Dome Concordia ice microstructure: impurities effects on grain growth

We present a detailed analysis of the microstructure in the shallow part (100-580 m) of the European Project for Ice Coring in Antarctica (EPICA) ice core at Dome Concordia. In the Holocene ice, the average grain-size increases with depth. This is the normal grain-growth process driven by a reductio...

Full description

Bibliographic Details
Main Authors: Weiss, J., Vidot, J., Gay, M., Arnaud, L., Duval, P., Petit, J.
Other Authors: LABORATOIRE DE GLACIOLOGIE CNRS SAINT MARTIN D'HERES, CEMAGREF GRENOBLE ETGR, -
Format: Article in Journal/Newspaper
Language:English
Published: 2002
Subjects:
NEIGE
GRAIN DE NEIGE
DIMENSIONNEMENT
EPICA
SNOW
DESIGN
Antarc*
Antarctica
Antarctique*
ice core
Online Access:https://irsteadoc.irstea.fr/cemoa/PUB00011404
Description
Summary:We present a detailed analysis of the microstructure in the shallow part (100-580 m) of the European Project for Ice Coring in Antarctica (EPICA) ice core at Dome Concordia. In the Holocene ice, the average grain-size increases with depth. This is the normal grain-growth process driven by a reduction of the total grain-boundary energy. Deeper, associated with the Holocene-Last Glacial Maximum (LGM) climatic transition, a sharp decrease of the average grain-size is observed.

Similar Items