Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream

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Standard

Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream. / Gerber, Tamara Annina; Lilien, David A.; Rathmann, Nicholas Mossor; Franke, Steven; Young, Tun Jan; Valero-Delgado, Fernando; Ershadi, M. Reza; Drews, Reinhard; Zeising, Ole; Humbert, Angelika; Stoll, Nicolas; Weikusat, Ilka; Grinsted, Aslak; Hvidberg, Christine Schøtt; Jansen, Daniela; Miller, Heinrich; Helm, Veit; Steinhage, Daniel; O’Neill, Charles; Paden, John; Gogineni, Siva Prasad; Dahl-Jensen, Dorthe; Eisen, Olaf.

I: Nature Communications, Bind 14, Nr. 1, 2653, 08.05.2023.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Gerber, TA, Lilien, DA, Rathmann, NM, Franke, S, Young, TJ, Valero-Delgado, F, Ershadi, MR, Drews, R, Zeising, O, Humbert, A, Stoll, N, Weikusat, I, Grinsted, A, Hvidberg, CS, Jansen, D, Miller, H, Helm, V, Steinhage, D, O’Neill, C, Paden, J, Gogineni, SP, Dahl-Jensen, D & Eisen, O 2023, 'Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream', Nature Communications, bind 14, nr. 1, 2653. https://doi.org/10.1038/s41467-023-38139-8

APA

Gerber, T. A., Lilien, D. A., Rathmann, N. M., Franke, S., Young, T. J., Valero-Delgado, F., Ershadi, M. R., Drews, R., Zeising, O., Humbert, A., Stoll, N., Weikusat, I., Grinsted, A., Hvidberg, C. S., Jansen, D., Miller, H., Helm, V., Steinhage, D., O’Neill, C., ... Eisen, O. (2023). Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream. Nature Communications, 14(1), [2653]. https://doi.org/10.1038/s41467-023-38139-8

Vancouver

Gerber TA, Lilien DA, Rathmann NM, Franke S, Young TJ, Valero-Delgado F o.a. Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream. Nature Communications. 2023 maj 8;14(1). 2653. https://doi.org/10.1038/s41467-023-38139-8

Author

Gerber, Tamara Annina ; Lilien, David A. ; Rathmann, Nicholas Mossor ; Franke, Steven ; Young, Tun Jan ; Valero-Delgado, Fernando ; Ershadi, M. Reza ; Drews, Reinhard ; Zeising, Ole ; Humbert, Angelika ; Stoll, Nicolas ; Weikusat, Ilka ; Grinsted, Aslak ; Hvidberg, Christine Schøtt ; Jansen, Daniela ; Miller, Heinrich ; Helm, Veit ; Steinhage, Daniel ; O’Neill, Charles ; Paden, John ; Gogineni, Siva Prasad ; Dahl-Jensen, Dorthe ; Eisen, Olaf. / Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream. I: Nature Communications. 2023 ; Bind 14, Nr. 1.

