A viscoelastic solid earth deformation model to Elmer/Ice
In a recent development funded by the University of Tasmania, Hobart, Australia, the linear Elasticity solver in Elmer has been modified to account for Maxwell type of viscoelastic materials. Furthermore, the most simplest implementation of a a viscoelastic solid earth model, neglecting sphericity and self-gravitation has been set up in its weak form. In contrary to for GIA adapted commercial codes, this means that Elmer does not need special treatment of boundaries between layers of different density, which makes the setup of a layered solid earth model much easier and - since Elmer is open source - independent from any license fees that would be imposed by commercial codes. The paper mentioned below itself does not include results from Elmer/Ice, but we would like to utilize this news-feed to point out the possibility to apply the new module, Elmer/Earth, in combination with Elmer/Ice, as the transfer of ice-loads and deformations are easily achieved by the common code-basis Elmer. Imposed by the earlier mentioned simplifications, computations should be confined to regional studies. In future we might think of including missing components to deploy this model on continental scale ice-sheets.
Zwinger, T., Nield, G. A., Ruokolainen, J., and King, M. A., 2020. A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4), Geosci. Model Dev., 14, 1155–1164, doi:10.5194/gmd-13-1155-2020