Articles | Volume 15, issue 6
https://doi.org/10.5194/tc-15-2647-2021
https://doi.org/10.5194/tc-15-2647-2021
Research article
 | 
14 Jun 2021
Research article |  | 14 Jun 2021

Mechanics and dynamics of pinning points on the Shirase Coast, West Antarctica

Holly Still and Christina Hulbe

Related authors

Ultrasonic and seismic constraints on crystallographic preferred orientations of the Priestley Glacier shear margin, Antarctica
Franz Lutz, David J. Prior, Holly Still, M. Hamish Bowman, Bia Boucinhas, Lisa Craw, Sheng Fan, Daeyeong Kim, Robert Mulvaney, Rilee E. Thomas, and Christina L. Hulbe
The Cryosphere, 16, 3313–3329, https://doi.org/10.5194/tc-16-3313-2022,https://doi.org/10.5194/tc-16-3313-2022, 2022
Short summary

Related subject area

Discipline: Ice sheets | Subject: Ice Shelf
An analysis of the interaction between surface and basal crevasses in ice shelves
Maryam Zarrinderakht, Christian Schoof, and Anthony Peirce
The Cryosphere, 18, 3841–3856, https://doi.org/10.5194/tc-18-3841-2024,https://doi.org/10.5194/tc-18-3841-2024, 2024
Short summary
The importance of cloud properties when assessing surface melting in an offline-coupled firn model over Ross Ice shelf, West Antarctica
Nicolaj Hansen, Andrew Orr, Xun Zou, Fredrik Boberg, Thomas J. Bracegirdle, Ella Gilbert, Peter L. Langen, Matthew A. Lazzara, Ruth Mottram, Tony Phillips, Ruth Price, Sebastian B. Simonsen, and Stuart Webster
The Cryosphere, 18, 2897–2916, https://doi.org/10.5194/tc-18-2897-2024,https://doi.org/10.5194/tc-18-2897-2024, 2024
Short summary
Coupled ice–ocean interactions during future retreat of West Antarctic ice streams in the Amundsen Sea sector
David T. Bett, Alexander T. Bradley, C. Rosie Williams, Paul R. Holland, Robert J. Arthern, and Daniel N. Goldberg
The Cryosphere, 18, 2653–2675, https://doi.org/10.5194/tc-18-2653-2024,https://doi.org/10.5194/tc-18-2653-2024, 2024
Short summary
Responses of the Pine Island and Thwaites glaciers to melt and sliding parameterizations
Ian Joughin, Daniel Shapero, and Pierre Dutrieux
The Cryosphere, 18, 2583–2601, https://doi.org/10.5194/tc-18-2583-2024,https://doi.org/10.5194/tc-18-2583-2024, 2024
Short summary
Extreme melting at Greenland's largest floating ice tongue
Ole Zeising, Niklas Neckel, Nils Dörr, Veit Helm, Daniel Steinhage, Ralph Timmermann, and Angelika Humbert
The Cryosphere, 18, 1333–1357, https://doi.org/10.5194/tc-18-1333-2024,https://doi.org/10.5194/tc-18-1333-2024, 2024
Short summary

Cited articles

Alley, R. B.: In search of ice-stream sticky spots, J. Glaciol., 39, 447–454, https://doi.org/10.3189/S0022143000016336, 1993. a
Anandakrishnan, S. and Alley, R. B.: Ice Stream C, Antarctica, sticky spots detected by microearthquake monitoring, Ann. Glaciol., 20, 183–186, https://doi.org/10.3189/1994AoG20-1-183-186, 1994. a
Arndt, J. E., Larter, R. D., Friedl, P., Gohl, K., Höppner, K., and the Science Team of Expedition PS104: Bathymetric controls on calving processes at Pine Island Glacier, The Cryosphere, 12, 2039–2050, https://doi.org/10.5194/tc-12-2039-2018, 2018. a
Bassis, J. N. and Ma, Y.: Evolution of basal crevasses links ice shelf stability to ocean forcing, Earth Planet. Sc. Lett., 409, 203–211, https://doi.org/10.1016/j.epsl.2014.11.003, 2015. a
Beckmann, A. and Goosse, H.: A parameterization of ice shelf–ocean interaction for climate models, Ocean Model., 5, 157–170, https://doi.org/10.1016/S1463-5003(02)00019-7, 2003. a
Download
Short summary
Pinning points, locations where floating ice shelves run aground, modify ice flow and thickness. We use a model to quantify the Ross Ice Shelf and tributary ice stream response to a group of pinning points. Ice stream sensitivity to pinning points is conditioned by basal drag, and thus basal properties, upstream of the grounding line. Without the pinning points, a redistribution of resistive stresses supports faster flow and increased mass flux but with a negligible change in total ice volume.