气候变化领域集成服务门户(CCPortal): Age deterimation of sediment cores from the Atlantic Ocean

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.734357
	Age deterimation of sediment cores from the Atlantic Ocean
	Vidal; Laurence; Schneider; Ralph R; Marchal; Olivier; Bickert; Torsten; Stocker; Thomas F; Wefer; Gerold
发布日期	1999-03-02
数据集类型	dataset
英文简介	High resolution benthic oxygen isotope records combined with radiocarbon datings, from cores retrieved in the North, Equatorial, and South Atlantic are used to establish a reliable cronostratigraphy for the last 60 ky. This common temporal framework enables us to study the timing of the sub-Milankovitch climate variability in the entire surface Atlantic during this period, as reflected in planktonic oxygen isotope records. Variations in sea surface temperatures in the Equatorial and South Atlantic reveal two warm periods during the mid-stage 3 which are correlated to the warming observed in the North Atlantic after Heinrich events (HL) 5 and 4. However, the records show that the warming started about 1500 y earlier in the South Atlantic. A zonally averaged ocean circulation model simulates a similar north-south thermal antiphasing between the latitudes of our coring sites, when pertubated by a freshwater flux anomaly. We infer that the observed phase relationship between the northern and the southern Atlantic is related to periods of reduced NADW production in the North Atlantic, such as during HL5 and HL4.
空间范围	Median Latitude: -6.783000 * Median Longitude: -21.249000 * South-bound Latitude: -23.315000 * West-bound Longitude: -43.666667 * North-bound Latitude: 4.238333 * East-bound Longitude: 12.376667
时间范围	1991-05-15T00:00:00 - 1992-01-11T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/226935
推荐引用方式 GB/T 7714	Vidal,Laurence,Schneider,et al. Age deterimation of sediment cores from the Atlantic Ocean.1999-03-02.https://doi.org/10.1594/PANGAEA.734357.