5194/cp-15-1757-2019
	Enhanced Mediterranean water cycle explains increased humidity during MIS 3 in North Africa
	Rogerson, Mike 1; Dublyansky, Yuri 2; Hoffmann, Dirk L.3; Luetscher, Marc 2,4; Toechterle, Paul 2; Spoetl, Christoph 2
通讯作者	Rogerson, Mike
来源期刊	CLIMATE OF THE PAST
ISSN	1814-9324
EISSN	1814-9332
出版年	2019
卷号	15 期号:5 页码:1757-1769
英文摘要	We report a new fluid inclusion dataset from northeastern Libyan speleothem SC-06-01, which is the largest speleothem fluid inclusion dataset for North Africa to date. The stalagmite was sampled in Susah Cave, a low-altitude coastal site, in Cyrenaica, on the northern slope of the Jebel Al-Akhdar. Speleothem fluid inclusions from the latest Marine Isotope Stage (MIS) 4 and throughout MIS 3 (similar to 67 to similar to 30 kyr BP) confirm the hypothesis that past humid periods in this region reflect westerly rainfall advected through the Atlantic storm track. However, most of this moisture was sourced from the western Mediterranean, with little direct admixture of water evaporated from the Atlantic. Moreover, we identify a second moisture source likely associated with enhanced convective rainfall within the eastern Mediterranean. The relative importance of the western and eastern moisture sources seems to differ between the humid phases recorded in SC-06-01. During humid phases forced by precession, fluid inclusions record compositions consistent with both sources, but the 52.5-50.5 kyr interval forced by obliquity reveals only a western source. This is a key result, showing that although the amount of atmospheric moisture advections changes, the structure of the atmospheric circulation over the Mediterranean does not fundamentally change during orbital cycles. Consequently, an arid belt must have been retained between the Intertropical Convergence Zone and the midlatitude winter storm corridor during MIS 3 pluvials.
类型	Article
语种	英语
国家	England ; Austria ; Germany ; Switzerland
开放获取类型	Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000486650300003
WOS关键词	MIDDLE STONE-AGE ; ATLANTIC OSCILLATION ; OXYGEN ISOTOPES ; STABLE-ISOTOPE ; KHARGA OASIS ; SEA-LEVEL ; CLIMATE ; SAHARA ; EASTERN ; PRECIPITATION
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214922
作者单位	1.Univ Hull, Sch Environm Sci, Cottingham Rd, Kingston Upon Hull HU6 7RX, N Humberside, England; 2.Univ Innsbruck, Inst Geol, Innrain 52, A-6020 Innsbruck, Austria; 3.Max Planck Inst Evolutionary Anthropol, Dept Human Evolut, Deutsch Pl 6, D-04103 Leipzig, Germany; 4.Swiss Inst Speleol & Karst Studies ISSKA, Rue Serre 68, CH-2300 La Chaux De Fonds, Switzerland
推荐引用方式 GB/T 7714	Rogerson, Mike,Dublyansky, Yuri,Hoffmann, Dirk L.,et al. Enhanced Mediterranean water cycle explains increased humidity during MIS 3 in North Africa[J],2019,15(5):1757-1769.
APA	Rogerson, Mike,Dublyansky, Yuri,Hoffmann, Dirk L.,Luetscher, Marc,Toechterle, Paul,&Spoetl, Christoph.(2019).Enhanced Mediterranean water cycle explains increased humidity during MIS 3 in North Africa.CLIMATE OF THE PAST,15(5),1757-1769.
MLA	Rogerson, Mike,et al."Enhanced Mediterranean water cycle explains increased humidity during MIS 3 in North Africa".CLIMATE OF THE PAST 15.5(2019):1757-1769.