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A tentative chronology for the EPICA Dome Concordia Ice Core
Author(s) -
Schwander Jakob,
Jouzel Jean,
Hammer Claus U.,
Petit JeanRobert,
Udisti Roberto,
Wolff Eric
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl011981
Subject(s) - younger dryas , geology , ice core , firn , chronology , glacial period , volcano , holocene , dome (geology) , physical geography , last glacial maximum , ice age , ice stream , little ice age , climatology , geomorphology , glacier , paleontology , cryosphere , geography , sea ice
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 10 Be, 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.