Items where Author is "Ahlkrona, Josefin"

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Items where Author is "Ahlkrona, Josefin"

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Number of items: 10.

2019

Ahlkrona, J. and Braack, M. (2019) Equal-Order Stabilized Finite Element Approximation of the p-Stokes Equations on Anisotropic Cartesian Meshes. Computational Methods in Applied Mathematics . DOI 10.1515/cmam-2018-0260.

2018

Helanow, C. and Ahlkrona, J. (2018) Stabilized equal low-order finite elements in ice sheet modeling – accuracy and robustness.

Computational Geosciences, 22 . DOI 10.1007/s10596-017-9713-5.

2017

Ahlkrona, J. and Shcherbakov, V. (2017) A meshfree approach to non-Newtonian free surface ice flow: Application to the Haut Glacier d'Arolla. Journal of Computational Physics, 330 . pp. 633-649. DOI 10.1016/j.jcp.2016.10.045.

2016

Ahlkrona, J. (2016) The ISCAL method and the Grounding Line - Combining the Stokes equations with the Shallow Ice Approximation and Shelfy Stream Approximation. Technical Report 2016-006 . pp. 1-13.

Ahlkrona, J. (2016) Computational Ice Sheet Dynamics - Error control and efficiency. (PhD/ Doctoral thesis), Uppsala University, Uppsala, Sweden, 46 pp.

Ahlkrona, J., Lötstedt, P., Kirchner, N. and Zwinger, T. (2016) Dynamically coupling the non-linear Stokes equations with the shallow ice approximation in glaciology: Description and first applications of the ISCAL method. Journal of Computational Physics, 308 . pp. 1-19. DOI 10.1016/j.jcp.2015.12.025.

Kirchner, N., Ahlkrona, J., Gowan, E. J., Lötstedt, P., Lea, J. M., Noormets, R., von Sydow, L., Dowdeswell, J. A. and Benham, T. (2016) Shallow ice approximation, second order shallow ice approximation, and full Stokes models: A discussion of their roles in palaeo-ice sheet modelling and development. Quaternary Science Reviews, 147 . pp. 136-147. DOI 10.1016/j.quascirev.2016.01.032.

2013

Ahlkrona, J., Kirchner, N. and Lotstedt, P. (2013) A numerical study of scaling relations for non-newtonian thin-film flows with applications in ice sheet modelling. The Quarterly Journal of Mechanics and Applied Mathematics, 66 (4). pp. 417-435. DOI 10.1093/qjmam/hbt009.

Ahlkrona, J., Kirchner, N. and Lötstedt, P. (2013) Accuracy of the zeroth- and second-order shallow-ice approximation – numerical and theoretical results. Geoscientific Model Development, 6 (6). pp. 2135-2152. DOI 10.5194/gmd-6-2135-2013.

2011

Ahlkrona, J. (2011) Implementing Higher Order Dynamics into the Ice Sheet Model SICOPOLIS. (Master thesis), Uppsala University, Uppsala, Sweden, 49 pp.

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