Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy
The impurity content in meteoric ice from polar regions is relatively low compared to other natural materials. However, it controls a variety of physical properties of ice - from dielectric response to its mechanical behaviour. Links between impurity concentration, changes in ice micro-structure and...
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ftawi:oai:epic.awi.de:46796 2023-05-15T13:45:21+02:00 Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy Eichler, Jan Kleitz, Ina Bayer, Maddalena Jansen, Daniela Kipfstuhl, Sepp Shigeyama, Wataru Weikusat, Christian Wilhelms, Frank Weikusat, Ilka 2018-01 application/pdf https://epic.awi.de/id/eprint/46796/ https://epic.awi.de/id/eprint/46796/1/PCI_Poster_Impurities_cmyk.pdf https://hdl.handle.net/10013/epic.fd0ca8d6-00f8-433b-bf9d-4a5ea0af734b https://hdl.handle.net/ unknown https://epic.awi.de/id/eprint/46796/1/PCI_Poster_Impurities_cmyk.pdf https://hdl.handle.net/ Eichler, J. , Kleitz, I. , Bayer, M. orcid:0000-0002-7158-5478 , Jansen, D. orcid:0000-0002-4412-5820 , Kipfstuhl, S. , Shigeyama, W. , Weikusat, C. , Wilhelms, F. orcid:0000-0001-7688-3135 and Weikusat, I. orcid:0000-0002-3023-6036 (2018) Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy , 14th International Conference on the Physics and Chemistry of Ice (PCI-2018 in Zürich), Zürich, 7 January 2018 - 12 January 2018 . hdl:10013/epic.fd0ca8d6-00f8-433b-bf9d-4a5ea0af734b EPIC314th International Conference on the Physics and Chemistry of Ice (PCI-2018 in Zürich), Zürich, 2018-01-07-2018-01-12 Conference notRev 2018 ftawi 2021-12-24T15:43:44Z The impurity content in meteoric ice from polar regions is relatively low compared to other natural materials. However, it controls a variety of physical properties of ice - from dielectric response to its mechanical behaviour. Links between impurity concentration, changes in ice micro-structure and deformation rate have been reported on several scales. In order to approach the responsible mechanisms, a better understanding is needed regarding the in-situ form, location, and distribution of the different species within the polycrystal. We used an optical microscope to generate high-resolution 2D-maps of micro-inclusions in deep ice from the EDML ice core (Antarctica). Superposition of the grain boundary network and micro-inclusion distributions shows no significant correlations between grain boundaries and micro-inclusions. Implications for the relevance of Zener pinning during grain boundary migration and redistribution of impurities by grain boundary drag are discussed. Raman spectra of micro-inclusions in selected regions were obtained using a confocal cryo-Raman system. Comparison with ion chromatography shows that most of the available ions in ice precipitate in form of micro-inclusions. However, indications were found that some of the residual components could coexist in form of solid solution. Conference Object Antarc* Antarctica ice core Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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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 |
The impurity content in meteoric ice from polar regions is relatively low compared to other natural materials. However, it controls a variety of physical properties of ice - from dielectric response to its mechanical behaviour. Links between impurity concentration, changes in ice micro-structure and deformation rate have been reported on several scales. In order to approach the responsible mechanisms, a better understanding is needed regarding the in-situ form, location, and distribution of the different species within the polycrystal. We used an optical microscope to generate high-resolution 2D-maps of micro-inclusions in deep ice from the EDML ice core (Antarctica). Superposition of the grain boundary network and micro-inclusion distributions shows no significant correlations between grain boundaries and micro-inclusions. Implications for the relevance of Zener pinning during grain boundary migration and redistribution of impurities by grain boundary drag are discussed. Raman spectra of micro-inclusions in selected regions were obtained using a confocal cryo-Raman system. Comparison with ion chromatography shows that most of the available ions in ice precipitate in form of micro-inclusions. However, indications were found that some of the residual components could coexist in form of solid solution. |
format |
Conference Object |
author |
Eichler, Jan Kleitz, Ina Bayer, Maddalena Jansen, Daniela Kipfstuhl, Sepp Shigeyama, Wataru Weikusat, Christian Wilhelms, Frank Weikusat, Ilka |
spellingShingle |
Eichler, Jan Kleitz, Ina Bayer, Maddalena Jansen, Daniela Kipfstuhl, Sepp Shigeyama, Wataru Weikusat, Christian Wilhelms, Frank Weikusat, Ilka Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
author_facet |
Eichler, Jan Kleitz, Ina Bayer, Maddalena Jansen, Daniela Kipfstuhl, Sepp Shigeyama, Wataru Weikusat, Christian Wilhelms, Frank Weikusat, Ilka |
author_sort |
Eichler, Jan |
title |
Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
title_short |
Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
title_full |
Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
title_fullStr |
Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
title_full_unstemmed |
Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy |
title_sort |
location and composition of micro-inclusions in deep ice from the edml ice core (antarctica) using optical microscope and cryo-raman spectroscopy |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/46796/ https://epic.awi.de/id/eprint/46796/1/PCI_Poster_Impurities_cmyk.pdf https://hdl.handle.net/10013/epic.fd0ca8d6-00f8-433b-bf9d-4a5ea0af734b https://hdl.handle.net/ |
genre |
Antarc* Antarctica ice core |
genre_facet |
Antarc* Antarctica ice core |
op_source |
EPIC314th International Conference on the Physics and Chemistry of Ice (PCI-2018 in Zürich), Zürich, 2018-01-07-2018-01-12 |
op_relation |
https://epic.awi.de/id/eprint/46796/1/PCI_Poster_Impurities_cmyk.pdf https://hdl.handle.net/ Eichler, J. , Kleitz, I. , Bayer, M. orcid:0000-0002-7158-5478 , Jansen, D. orcid:0000-0002-4412-5820 , Kipfstuhl, S. , Shigeyama, W. , Weikusat, C. , Wilhelms, F. orcid:0000-0001-7688-3135 and Weikusat, I. orcid:0000-0002-3023-6036 (2018) Location and composition of micro-inclusions in deep ice from the EDML ice core (Antarctica) using optical microscope and cryo-Raman spectroscopy , 14th International Conference on the Physics and Chemistry of Ice (PCI-2018 in Zürich), Zürich, 7 January 2018 - 12 January 2018 . hdl:10013/epic.fd0ca8d6-00f8-433b-bf9d-4a5ea0af734b |
_version_ |
1766221169191550976 |