Mediterranean moisture source for an early-Holocene humid period in the northern Red Sea

被引：242
作者：
Arz, HW
Lamy, F
Pätzold, J
Müller, PJ
Prins, M
机构：
[1] Univ Bremen, Res Ctr Ocean Margins, DFG, D-28359 Bremen, Germany
[2] Vrije Univ Amsterdam, Fac Earth Sci, NL-1081 HV Amsterdam, Netherlands
来源：
SCIENCE | 2003年 / 300卷 / 5616期
关键词：
D O I：
10.1126/science.1080325
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Paleosalinity and terrigenous sediment input changes reconstructed on two sediment cores from the northernmost Red Sea were used to infer hydrological changes at the southern margin of the Mediterranean climate zone during the Holocene. Between approximately 9.25 and 7.25 thousand years ago, about 3parts per thousand reduced surface water salinities and enhanced fluvial sediment input suggest substantially higher rainfall and freshwater runoff, which thereafter decreased to modern values. The northern Red Sea humid interval is best explained by enhancement and southward extension of rainfall from Mediterranean sources, possibly involving strengthened early-Holocene Arctic Oscillation patterns and a regional monsoon-type circulation induced by increased land-sea temperature contrasts. We conclude that Afro-Asian monsoonal rains did not cross the subtropical desert zone during the early to mid-Holocene.
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收藏
页码：118 / 121
页数：5
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