Evolution of the Texture along the EPICA Dome C Ice Core

Durand, Gaël; Svensson, Anders; Persson, Asbjørn; Gagliardini, Olivier; Gillet-Chaulet, Fabien; Sjolte, Jesper; Montagnat, Maurine; Dahl-Jensen, Dorthe

Evolution of the Texture along the EPICA Dome C Ice Core

Durand, Gaël; Svensson, Anders; Persson, Asbjørn et al.

低温科学, 2009, 68(Supplement), 91-105

Permalink : https://hdl.handle.net/2115/45436

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アクセス権	open access
URI	https://hdl.handle.net/2115/45436
タイトル	Evolution of the Texture along the EPICA Dome C Ice Core
著者	Durand, Gaël ; Svensson, Anders ; Persson, Asbjørn ; Gagliardini, Olivier ; Gillet-Chaulet, Fabien ; Sjolte, Jesper ; Montagnat, Maurine ; Dahl-Jensen, Dorthe
著者名 Durand, Gaël
著者名 Svensson, Anders
著者名 Persson, Asbjørn
著者名 Gagliardini, Olivier
著者名 Gillet-Chaulet, Fabien
著者名 Sjolte, Jesper
著者名 Montagnat, Maurine
著者名 Dahl-Jensen, Dorthe
言語	英語
キーワード	EPICA Dome C ice core
	texture
	anisotropy
	recrystallization processes
発行日	2009-12
出版者	Institute of Low Temperature Science, Hokkaido University
収録物名	低温科学
収録物名	Low Temperature Science
巻(号)	68(Supplement)
ページ	91-105
記述	I. Microphysical properties, deformation, texture and grain growth
抄録	New measurements of ice texture made along the EPICA Dome C ice core, together with a review of previous studies of fabric and microstructure, are presented. Mean grain size increases steadily with age, and so depth. However, sharp decreases are observed contemporary with each climatic termination. These sharp decreases are believed to be mainly driven by the change in dust content between glacial and interglacial periods. C-axes steadily clustered with depth toward a vertical single maximum. However, a sharp clustering of the fabric is observed during termination II (≈ 1750 m), suggesting the presence of shear in the upper part of the core. Moreover, below 2812 m, large variations of the fabric are observed from sample to sample. Migration recrystallization may affect the ice polycrystal for the lowest part of the core.
資源タイプ	紀要論文
出版タイプ	Version of Record
PISSN	1880-7593
関連情報 (isPartOf)	Title Physics of Ice Core Records II : Papers collected after the 2nd International Workshop on Physics of Ice Core Records, held in Sapporo, Japan, 2-6 February 2007. Edited by Takeo Hondoh