Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice?
Creep due to ice flow is generally thought to be the main cause for the formation of crystallographic preferred orientations (CPOs) in polycrystalline anisotropic ice. However, linking the development of CPOs to the ice flow history requires a proper understanding of the ice aggregate's microst...
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Online Access: | http://hdl.handle.net/10261/270644 https://doi.org/10.5194/tc-16-2009-2022 |
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ftcsic:oai:digital.csic.es:10261/270644 2024-02-11T10:09:08+01:00 Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? Llorens, Maria-Gema Griera, A. Bons, P. D. Weikusat, Ilka Prior, D. J. Gómez-Rivas, E. de Riese, Tamara Jimenez-Munt, Ivone García-Castellanos, Daniel Lebensohn, Ricardo A. Ministerio de Ciencia, Innovación y Universidades (España) Llorens, Maria-Gema García-Castellanos, Daniel Jimenez-Munt, Ivone 2022-05 http://hdl.handle.net/10261/270644 https://doi.org/10.5194/tc-16-2009-2022 en eng European Geosciences Union #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095154-B-I00/ES/GEODINAMICA DE LA OROGENIA ALPINA MEDITERRANEA CENTRAL: CARACTERIZACION DEL MANTO Y MOVIMIENTOS VERTICALES/ https://doi.org/10.20350/digitalCSIC/14643 The data of this publication is at this repository: https://doi.org/10.20350/digitalCSIC/14643 (Llorens et al., 2022). Publisher's version https://doi.org/10.5194/tc-16-2009-2022 Sí The Cryosphere, 16: 2009–2024 (2022) 1994-0416 http://hdl.handle.net/10261/270644 doi:10.5194/tc-16-2009-2022 1994-0424 open Crystallography POLARCSIC artículo http://purl.org/coar/resource_type/c_6501 2022 ftcsic https://doi.org/10.5194/tc-16-2009-202210.20350/digitalCSIC/14643 2024-01-16T11:24:58Z Creep due to ice flow is generally thought to be the main cause for the formation of crystallographic preferred orientations (CPOs) in polycrystalline anisotropic ice. However, linking the development of CPOs to the ice flow history requires a proper understanding of the ice aggregate's microstructural response to flow transitions. In this contribution the influence of ice deformation history on the CPO development is investigated by means of full-field numerical simulations at the microscale. We simulate the CPO evolution of polycrystalline ice under combinations of two consecutive deformation events up to high strain, using the code VPFFT (visco-plastic fast Fourier transform algorithm) within ELLE. A volume of ice is first deformed under coaxial boundary conditions, which results in a CPO. The sample is then subjected to different boundary conditions (coaxial or non-coaxial) in order to observe how the deformation regime switch impacts the CPO. The model results indicate that the second flow event tends to destroy the first, inherited fabric with a range of transitional fabrics. However, the transition is slow when crystallographic axes are critically oriented with respect to the second imposed regime. Therefore, interpretations of past deformation events from observed CPOs must be carried out with caution, particularly in areas with complex deformation histories. Maria-Gema Llorens was supported by a Juan de la Cierva-Incorporación fellowship (IJC2018-036826-I), funded by the MCIN/AEI/10.13039/501100011033. Enrique Gomez-Rivas was supported by the Ramón y Cajal fellowship (RYC2018-026335-I), funded by the MCIN/AEI/10.13039/501100011033 and the FSE. Ilka Weikusat received support from the HFG grant no. VH-NG-802. This work is part of the CSIC-PTI POLARCSIC activities, and it has been developed using the facilities of the Laboratory of Geodynamic Modelling of GEO3BCN and a computer cluster of the University of Tübingen. Funding was provided partly by GeoCAM (PGC2018-095154-B-100) of the Spanish Government. ... Article in Journal/Newspaper The Cryosphere Digital.CSIC (Spanish National Research Council) Cierva ENVELOPE(-60.873,-60.873,-64.156,-64.156) Gomez ENVELOPE(-58.795,-58.795,-62.196,-62.196) The Cryosphere 16 5 2009 2024 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Crystallography POLARCSIC |
spellingShingle |
Crystallography POLARCSIC Llorens, Maria-Gema Griera, A. Bons, P. D. Weikusat, Ilka Prior, D. J. Gómez-Rivas, E. de Riese, Tamara Jimenez-Munt, Ivone García-Castellanos, Daniel Lebensohn, Ricardo A. Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
