C-axis fabric analysis of ice samples collected from the NEEM ice core
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| Autori principali: | , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2013
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| _version_ | 1867169511768064000 |
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| author | Eichler, Jan Weikusat, Ilka Kipfstuhl, Sepp |
| author_facet | Eichler, Jan Weikusat, Ilka Kipfstuhl, Sepp |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The focus of this Diploma thesis is the development of a new approach for the analysis of crystal orientations in polar ice, based on digital image processing. The c-axes orientations are measured on thin ice sections using automated polarized light microscopy. The measured data are stored in form of high-resolution digital images which have been evaluated only manually so far. The automatic detection of grains and grain boundaries and the extraction of their orientation and shape parameters enable a statistical acquisition of the ice microstructure. The analysis of c-axes distributions, grain sizes, misorientations between adjacent grains, grain boundary orientations etc. allows for conclusions about the active recrystallization mechanisms. This is of high importance for an improved understanding of ice de- formation and ice flow. The developed program is applied to analyze the microstructure in the NEEM ice core (Greenland). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_838063 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | C-axis fabric analysis of ice samples collected from the NEEM ice core Eichler, Jan Weikusat, Ilka Kipfstuhl, Sepp AWI_Glac; Glaciology @ AWI; NEEM; North Greenland Eemian Ice Drilling The focus of this Diploma thesis is the development of a new approach for the analysis of crystal orientations in polar ice, based on digital image processing. The c-axes orientations are measured on thin ice sections using automated polarized light microscopy. The measured data are stored in form of high-resolution digital images which have been evaluated only manually so far. The automatic detection of grains and grain boundaries and the extraction of their orientation and shape parameters enable a statistical acquisition of the ice microstructure. The analysis of c-axes distributions, grain sizes, misorientations between adjacent grains, grain boundary orientations etc. allows for conclusions about the active recrystallization mechanisms. This is of high importance for an improved understanding of ice de- formation and ice flow. The developed program is applied to analyze the microstructure in the NEEM ice core (Greenland). |
| title | C-axis fabric analysis of ice samples collected from the NEEM ice core |
| topic | AWI_Glac; Glaciology @ AWI; NEEM; North Greenland Eemian Ice Drilling |
| url | https://doi.org/10.1594/PANGAEA.838063 |