The ISCAL method and the Grounding Line - Combining the Stokes equations with the Shallow Ice Approximation and Shelfy Stream Approximation

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.

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Abstract

The Ice Sheet Coupled Approximation Level (ISCAL) method is extended so that the
non-linear Stokes equations governing ice sheet flow are coupled with a hybrid model. The
hybrid model is a combination of the Shallow Ice Approximation (SIA) and the Shelfy
Stream Approximation (SSA). The Stokes equations are only solved where the hybrid
model is inaccurate, which is determined by an automatic error estimation. The method
is tested on short simulations of coupled ice sheet/ice shelf flow. The ISCAL method
applies the SIA in the high friction inland areas, the SSA at the margins and the shelf,
and the Stokes equation at the grounding line, and occasionally at the dome. A method
for static load balancing of the ISCAL method is proposed.

Document Type: Article
Keywords: Stokes equations, grounding line, SIA, SSA, ice shelf
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Date Deposited: 11 May 2017 06:27
Last Modified: 11 May 2017 06:27
URI: http://eprints.uni-kiel.de/id/eprint/37913

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