A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier

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A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier. / Todd, Joe; Christoffersen, Poul; Zwinger, Thomas; Råback, Peter; Chauché, Nolwenn; Benn, Douglas ; Luckman, Adrian J.; Ryan, Johnny ; Toberg, Nick; Slater, Donald; Hubbard, Alun.

In: Journal of Geophysical Research: Earth Surface, Vol. 123, No. 3, 01.03.2018, p. 410-432.

Research output: Contribution to journalArticle

Harvard

Todd, J, Christoffersen, P, Zwinger, T, Råback, P, Chauché, N, Benn, D, Luckman, AJ, Ryan, J, Toberg, N, Slater, D & Hubbard, A 2018, 'A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier' Journal of Geophysical Research: Earth Surface, vol. 123, no. 3, pp. 410-432. https://doi.org/10.1002/2017JF004349

APA

Todd, J., Christoffersen, P., Zwinger, T., Råback, P., Chauché, N., Benn, D., ... Hubbard, A. (2018). A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier. Journal of Geophysical Research: Earth Surface, 123(3), 410-432. https://doi.org/10.1002/2017JF004349

Vancouver

Todd J, Christoffersen P, Zwinger T, Råback P, Chauché N, Benn D et al. A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier. Journal of Geophysical Research: Earth Surface. 2018 Mar 1;123(3):410-432. https://doi.org/10.1002/2017JF004349

Author

Todd, Joe ; Christoffersen, Poul ; Zwinger, Thomas ; Råback, Peter ; Chauché, Nolwenn ; Benn, Douglas ; Luckman, Adrian J. ; Ryan, Johnny ; Toberg, Nick ; Slater, Donald ; Hubbard, Alun. / A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier. In: Journal of Geophysical Research: Earth Surface. 2018 ; Vol. 123, No. 3. pp. 410-432.

Bibtex - Download

@article{604005668e9147af9da0c5ff6679d3c8,
title = "A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier",
abstract = "Iceberg calving accounts for around half of all mass loss from both the Greenland and Antarctic ice sheets. The diverse nature of calving and its complex links to both internal dynamics and climate make it challenging to incorporate into models of glaciers and ice sheets. Here, we present results from a new open-source 3D full-Stokes calving model developed in Elmer/Ice. The calving model implements the crevasse depth criterion, which states that calving occurs when surface and basal crevasses penetrate the full thickness of the glacier. The model also implements a new 3D rediscretization approach and a time-evolution scheme which allow the calving front to evolve realistically through time. We test the model in an application to Store Glacier, one of the largest outlet glaciers in West Greenland, and find that it realistically simulates the seasonal advance and retreat when two principal environmental forcings are applied. These forcings are 1) submarine melting in distributed and concentrated forms, and 2) ice m{\'e}lange buttressing. We find that ice m{\'e}lange buttressing is primarily responsible for Store Glacier's seasonal advance and retreat. Distributed submarine melting prevents the glacier from forming a permanent floating tongue, while concentrated plume melting has a disproportionately large and potentially destabilizing effect on the calving front position. Our results also highlight the importance of basal topography, which exerts a strong control on calving, explaining why Store Glacier has remained stable during a period when neighboring glaciers have undergone prolonged interannual retreat",
keywords = "calving, Greenland, modelling",
author = "Joe Todd and Poul Christoffersen and Thomas Zwinger and Peter R{\aa}back and Nolwenn Chauch{\'e} and Douglas Benn and Luckman, {Adrian J.} and Johnny Ryan and Nick Toberg and Donald Slater and Alun Hubbard",
year = "2018",
month = "3",
day = "1",
doi = "10.1002/2017JF004349",
language = "English",
volume = "123",
pages = "410--432",
journal = "Journal of Geophysical Research: Earth Surface",
issn = "2169-9003",
publisher = "Wiley",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - A Full-Stokes 3D Calving Model applied to a large Greenlandic Glacier

AU - Todd, Joe

AU - Christoffersen, Poul

AU - Zwinger, Thomas

AU - Råback, Peter

AU - Chauché, Nolwenn

AU - Benn, Douglas

AU - Luckman, Adrian J.

AU - Ryan, Johnny

AU - Toberg, Nick

AU - Slater, Donald

AU - Hubbard, Alun

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Iceberg calving accounts for around half of all mass loss from both the Greenland and Antarctic ice sheets. The diverse nature of calving and its complex links to both internal dynamics and climate make it challenging to incorporate into models of glaciers and ice sheets. Here, we present results from a new open-source 3D full-Stokes calving model developed in Elmer/Ice. The calving model implements the crevasse depth criterion, which states that calving occurs when surface and basal crevasses penetrate the full thickness of the glacier. The model also implements a new 3D rediscretization approach and a time-evolution scheme which allow the calving front to evolve realistically through time. We test the model in an application to Store Glacier, one of the largest outlet glaciers in West Greenland, and find that it realistically simulates the seasonal advance and retreat when two principal environmental forcings are applied. These forcings are 1) submarine melting in distributed and concentrated forms, and 2) ice mélange buttressing. We find that ice mélange buttressing is primarily responsible for Store Glacier's seasonal advance and retreat. Distributed submarine melting prevents the glacier from forming a permanent floating tongue, while concentrated plume melting has a disproportionately large and potentially destabilizing effect on the calving front position. Our results also highlight the importance of basal topography, which exerts a strong control on calving, explaining why Store Glacier has remained stable during a period when neighboring glaciers have undergone prolonged interannual retreat

AB - Iceberg calving accounts for around half of all mass loss from both the Greenland and Antarctic ice sheets. The diverse nature of calving and its complex links to both internal dynamics and climate make it challenging to incorporate into models of glaciers and ice sheets. Here, we present results from a new open-source 3D full-Stokes calving model developed in Elmer/Ice. The calving model implements the crevasse depth criterion, which states that calving occurs when surface and basal crevasses penetrate the full thickness of the glacier. The model also implements a new 3D rediscretization approach and a time-evolution scheme which allow the calving front to evolve realistically through time. We test the model in an application to Store Glacier, one of the largest outlet glaciers in West Greenland, and find that it realistically simulates the seasonal advance and retreat when two principal environmental forcings are applied. These forcings are 1) submarine melting in distributed and concentrated forms, and 2) ice mélange buttressing. We find that ice mélange buttressing is primarily responsible for Store Glacier's seasonal advance and retreat. Distributed submarine melting prevents the glacier from forming a permanent floating tongue, while concentrated plume melting has a disproportionately large and potentially destabilizing effect on the calving front position. Our results also highlight the importance of basal topography, which exerts a strong control on calving, explaining why Store Glacier has remained stable during a period when neighboring glaciers have undergone prolonged interannual retreat

KW - calving

KW - Greenland

KW - modelling

U2 - 10.1002/2017JF004349

DO - 10.1002/2017JF004349

M3 - Article

VL - 123

SP - 410

EP - 432

JO - Journal of Geophysical Research: Earth Surface

JF - Journal of Geophysical Research: Earth Surface

SN - 2169-9003

IS - 3

ER -

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