The elastic–viscous–plastic method revisited

Bouillon, Sylvain; Fichefet, Thierry; Legat, Vincent; Madec, Gurvan. 2013 The elastic–viscous–plastic method revisited. Ocean Modelling, 71. 2-12. 10.1016/j.ocemod.2013.05.013

Before downloading, please read NORA policies.

Preview

Text 1-s2.0-S146350031300098X-main.pdf Download (4MB) | Preview

Abstract/Summary

In this paper, we show that one of the most widely used methods to solve the non-linear viscous–plastic (VP) sea ice rheology, the elastic–viscous–plastic (EVP) method, generates artificial linear bands of high deformation that may be confounded with real linear kinematic features observed in the Arctic ice pack. These numerical artefacts are easily filtered out by using a slightly different regularization of the internal stress. In addition, the EVP method is reinterpreted as an iterative solver and a clear distinction appears between the numerical and physical parameters. Two numerical parameters determine the stability and accuracy of the method and are adjusted to avoid the noisy ice deformation fields frequently observed with the EVP method in nearly rigid ice areas. This study also confirms the unsatisfactory numerical convergence of the EVP method and investigates the effects of the numerical parameters on sea ice deformation, internal stress and velocity fields obtained with unconverged solutions.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.ocemod.2013.05.013
ISSN:	14635003
Additional Keywords:	Viscous–plastic rheology; Elastic–viscous–plastic; Sea ice; NEMO
Date made live:	22 Oct 2013 09:51 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/503596

Actions (login required)

View Item

Document Downloads

More statistics for this item...