Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica
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:10256 2023-09-05T13:12:26+02:00 Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica Wang, Yongbo Kipfstuhl, Sepp Azuma, N. Thorsteinsson, T. Miller, Heinrich 2002 https://epic.awi.de/id/eprint/10256/ https://hdl.handle.net/10013/epic.20746 unknown Wang, Y. , Kipfstuhl, S. , Azuma, N. , Thorsteinsson, T. and Miller, H. (2002) Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica , International Symposium on Physical and Mechanical Processes in Ice in Relation to Glacier and Ice-Sheet Modelling. . hdl:10013/epic.20746 EPIC3International Symposium on Physical and Mechanical Processes in Ice in Relation to Glacier and Ice-Sheet Modelling. Conference notRev 2002 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. Conference Object 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 |
unknown |
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 |
Conference Object |
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 deep ice core, East Antarctica |
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 deep ice core, East Antarctica |
title_short |
Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica |
title_full |
Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica |
title_fullStr |
Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica |
title_full_unstemmed |
Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica |
title_sort |
ice fabrics study in the upper 1500 m of the dome c deep ice core, east antarctica |
publishDate |
2002 |
url |
https://epic.awi.de/id/eprint/10256/ https://hdl.handle.net/10013/epic.20746 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Dome F East Antarctica |
geographic_facet |
Dome F East Antarctica |
genre |
Antarc* Antarctica East Antarctica ice core Ice Sheet |
genre_facet |
Antarc* Antarctica East Antarctica ice core Ice Sheet |
op_source |
EPIC3International Symposium on Physical and Mechanical Processes in Ice in Relation to Glacier and Ice-Sheet Modelling. |
op_relation |
Wang, Y. , Kipfstuhl, S. , Azuma, N. , Thorsteinsson, T. and Miller, H. (2002) Ice fabrics study in the upper 1500 m of the Dome C deep ice core, East Antarctica , International Symposium on Physical and Mechanical Processes in Ice in Relation to Glacier and Ice-Sheet Modelling. . hdl:10013/epic.20746 |
_version_ |
1776200299779719168 |