Consistent dating for Antarctic and Greenland ice cores
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Consistent dating for Antarctic and Greenland ice cores. / Lemieux-Dudon, Bénédicte; Blayo, Eric; Petit, Jean Robert; Waelbroeck, Claire; Svensson, Anders; Ritz, Catherine; Barnola, Jean Marc; Narcisi, Bianca Maria; Parrenin, Frédéric.
In: Quaternary Science Reviews, Vol. 29, No. 1-2, 01.01.2010, p. 8-20.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Consistent dating for Antarctic and Greenland ice cores
AU - Lemieux-Dudon, Bénédicte
AU - Blayo, Eric
AU - Petit, Jean Robert
AU - Waelbroeck, Claire
AU - Svensson, Anders
AU - Ritz, Catherine
AU - Barnola, Jean Marc
AU - Narcisi, Bianca Maria
AU - Parrenin, Frédéric
PY - 2010/1/1
Y1 - 2010/1/1
N2 - We are hereby presenting a new dating method based on inverse techniques, which aims at calculating consistent gas and ice chronologies for several ice cores. The proposed method yields new dating scenarios simultaneously for several cores by making a compromise between the chronological information brought by glaciological modeling (i.e., ice flow model, firn densification model, accumulation rate model), and by gas and ice stratigraphic constraints. This method enables us to gather widespread chronological information and to use regional or global markers (i.e., methane, volcanic sulfate, Beryllium-10, tephra layers, etc.) to link the core chronologies stratigraphically. Confidence intervals of the new dating scenarios can be calculated thanks to the probabilistic formulation of the new method, which takes into account both modeling and data uncertainties. We apply this method simultaneously to one Greenland (NGRIP) and three Antarctic (EPICA Dome C, EPICA Dronning Maud Land, and Vostok) ices cores, and refine existent chronologies. Our results show that consistent ice and gas chronologies can be derived for depth intervals that are well-constrained by relevant glaciological data. In particular, we propose new and consistent dating of the last deglaciation for Greenland and Antarctic ice and gas records.
AB - We are hereby presenting a new dating method based on inverse techniques, which aims at calculating consistent gas and ice chronologies for several ice cores. The proposed method yields new dating scenarios simultaneously for several cores by making a compromise between the chronological information brought by glaciological modeling (i.e., ice flow model, firn densification model, accumulation rate model), and by gas and ice stratigraphic constraints. This method enables us to gather widespread chronological information and to use regional or global markers (i.e., methane, volcanic sulfate, Beryllium-10, tephra layers, etc.) to link the core chronologies stratigraphically. Confidence intervals of the new dating scenarios can be calculated thanks to the probabilistic formulation of the new method, which takes into account both modeling and data uncertainties. We apply this method simultaneously to one Greenland (NGRIP) and three Antarctic (EPICA Dome C, EPICA Dronning Maud Land, and Vostok) ices cores, and refine existent chronologies. Our results show that consistent ice and gas chronologies can be derived for depth intervals that are well-constrained by relevant glaciological data. In particular, we propose new and consistent dating of the last deglaciation for Greenland and Antarctic ice and gas records.
UR - http://www.scopus.com/inward/record.url?scp=73549125160&partnerID=8YFLogxK
U2 - 10.1016/j.quascirev.2009.11.010
DO - 10.1016/j.quascirev.2009.11.010
M3 - Journal article
AN - SCOPUS:73549125160
VL - 29
SP - 8
EP - 20
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
SN - 0277-3791
IS - 1-2
ER -
ID: 229311467