Articles | Volume 10, issue 1
https://doi.org/10.5194/tc-10-385-2016
https://doi.org/10.5194/tc-10-385-2016
Research article
 | 
16 Feb 2016
Research article |  | 16 Feb 2016

Tremor during ice-stream stick slip

B. P. Lipovsky and E. M. Dunham

Related authors

Measurement of Ice Shelf Rift Width with ICESat-2 Laser Altimetry: Automation, Validation, and the behavior of Halloween Crack, Brunt Ice Shelf, East Antarctica
Ashley Morris, Bradley P. Lipovsky, Catherine C. Walker, and Oliver J. Marsh
The Cryosphere Discuss., https://doi.org/10.5194/tc-2023-63,https://doi.org/10.5194/tc-2023-63, 2023
Preprint under review for TC
Short summary
Ice shelf rift propagation: stability, three-dimensional effects, and the role of marginal weakening
Bradley Paul Lipovsky
The Cryosphere, 14, 1673–1683, https://doi.org/10.5194/tc-14-1673-2020,https://doi.org/10.5194/tc-14-1673-2020, 2020
Short summary
Dynamics of the Askja caldera July 2014 landslide, Iceland, from seismic signal analysis: precursor, motion and aftermath
Anne Schöpa, Wei-An Chao, Bradley P. Lipovsky, Niels Hovius, Robert S. White, Robert G. Green, and Jens M. Turowski
Earth Surf. Dynam., 6, 467–485, https://doi.org/10.5194/esurf-6-467-2018,https://doi.org/10.5194/esurf-6-467-2018, 2018
Short summary

Related subject area

Subglacial Processes
Basal conditions of Denman Glacier from glacier hydrology and ice dynamics modeling
Koi McArthur, Felicity S. McCormack, and Christine F. Dow
The Cryosphere, 17, 4705–4727, https://doi.org/10.5194/tc-17-4705-2023,https://doi.org/10.5194/tc-17-4705-2023, 2023
Short summary
Mapping age and basal conditions of ice in the Dome Fuji region, Antarctica, by combining radar internal layer stratigraphy and flow modeling
Zhuo Wang, Ailsa Chung, Daniel Steinhage, Frédéric Parrenin, Johannes Freitag, and Olaf Eisen
The Cryosphere, 17, 4297–4314, https://doi.org/10.5194/tc-17-4297-2023,https://doi.org/10.5194/tc-17-4297-2023, 2023
Short summary
Towards modelling of corrugation ridges at ice-sheet grounding lines
Kelly A. Hogan, Katarzyna L. P. Warburton, Alastair G. C. Graham, Jerome A. Neufeld, Duncan R. Hewitt, Julian A. Dowdeswell, and Robert D. Larter
The Cryosphere, 17, 2645–2664, https://doi.org/10.5194/tc-17-2645-2023,https://doi.org/10.5194/tc-17-2645-2023, 2023
Short summary
Differential impact of isolated topographic bumps on ice sheet flow and subglacial processes
Marion A. McKenzie, Lauren E. Miller, Jacob S. Slawson, Emma J. MacKie, and Shujie Wang
The Cryosphere, 17, 2477–2486, https://doi.org/10.5194/tc-17-2477-2023,https://doi.org/10.5194/tc-17-2477-2023, 2023
Short summary
Compensating errors in inversions for subglacial bed roughness: same steady state, different dynamic response
Constantijn J. Berends, Roderik S. W. van de Wal, Tim van den Akker, and William H. Lipscomb
The Cryosphere, 17, 1585–1600, https://doi.org/10.5194/tc-17-1585-2023,https://doi.org/10.5194/tc-17-1585-2023, 2023
Short summary

Cited articles

Aki, K. and Richards, P. G.: Quantitative Seismology, University Science Books, Sausalito, p. 23 and 110–111, 2002.
Alley, R. B.: In search of ice-stream sticky spots, J. Glaciol., 39, 447–454, 1993.
Alley, R. B., Anandakrishnan, S., Bentley, C. R., and Lord, N.: A water-piracy hypothesis for the stagnation of Ice Stream C, Antarctica, Annal. Glaciol., 20, 187–194, https://doi.org/10.3189/172756494794587032, 1994.
Ampuero, J.-P. and Dahlen, F.: Ambiguity of the moment tensor, Bull. Seis. Soc. Amer., 95, 390–400, https://doi.org/10.1785/0120040103, 2005.
Anandakrishnan, S. and Alley, R.: Ice Stream C, Antarctica, sticky spots detected by microearthquake monitoring, Ann. Glaciol., 20, 183–186, https://doi.org/10.3189/172756494794587276, 1994.
Download
Short summary
Small repeating earthquakes occur at the ice-bed interface of the Whillans Ice Stream, West Antarctica. The earthquakes occur as rapidly as 20 earthquakes/s. We conduct numerical simulations of these earthquakes that include elastic and frictional forces as well as seismic wave propagation. We create synthetic seismograms and compare these synthetics to observed seismograms in order to constrain subglacial parameters. We comment on decadal-scale changes in these parameters.