Weikusat, Ilka; Kipfstuhl, Sepp; Faria, Sérgio H; Azuma, Nobuhiko; Miyamoto, Atsushi (2009): Subgrain boundaries and related microstructural features in EDML (Antarctica) deep ice core [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.807197, Supplement to: Weikusat, I et al. (2009): Subgrain boundaries and related microstructural features in EDML (Antarctica) deep ice core. Journal of Glaciology, 55(191), 461-472, https://doi.org/10.3189/002214309788816614
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Published: 2009 (exact date unknown) • DOI registered: 2013-03-13
Abstract:
Subgrain boundaries revealed as shallow sublimation grooves on ice sample surfaces are a direct and easily observable feature of intracrystalline deformation and recrystallization. Statistical data obtained from the EPICA Dronning Maud Land (EDML) deep ice core drilled in East Antarctica cannot detect a depth region of increased subgrain-boundary formation. Grain-boundary morphologies show a strong influence of internal strain energy on the microstructure at all depths. The data do not support the classical view of a change of dominating recrystallization regimes with depth. Three major types of subgrain boundaries, reflecting high mechanical anisotropy, are specified in combination with crystal-orientation analysis.
Project(s):
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00077: European Project for Ice Coring in Antarctica
Fourth Framework Programme (FP4), grant/award no. ENV4980702: European Project for Ice Coring in Antarctica
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Latitude: -75.002500 * Longitude: 0.068400
Date/Time Start: 2001-01-10T00:00:00 * Date/Time End: 2006-01-17T00:00:00
Event(s):
EDML (EPICA Dronning Maud Land, DML28C01_00) * Latitude: -75.002500 * Longitude: 0.068400 * Date/Time Start: 2001-01-10T00:00:00 * Date/Time End: 2006-01-17T00:00:00 * Elevation: 2891.7 m * Recovery: 2774.15 m * Campaign: EPICA-Campaigns * Basis: Kohnen Station * Method/Device: EPICA drill (EDRILL) * Comment: Elevation is given with reference to WGS84
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Weikusat, I; Kipfstuhl, S; Faria, SH et al. (2009): Mean grain size of ice core EDML. https://doi.org/10.1594/PANGAEA.807132
- Weikusat, I; Kipfstuhl, S; Faria, SH et al. (2009): Subgrain boundaries in EDML ice core. https://doi.org/10.1594/PANGAEA.807196