Bibtex

@article{f7a71262590a46d292e95ea01178be03,
title = "Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream",
abstract = "The dynamic mass loss of ice sheets constitutes one of the biggest uncertainties in projections of ice-sheet evolution. One central, understudied aspect of ice flow is how the bulk orientation of the crystal orientation fabric translates to the mechanical anisotropy of ice. Here we show the spatial distribution of the depth-averaged horizontal anisotropy and corresponding directional flow-enhancement factors covering a large area of the Northeast Greenland Ice Stream onset. Our results are based on airborne and ground-based radar surveys, ice-core observations, and numerical ice-flow modelling. They show a strong spatial variability of the horizontal anisotropy and a rapid crystal reorganisation on the order of hundreds of years coinciding with the ice-stream geometry. Compared to isotropic ice, parts of the ice stream are found to be more than one order of magnitude harder for along-flow extension/compression while the shear margins are potentially softened by a factor of two for horizontal-shear deformation.",
author = "Gerber, {Tamara Annina} and Lilien, {David A.} and Rathmann, {Nicholas Mossor} and Steven Franke and Young, {Tun Jan} and Fernando Valero-Delgado and Ershadi, {M. Reza} and Reinhard Drews and Ole Zeising and Angelika Humbert and Nicolas Stoll and Ilka Weikusat and Aslak Grinsted and Hvidberg, {Christine Sch{\o}tt} and Daniela Jansen and Heinrich Miller and Veit Helm and Daniel Steinhage and Charles O{\textquoteright}Neill and John Paden and Gogineni, {Siva Prasad} and Dorthe Dahl-Jensen and Olaf Eisen",
note = "Publisher Copyright: {\textcopyright} 2023, The Author(s).",
year = "2023",
month = may,
day = "8",
doi = "10.1038/s41467-023-38139-8",
language = "English",
volume = "14",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "nature publishing group",
number = "1",

}

RIS

TY - JOUR

T1 - Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream

AU - Gerber, Tamara Annina

AU - Lilien, David A.

AU - Rathmann, Nicholas Mossor

AU - Franke, Steven

AU - Young, Tun Jan

AU - Valero-Delgado, Fernando

AU - Ershadi, M. Reza

AU - Drews, Reinhard

AU - Zeising, Ole

AU - Humbert, Angelika

AU - Stoll, Nicolas

AU - Weikusat, Ilka

AU - Grinsted, Aslak

AU - Hvidberg, Christine Schøtt

AU - Jansen, Daniela

AU - Miller, Heinrich

AU - Helm, Veit

AU - Steinhage, Daniel

AU - O’Neill, Charles

AU - Paden, John

AU - Gogineni, Siva Prasad

AU - Dahl-Jensen, Dorthe

AU - Eisen, Olaf

N1 - Publisher Copyright: © 2023, The Author(s).

PY - 2023/5/8

Y1 - 2023/5/8

N2 - The dynamic mass loss of ice sheets constitutes one of the biggest uncertainties in projections of ice-sheet evolution. One central, understudied aspect of ice flow is how the bulk orientation of the crystal orientation fabric translates to the mechanical anisotropy of ice. Here we show the spatial distribution of the depth-averaged horizontal anisotropy and corresponding directional flow-enhancement factors covering a large area of the Northeast Greenland Ice Stream onset. Our results are based on airborne and ground-based radar surveys, ice-core observations, and numerical ice-flow modelling. They show a strong spatial variability of the horizontal anisotropy and a rapid crystal reorganisation on the order of hundreds of years coinciding with the ice-stream geometry. Compared to isotropic ice, parts of the ice stream are found to be more than one order of magnitude harder for along-flow extension/compression while the shear margins are potentially softened by a factor of two for horizontal-shear deformation.

AB - The dynamic mass loss of ice sheets constitutes one of the biggest uncertainties in projections of ice-sheet evolution. One central, understudied aspect of ice flow is how the bulk orientation of the crystal orientation fabric translates to the mechanical anisotropy of ice. Here we show the spatial distribution of the depth-averaged horizontal anisotropy and corresponding directional flow-enhancement factors covering a large area of the Northeast Greenland Ice Stream onset. Our results are based on airborne and ground-based radar surveys, ice-core observations, and numerical ice-flow modelling. They show a strong spatial variability of the horizontal anisotropy and a rapid crystal reorganisation on the order of hundreds of years coinciding with the ice-stream geometry. Compared to isotropic ice, parts of the ice stream are found to be more than one order of magnitude harder for along-flow extension/compression while the shear margins are potentially softened by a factor of two for horizontal-shear deformation.

U2 - 10.1038/s41467-023-38139-8

DO - 10.1038/s41467-023-38139-8

M3 - Journal article

C2 - 37156772

AN - SCOPUS:85158119718

VL - 14

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 2653

ER -

ID: 356894416