Preprints
https://doi.org/10.5194/egusphere-2022-492
https://doi.org/10.5194/egusphere-2022-492
16 Jun 2022
 | 16 Jun 2022

ISMIP-HOM benchmark experiments using Underworld

Till Sachau, Haibin Yang, Justin Lang, Paul D. Bons, and Louis Moresi

Abstract. Numerical models have become an indispensable tool for understanding and predicting the flow of ice sheets and glaciers. Here we present the full-Stokes software package Underworld to the glaciological community. The code is already well established in simulating complex geodynamic systems. Advantages for glaciology are that it provides a full-Stokes solution for elasto-visco-plastic materials and includes mechanical anisotropy. Underworld uses a material point method to track the full history information of Lagrangian material points, of stratigraphic layers and of free surfaces. We show that Underworld successfully reproduces the results of other full-Stokes models for the benchmark experiments of the ISMIP-HOM project. Furthermore, we test FE meshes with different geometries and highlight the need to be able to adapt the finite-element grid to discontinuous interfaces between materials with strongly different properties, such as the ice-bedrock boundary.

Journal article(s) based on this preprint

02 Dec 2022
ISMIP-HOM benchmark experiments using Underworld
Till Sachau, Haibin Yang, Justin Lang, Paul D. Bons, and Louis Moresi
Geosci. Model Dev., 15, 8749–8764, https://doi.org/10.5194/gmd-15-8749-2022,https://doi.org/10.5194/gmd-15-8749-2022, 2022
Short summary

Till Sachau et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-492', Frank Pattyn, 12 Jul 2022
  • RC2: 'Comment on egusphere-2022-492', Anonymous Referee #2, 21 Jul 2022
  • AC1: 'Comment on egusphere-2022-492', Till Sachau, 18 Oct 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-492', Frank Pattyn, 12 Jul 2022
  • RC2: 'Comment on egusphere-2022-492', Anonymous Referee #2, 21 Jul 2022
  • AC1: 'Comment on egusphere-2022-492', Till Sachau, 18 Oct 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Till Sachau on behalf of the Authors (18 Oct 2022)  Author's response   Manuscript 
EF by Mika Burghoff (19 Oct 2022)  Supplement 
EF by Mika Burghoff (19 Oct 2022)  Author's tracked changes 
ED: Referee Nomination & Report Request started (20 Oct 2022) by Mauro Cacace
RR by Anonymous Referee #2 (02 Nov 2022)
ED: Publish subject to technical corrections (02 Nov 2022) by Mauro Cacace
AR by Till Sachau on behalf of the Authors (10 Nov 2022)  Author's response   Manuscript 

Journal article(s) based on this preprint

02 Dec 2022
ISMIP-HOM benchmark experiments using Underworld
Till Sachau, Haibin Yang, Justin Lang, Paul D. Bons, and Louis Moresi
Geosci. Model Dev., 15, 8749–8764, https://doi.org/10.5194/gmd-15-8749-2022,https://doi.org/10.5194/gmd-15-8749-2022, 2022
Short summary

Till Sachau et al.

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Knowledge of the internal structures of the major continental ice sheets is improving, thanks to new investigative techniques. These structures are an essential indication of the flow behavior and dynamics of ice transport, which in turn is important for understanding the actual impact of the vast amounts of water trapped in continental ice sheets on global sea level rise. The software studied here is specifically designed to simulate such structures and their formation history.