A tentative chronology for the EPICA Dome Concordia ice core

被引:97
|
作者
Schwander, J
Jouzel, J
Hammer, CU
Petit, JR
Udisti, R
Wolff, E
机构
[1] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland
[2] CEA Orme Merisiers Saclay, UMR CEA CNRS, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France
[3] Univ Copenhagen, Dept Geophys, Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[4] CNRS, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France
[5] Univ Calabria, Dept Chem, I-87030 Arcavacata Di Rende, Cosenza, Italy
[6] British Antarctic Survey, NERC, Cambridge CB3 0ET, England
关键词
D O I
10.1029/2000GL011981
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A tentative age scale (EDC1) for the last 45 kyr is established for the new 788-m EPICA Dome C ice core using a simple ice flow model. The age of volcanic eruptions, the end of the Younger Dryas event, and the estimated depth and age of elevated Be-10, about 41 kyr ago were used to calibrate the model parameters. The uncertainty of EDC1 is estimated to +/- 10 yr for 0 to 700 yr BP, up to +/- 200 yr back to 10 kyr BP, and up to +/- 2 kyr back to 41 kyr BP. The age of the air in the bubbles is calculated with a firn densification model. In the Holocene the air is about 2000 yr younger than the ice and about 5500 yr during the last glacial maximum.
引用
收藏
页码:4243 / 4246
页数:4
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