Deformation Microstructures in an Antarctic Ice Core (EDML) and in Experimentally Deformed Artificial Ice

Weikusat, Ilka; Kipfstuhl, Sepp; Azuma, Nobuhiko; Faria, Sérgio H.; Miyamoto, Atsushi

Deformation Microstructures in an Antarctic Ice Core (EDML) and in Experimentally Deformed Artificial Ice

Weikusat, Ilka; Kipfstuhl, Sepp; Azuma, Nobuhiko et al.

低温科学, 2009, 68(Supplement), 115-123

Permalink : https://hdl.handle.net/2115/45438

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アクセス権	open access
URI	https://hdl.handle.net/2115/45438
タイトル	Deformation Microstructures in an Antarctic Ice Core (EDML) and in Experimentally Deformed Artificial Ice
著者	Weikusat, Ilka ; Kipfstuhl, Sepp ; Azuma, Nobuhiko ; Faria, Sérgio H. ; Miyamoto, Atsushi
著者名 Weikusat, Ilka
著者名 Kipfstuhl, Sepp
著者名 Azuma, Nobuhiko
著者名 Faria, Sérgio H.
著者名 Miyamoto, Atsushi
言語	英語
キーワード	low angle grain boundary
	creep test
	dynamic recrystallization
	recovery
	sublimation grooves
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	115-123
記述	I. Microphysical properties, deformation, texture and grain growth
抄録	Deformation microstructures in an Antarctic ice core (EDML) and in experimentally deformed artificial ice, which together comprise a great variety of conditions and parameters, are reconsidered and compared. Data presented here cover grain substructure and shape. Despite the different flow conditions surprising similarities in these observations indicate intracrystalline slip as the deformation carrier in natural as well as in experimentally deformed ice. Similar subgrain-boundary shapes and arrangements in both cases indicate characteristic types, which suggest that non-basal dislocations may play a significant role in the deformation of ice. Subgrain-boundary density and grain-boundary shapes show that a difference between processes in creep tests and in the Antarctic ice sheet is the efficiency of recovery and dynamic recrystallization.
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