气候变化领域集成服务门户(CCPortal): EPICA Dome C Ice Core Timescales EDC3

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.671367
	EPICA Dome C Ice Core Timescales EDC3
	Parrenin; Frédéric; Loulergue; Laetitia; Wolff; Eric W
发布日期	2007-12-03
数据集类型	dataset
英文简介	The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2) a set of independent age markers along the core. These are obtained by pattern matching of recorded parameters to either absolutely dated paleoclimatic records, or to insolation variations. We show that this new time scale is in excellent agreement with the Dome Fuji and Vostok ice core time scales back to 100 kyr within 1 kyr. Discrepancies larger than 3 kyr arise during MIS 5.4, 5.5 and 6, which points to anomalies in either snow accumulation or mechanical flow during these time periods. We estimate that EDC3 gives accurate event durations within 20% (2 sigma) back to MIS11 and accurate absolute ages with a maximum uncertainty of 6 kyr back to 800 kyr.
空间范围	Latitude: -75.100000 * Longitude: 123.350000
时间范围	1993-01-01T00:00:00 - 2004-12-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	冰冻圈
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/213933
推荐引用方式 GB/T 7714	Parrenin,Frédéric,Loulergue,et al. EPICA Dome C Ice Core Timescales EDC3.2007-12-03.https://doi.org/10.1594/PANGAEA.671367.