A first chronology for the East GReenland Ice-core Project (EGRIP) over the Holocene and last glacial termination

Author:

Mojtabavi SeyedhamidrezaORCID,Wilhelms FrankORCID,Cook ElizaORCID,Davies Siwan,Sinnl Giulia,Skov Jensen Mathias,Dahl-Jensen Dorthe,Svensson AndersORCID,Vinther Bo,Kipfstuhl Sepp,Jones Gwydion,Karlsson Nanna B.ORCID,Faria Sergio Henrique,Gkinis VasileiosORCID,Kjær HelleORCID,Erhardt TobiasORCID,Berben Sarah M. P.,Nisancioglu Kerim H.ORCID,Koldtoft IbenORCID,Rasmussen Sune OlanderORCID

Abstract

Abstract. This paper provides the first chronology for the deep ice core from the East GReenland Ice-core Project (EGRIP) over the Holocene and late last glacial period. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of 373 match points. The NEEM ice core is only used for supporting match-point identification. We name our EGRIP time scale GICC05-EGRIP-1. Over the uppermost 1383.84 m, we establish a depth–age relationship dating back to 14,965 a b2k (years before the year 2000 CE). Tephra horizons provide an independent validation of our match points. In addition, we compare the ratio of annual layer thicknesses between ice cores in-between the match points to assess our results in view of the different ice-flow patterns and accumulation regimes of the different periods and geographical regions. This initial timescale is the basis of interpretation and refinement of the presently derived EGRIP high-resolution data sets of chemical impurities.

Funder

Københavns Universitet

National Science Foundation

Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research

National Institute of Polar Research

Universitetet i Bergen

Bergens Forskningsstiftelse

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Institut Polaire Français Paul Emile Victor

Beijing Normal University

Carlsbergfondet

Ministerio de Ciencia e Innovación

Publisher

Copernicus GmbH

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3