Articles | Volume 15, issue 2
The Cryosphere, 15, 663–676, 2021
https://doi.org/10.5194/tc-15-663-2021
The Cryosphere, 15, 663–676, 2021
https://doi.org/10.5194/tc-15-663-2021

Research article 11 Feb 2021

Research article | 11 Feb 2021

Recent acceleration of Denman Glacier (1972–2017), East Antarctica, driven by grounding line retreat and changes in ice tongue configuration

Bertie W. J. Miles et al.

Related authors

Velocity increases at Cook Glacier, East Antarctica, linked to ice shelf loss and a subglacial flood event
Bertie W. J. Miles, Chris R. Stokes, and Stewart S. R. Jamieson
The Cryosphere, 12, 3123–3136, https://doi.org/10.5194/tc-12-3123-2018,https://doi.org/10.5194/tc-12-3123-2018, 2018
Short summary
Simultaneous disintegration of outlet glaciers in Porpoise Bay (Wilkes Land), East Antarctica, driven by sea ice break-up
Bertie W. J. Miles, Chris R. Stokes, and Stewart S. R. Jamieson
The Cryosphere, 11, 427–442, https://doi.org/10.5194/tc-11-427-2017,https://doi.org/10.5194/tc-11-427-2017, 2017
Short summary

Related subject area

Discipline: Ice sheets | Subject: Antarctic
Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation
Nicolaj Hansen, Peter L. Langen, Fredrik Boberg, Rene Forsberg, Sebastian B. Simonsen, Peter Thejll, Baptiste Vandecrux, and Ruth Mottram
The Cryosphere, 15, 4315–4333, https://doi.org/10.5194/tc-15-4315-2021,https://doi.org/10.5194/tc-15-4315-2021, 2021
Short summary
Investigating the internal structure of the Antarctic ice sheet: the utility of isochrones for spatiotemporal ice-sheet model calibration
Johannes Sutter, Hubertus Fischer, and Olaf Eisen
The Cryosphere, 15, 3839–3860, https://doi.org/10.5194/tc-15-3839-2021,https://doi.org/10.5194/tc-15-3839-2021, 2021
Short summary
What is the surface mass balance of Antarctica? An intercomparison of regional climate model estimates
Ruth Mottram, Nicolaj Hansen, Christoph Kittel, J. Melchior van Wessem, Cécile Agosta, Charles Amory, Fredrik Boberg, Willem Jan van de Berg, Xavier Fettweis, Alexandra Gossart, Nicole P. M. van Lipzig, Erik van Meijgaard, Andrew Orr, Tony Phillips, Stuart Webster, Sebastian B. Simonsen, and Niels Souverijns
The Cryosphere, 15, 3751–3784, https://doi.org/10.5194/tc-15-3751-2021,https://doi.org/10.5194/tc-15-3751-2021, 2021
Short summary
Energetics of surface melt in West Antarctica
Madison L. Ghiz, Ryan C. Scott, Andrew M. Vogelmann, Jan T. M. Lenaerts, Matthew Lazzara, and Dan Lubin
The Cryosphere, 15, 3459–3494, https://doi.org/10.5194/tc-15-3459-2021,https://doi.org/10.5194/tc-15-3459-2021, 2021
Short summary
Brief communication: Thwaites Glacier cavity evolution
Suzanne L. Bevan, Adrian J. Luckman, Douglas I. Benn, Susheel Adusumilli, and Anna Crawford
The Cryosphere, 15, 3317–3328, https://doi.org/10.5194/tc-15-3317-2021,https://doi.org/10.5194/tc-15-3317-2021, 2021
Short summary

Cited articles

Aitken, A. R. A., Roberts, J. L., van Ommen, T. D., Young, D. A., Golledge, N. R., Greenbaum, J. S., Blankenship, D. D., and Siegert, M. J.: Repeated large-scale retreat and advance of Totten Glacier indicated by inland bed erosion, Nature, 533, 385–389, 2016. 
Arthur, J. F., Stokes, C. R., Jamieson, S. S. R., Carr, J. R., and Leeson, A. A.: Distribution and seasonal evolution of supraglacial lakes on Shackleton Ice Shelf, East Antarctica, The Cryosphere, 14, 4103–4120, https://doi.org/10.5194/tc-14-4103-2020, 2020. 
Brancato, V., Rignot, E., Milillo, P., Morlighem, M., Mouginot, J., An, L., Scheuchl, B., Jeong, S., Rizzoli, P., Bueso Bello, J. L., and Prats-Iraola, P.: Grounding line retreat of Denman Glacier, East Antarctica, measured with COSMO-SkyMed radar interferometry data, Geophys. Res. Lett., 47, e2019GL086291, https://doi.org/10.1029/2019GL086291, 2020. 
Burke, K. D., Williams, J. W., Chandler, M. A., Haywood, A. M., Lunt, D. J., and Otto-Bliesner, B. L.: Pliocene and Eocene provide best analogs for near-future climates, P. Natl. Acad. Sci. USA, 115, 13288–13293, 2018. 
Cassin, J. and Wilkes, C.: United States Exploring Expedition: During the Years 1838, 1839, 1840, 1841, 1842, Under the Command of Charles Wilkes, USN. Mammalogy and Ornithology, JB Lippincott & Company, Philadelphia, 1858. 
Download
Short summary
We provide a historical overview of changes in Denman Glacier's flow speed, structure and calving events since the 1960s. Based on these observations, we perform a series of numerical modelling experiments to determine the likely cause of Denman's acceleration since the 1970s. We show that grounding line retreat, ice shelf thinning and the detachment of Denman's ice tongue from a pinning point are the most likely causes of the observed acceleration.