NDLI: Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core

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Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core

Content Provider	Semantic Scholar
Author	Durand, Gaël Gillet-Chaulet, Fabien Svensson, Anders Gagliardini, Olivier Kipfstuhl, Sepp Meyssonnier, Jacques Parrenin, Frédéric Duval, Paul Dahl-Jensen, Dorthe
Copyright Year	2007
Abstract	Abstract. The study of the distribution of crystallographic orientations (i.e., the fabric) along ice cores provides information on past and current ice flow in ice-sheets. Besides the usually observed formation of a vertical single maximum fabric, the EPICA Dome C ice core (EDC) shows an abrupt and unexpected strengthening of its fabric during termination II around 1750 m depth. Such strengthening has already been observed for sites located on an ice-sheet flank. This suggests that horizontal shear could occur along the EDC core. Moreover, the change in the fabric leads to a modification of the effective viscosity between neighbouring ice layers. Through the use of an anisotropic ice flow model, we quantify the change in effective viscosity and investigate its implication for ice flow and dating.
Starting Page	155
Ending Page	167
Page Count	13
File Format	PDF HTM / HTML
DOI	10.5194/cp-3-155-2007
Volume Number	3
Alternate Webpage(s)	http://hal.archives-ouvertes.fr/docs/00/33/07/48/PDF/cp-3-155-2007.pdf
Alternate Webpage(s)	https://www.clim-past.net/3/155/2007/cp-3-155-2007.pdf
Alternate Webpage(s)	https://core.ac.uk/download/pdf/52748013.pdf
Alternate Webpage(s)	https://doi.org/10.5194/cp-3-155-2007
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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