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Article Dans Une Revue Geophysical Research Letters Année : 2006

Gas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion

Résumé

Environmental conditions prevailing during build-up of the Greenland Ice Sheet (GIS) are not yet established. Here we use results from gas isotopes from basal ice of the GRIP ice core to show that central Greenland was vegetated during invasion by the ice sheet. The δ 13CCH4 and δ 18O of O2 values obtained were never encountered before in ice core studies. Such values are indeed the signature of a significant biological activity.

Domaines

Glaciologie
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Dates et versions

insu-00375763 , version 1 (17-09-2020)

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Roland Souchez, Jean Jouzel, Amaelle Landais, Jérôme Chappellaz, Reginald Lorrain, et al.. Gas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion. Geophysical Research Letters, 2006, 33 (24), ⟨10.1029/2006GL028424⟩. ⟨insu-00375763⟩
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