Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core
Abstract: A study of c-axis orientations in the upper 1500 m of the Dome C deep ice core has been carried out using an automatic ice fabric analyzer (AIFA). 29 vertical and a few horizontal thin sections from different depths in the core have been analyzed. Presentation of the fabric data and result...
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ftawi:oai:epic.awi.de:10255 2023-09-05T13:12:04+02:00 Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core Wang, Yongbo Kipfstuhl, Sepp Azuma, N. Thorsteinsson, T. Miller, Heinrich 2003 https://epic.awi.de/id/eprint/10255/ https://hdl.handle.net/10013/epic.20745 unknown Wang, Y. , Kipfstuhl, S. , Azuma, N. , Thorsteinsson, T. and Miller, H. (2003) Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core , Annals of glaciology, 37 , pp. 97-104 . hdl:10013/epic.20745 EPIC3Annals of glaciology, 37, pp. 97-104 Article isiRev 2003 ftawi 2023-08-22T19:48:34Z Abstract: A study of c-axis orientations in the upper 1500 m of the Dome C deep ice core has been carried out using an automatic ice fabric analyzer (AIFA). 29 vertical and a few horizontal thin sections from different depths in the core have been analyzed. Presentation of the fabric data and resulting parameters is in accordance with new standards developed for automatic ice fabric analyzers. The fabric diagrams display a near-random c-axis orientation distribution in the uppermost parts of the ice sheet. A tendency of c-axis rotation towards a broad single maximum fabric is observed in the lowest part of the studied interval. The fabric development at Dome C thus appears typical for ice-sheet summit and dome sites. The fabric development at Dome C is compared with the fabric evolution of the Dome F and GRIP ice cores. A nearest neighbor correlation analysis reveals little evidence for polygonization while microscopic observations show that subgrain boundaries are present in half of the grains in any depth. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctica |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
Abstract: A study of c-axis orientations in the upper 1500 m of the Dome C deep ice core has been carried out using an automatic ice fabric analyzer (AIFA). 29 vertical and a few horizontal thin sections from different depths in the core have been analyzed. Presentation of the fabric data and resulting parameters is in accordance with new standards developed for automatic ice fabric analyzers. The fabric diagrams display a near-random c-axis orientation distribution in the uppermost parts of the ice sheet. A tendency of c-axis rotation towards a broad single maximum fabric is observed in the lowest part of the studied interval. The fabric development at Dome C thus appears typical for ice-sheet summit and dome sites. The fabric development at Dome C is compared with the fabric evolution of the Dome F and GRIP ice cores. A nearest neighbor correlation analysis reveals little evidence for polygonization while microscopic observations show that subgrain boundaries are present in half of the grains in any depth. |
format |
Article in Journal/Newspaper |
author |
Wang, Yongbo Kipfstuhl, Sepp Azuma, N. Thorsteinsson, T. Miller, Heinrich |
spellingShingle |
Wang, Yongbo Kipfstuhl, Sepp Azuma, N. Thorsteinsson, T. Miller, Heinrich Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
author_facet |
Wang, Yongbo Kipfstuhl, Sepp Azuma, N. Thorsteinsson, T. Miller, Heinrich |
author_sort |
Wang, Yongbo |
title |
Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
title_short |
Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
title_full |
Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
title_fullStr |
Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
title_full_unstemmed |
Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core |
title_sort |
ice-fabrics study in the upper 1500 m of the dome c (east antarctica) deep ice core |
publishDate |
2003 |
url |
https://epic.awi.de/id/eprint/10255/ https://hdl.handle.net/10013/epic.20745 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Dome F East Antarctica |
geographic_facet |
Dome F East Antarctica |
genre |
Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet |
op_source |
EPIC3Annals of glaciology, 37, pp. 97-104 |
op_relation |
Wang, Y. , Kipfstuhl, S. , Azuma, N. , Thorsteinsson, T. and Miller, H. (2003) Ice-fabrics study in the upper 1500 m of the Dome C (East Antarctica) deep ice core , Annals of glaciology, 37 , pp. 97-104 . hdl:10013/epic.20745 |
_version_ |
1776198771563036672 |