气候变化领域集成服务门户(CCPortal): The history of South American tropical precipitation for the past 25,000 years

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DOI	10.1126/science.291.5504.640
	The history of South American tropical precipitation for the past 25,000 years
	Baker P.A.; Seltzer G.O.; Fritz S.C.; Dunbar R.B.; Grove M.J.; Tapia P.M.; Cross S.L.; Rowe H.D.; Broda J.P.
发表日期	2001
ISSN	0036-8075
起始页码	640
结束页码	643
卷号	291 期号:5504
英文摘要	Long sediment cores recovered from the deep portions of Lake Titicaca are used to reconstruct the precipitation history of tropical South America for the past 25,000 years. Lake Titicaca was a deep, fresh, and continuously overflowing lake during the last glacial stage, from before 25,000 to 15,000 calibrated years before the present (cal yr B.P.), signifying that during the fast glacial maximum (LGM), the Altiplano of Bolivia and Peru and much of the Amazon basin were wetter than today. The LGM in this part of the Andes is dated at 21,000 cal yr B.P., approximately coincident with the global LGM. Maximum aridity and lowest lake level occurred in the early and middle Holocene (8000 to 5500 cal yr B.P.) during a time of low summer insolation. Today, rising revels of Lake Titicaca and wet conditions in Amazonia are correlated with anomalously cold sea-surface temperatures in the northern equatorial Atlantic. Likewise, during the deglacial and Holocene periods, there were several millennial-scale wet phases on the Altiplano and in Amazonia that coincided with anomalously cold periods in the equatorial and high-latitude North Atlantic, such as the Younger Dryas.
英文关键词	historical perspective; precipitation (climatology); sediment core; tropical meteorology; article; Atlantic Ocean; Bolivia; history; lake; Peru; priority journal; sea; sediment; South America; summer; tropics; Animals; Atmosphere; Bolivia; Diatoms; Fresh Water; Geologic Sediments; Peru; Plankton; Rain; Temperature; Time; Tropical Climate; South America
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242931
作者单位	Duke University, Division of Earth and Ocean Sciences, Durham, NC 27708, United States
推荐引用方式 GB/T 7714	Baker P.A.,Seltzer G.O.,Fritz S.C.,et al. The history of South American tropical precipitation for the past 25,000 years[J],2001,291(5504).
APA	Baker P.A..,Seltzer G.O..,Fritz S.C..,Dunbar R.B..,Grove M.J..,...&Broda J.P..(2001).The history of South American tropical precipitation for the past 25,000 years.Science,291(5504).
MLA	Baker P.A.,et al."The history of South American tropical precipitation for the past 25,000 years".Science 291.5504(2001).