topic_facet |
Crystallography POLARCSIC |
description |
Creep due to ice flow is generally thought to be the main cause for the formation of crystallographic preferred orientations (CPOs) in polycrystalline anisotropic ice. However, linking the development of CPOs to the ice flow history requires a proper understanding of the ice aggregate's microstructural response to flow transitions. In this contribution the influence of ice deformation history on the CPO development is investigated by means of full-field numerical simulations at the microscale. We simulate the CPO evolution of polycrystalline ice under combinations of two consecutive deformation events up to high strain, using the code VPFFT (visco-plastic fast Fourier transform algorithm) within ELLE. A volume of ice is first deformed under coaxial boundary conditions, which results in a CPO. The sample is then subjected to different boundary conditions (coaxial or non-coaxial) in order to observe how the deformation regime switch impacts the CPO. The model results indicate that the second flow event tends to destroy the first, inherited fabric with a range of transitional fabrics. However, the transition is slow when crystallographic axes are critically oriented with respect to the second imposed regime. Therefore, interpretations of past deformation events from observed CPOs must be carried out with caution, particularly in areas with complex deformation histories. Maria-Gema Llorens was supported by a Juan de la Cierva-Incorporación fellowship (IJC2018-036826-I), funded by the MCIN/AEI/10.13039/501100011033. Enrique Gomez-Rivas was supported by the Ramón y Cajal fellowship (RYC2018-026335-I), funded by the MCIN/AEI/10.13039/501100011033 and the FSE. Ilka Weikusat received support from the HFG grant no. VH-NG-802. This work is part of the CSIC-PTI POLARCSIC activities, and it has been developed using the facilities of the Laboratory of Geodynamic Modelling of GEO3BCN and a computer cluster of the University of Tübingen. Funding was provided partly by GeoCAM (PGC2018-095154-B-100) of the Spanish Government. ... |
author2 |
Ministerio de Ciencia, Innovación y Universidades (España) Llorens, Maria-Gema García-Castellanos, Daniel Jimenez-Munt, Ivone |
format |
Article in Journal/Newspaper |
author |
Llorens, Maria-Gema Griera, A. Bons, P. D. Weikusat, Ilka Prior, D. J. Gómez-Rivas, E. de Riese, Tamara Jimenez-Munt, Ivone García-Castellanos, Daniel Lebensohn, Ricardo A. |
author_facet |
Llorens, Maria-Gema Griera, A. Bons, P. D. Weikusat, Ilka Prior, D. J. Gómez-Rivas, E. de Riese, Tamara Jimenez-Munt, Ivone García-Castellanos, Daniel Lebensohn, Ricardo A. |
author_sort |
Llorens, Maria-Gema |
title |
Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
title_short |
Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
title_full |
Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
title_fullStr |
Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
title_full_unstemmed |
Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
title_sort |
can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? |
publisher |
European Geosciences Union |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/270644 https://doi.org/10.5194/tc-16-2009-2022 |
long_lat |
ENVELOPE(-60.873,-60.873,-64.156,-64.156) ENVELOPE(-58.795,-58.795,-62.196,-62.196) |
geographic |
Cierva Gomez |
geographic_facet |
Cierva Gomez |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095154-B-I00/ES/GEODINAMICA DE LA OROGENIA ALPINA MEDITERRANEA CENTRAL: CARACTERIZACION DEL MANTO Y MOVIMIENTOS VERTICALES/ https://doi.org/10.20350/digitalCSIC/14643 The data of this publication is at this repository: https://doi.org/10.20350/digitalCSIC/14643 (Llorens et al., 2022). Publisher's version https://doi.org/10.5194/tc-16-2009-2022 Sí The Cryosphere, 16: 2009–2024 (2022) 1994-0416 http://hdl.handle.net/10261/270644 doi:10.5194/tc-16-2009-2022 1994-0424 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/tc-16-2009-202210.20350/digitalCSIC/14643 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
5 |
container_start_page |
2009 |
op_container_end_page |
2024 |
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1790608871847362560 |