Stable isotopes in the basal silty ice preserved in the Greenland Ice Sheet at summit; environmental implications

International audience Modelling ice sheet behaviour in the context of climatic changes depends on initial and boundary conditions which can be better defined by studying the composition of basal ice. This study deals with basal ice reached by deep drilling at Summit in Central Greenland (GRIP core)...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Souchez, R., Tison, J.-L., Lorrain, R., Lemmens, M., Janssens, L., Stievenard, M., Jouzel, J., Sveinbjörnsdottir, A., Johnsen, S.
Other Authors: Laboratoire de Modélisation du Climat et de l'Environnement (LMCE)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1994
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
Greenland
GRIP
Ice Sheet
Online Access:https://hal.archives-ouvertes.fr/hal-03334842
https://hal.archives-ouvertes.fr/hal-03334842/document
https://hal.archives-ouvertes.fr/hal-03334842/file/grl1994Souchez693.pdf
https://doi.org/10.1029/94GL00641
Description
Summary:International audience Modelling ice sheet behaviour in the context of climatic changes depends on initial and boundary conditions which can be better defined by studying the composition of basal ice. This study deals with basal ice reached by deep drilling at Summit in Central Greenland (GRIP core). The isotopic composition of this ice indicates that ice formed at the ground surface in the absence of the ice sheet largely contributed to its formation. The basal silty ice is a remnant of a growing stage of the ice sheet, possibly the original build up.

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