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Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
低温科学 = Low Temperature Science >
vol. 68, Supplement Issue >
Deformation Microstructures in an Antarctic Ice Core (EDML) and in Experimentally Deformed Artificial Ice
| Title: | Deformation Microstructures in an Antarctic Ice Core (EDML) and in Experimentally Deformed Artificial Ice |
| Authors: | Weikusat, Ilka Browse this author | | Kipfstuhl, Sepp Browse this author | | Azuma, Nobuhiko Browse this author | | Faria, Sérgio H. Browse this author | | Miyamoto, Atsushi Browse this author |
| Keywords: | low angle grain boundary | | creep test | | dynamic recrystallization | | recovery | | sublimation grooves |
| Issue Date: | Dec-2009 |
| Publisher: | Institute of Low Temperature Science, Hokkaido University |
| Citation: | 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 |
| Journal Title: | 低温科学 |
| Journal Title(alt): | Low Temperature Science |
| Volume: | 68 |
| Issue: | Supplement |
| Start Page: | 115 |
| End Page: | 123 |
| Abstract: | 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. |
| Description: | I. Microphysical properties, deformation, texture and grain growth |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/45438 |
| Appears in Collections: | 低温科学 = Low Temperature Science > vol. 68, Supplement Issue
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Submitter: 低温科学研究所図書室
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