Results 71 to 80 of about 70,309 (180)

Retreat of Thwaites Glacier, West Antarctica, over the next 100 years using various ice flow models, ice shelf melt scenarios and basal friction laws [PDF]

The Cryosphere, 2018
Thwaites Glacier (TG), West Antarctica, has experienced rapid, potentially irreversible grounding line retreat and mass loss in response to enhanced ice shelf melting.
H. Yu, E. Rignot, E. Rignot, H. Seroussi, M. Morlighem   +4 more
doaj   +1 more source

Determining the Character of Subglacial Sediments in the Ice‐Bedrock Interface Zone of Antarctica Using Horizontal‐to‐Vertical Spectral Ratios (HVSRs) of Seismic Ambient Noise

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Interactions between the Antarctic Ice Sheet and the underlying solid Earth occur within the ice‐bedrock interface zone (IBIZ), containing structures of sediments and rocks that strongly influence ice sheet dynamics. Existing insights into the Antarctic IBIZ come primarily from interpretations of airborne geophysical data and active seismic ...
I. D. Kelly, A. M. Reading, T. Stål, B. Kulessa, A. García‐Jerez, J. Piña‐Flores, E. Paolucci, A. Tanzini, R. J. Turner, J. C. Magyar, A. P. Bassom   +10 more
wiley   +1 more source

The Influence of Sea Ice and Ice Mélange on Outlet Glacier Dynamics in the Arctic and Antarctic: Recent Progress and Future Challenges

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Sea ice is situated close to the termini of many outlet glaciers in the Arctic and Antarctic and has the potential to influence their dynamics and, therefore, their contribution to sea level rise. However, the nature, prevalence, and ice‐dynamic significance of sea ice‐glacier interactions remains subject to several open questions.
Katherine A. Deakin, Chris R. Stokes, Stewart S. R. Jamieson, J. Rachel Carr   +3 more
wiley   +1 more source

Melt at grounding line controls observed and future retreat of Smith, Pope, and Kohler glaciers [PDF]

The Cryosphere, 2019
Smith, Pope, and Kohler glaciers and the corresponding Crosson and Dotson ice shelves have undergone speedup, thinning, and rapid grounding-line retreat in recent years, leaving them in a state likely conducive to future retreat.
D. A. Lilien, D. A. Lilien, I. Joughin, B. Smith, N. Gourmelen   +4 more
doaj   +1 more source

Drivers of Basal Melt Variability for Pine Island Glacier Ice Shelf: Ocean Forcing Versus Geometric Feedback

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Since the 1970s, Pine Island Glacier has exhibited thinning, acceleration, and retreat. During the last decade, the ice shelf has undergone major geometric changes, whilst the quantity and temperature of modified Circumpolar Deep Water on the Amundsen Sea continental shelf fluctuated significantly.
Katie Lowery, Paul R. Holland, Pierre Dutrieux, Anna E. Hogg, Noel Gourmelen   +4 more
wiley   +1 more source

Impacts of Glacial Isostatic Adjustment on Antarctic Subglacial Water Routing Since the Last Glacial Maximum

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 5, May 2026.
Abstract The bedrock beneath the Antarctic Ice Sheet has experienced widespread viscoelastic deformation as a response to ice‐sheet changes from the Last Glacial Maximum (LGM) to present day. The combined changes of the ice sheet and the bedrock most likely had impacted subglacial water routes.
Linda Pan, Emma J. MacKie, Jerry X. Mitrovica, Stewart S. R. Jamieson, Olga V. Sergienko, Robert P. Ackert Jr., Kaighin A. McColl   +6 more
wiley   +1 more source

Vibroseismic measurements on Thwaites Glacier, Antarctica from 2023/24

This vibroseismic survey was conducted on Thwaites Glacier in West Antarctica in 2023/24, as part of the International Thwaites Glacier Collaboration's project GHOST (Geophysical Habitat of Subglacial Thwaites).
Zeising, Ole, Anandakrishnan, Sridhar, Brisbourne, Alex, Eisen, Olaf, Hofstede, Coen Matthijs   +4 more
core   +1 more source

A fast and simplified subglacial hydrological model for the Antarctic Ice Sheet and outlet glaciers [PDF]

The Cryosphere
We present a novel and computationally efficient subglacial hydrological model that represents in a simplified way both hard- and soft-bed rheologies, as well as an automatic switch between efficient and inefficient subglacial discharge, designed for ...
E. Kazmierczak, T. Gregov, T. Gregov, V. Coulon, F. Pattyn   +4 more
doaj   +1 more source

Assimilation of Antarctic velocity observations provides evidence for uncharted pinning points [PDF]

The Cryosphere, 2015
In ice flow modelling, the use of control methods to assimilate the dynamic and geometric state of an ice body has become common practice. These methods have primarily focussed on inverting for one of the two least known properties in glaciology, namely ...
J. J. Fürst, G. Durand, F. Gillet-Chaulet, N. Merino, L. Tavard, J. Mouginot, N. Gourmelen, O. Gagliardini   +7 more
doaj   +1 more source

Rates of Sea‐Level Rise Are Highly Sensitive to Ice Viscosity Parameters in Model Benchmarks

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Glacier flow plays a major role in current and future rates of globally averaged sea‐level rise. The viscosity of glacial ice, controlling the rate of flow, decreases as stress increases and is highly sensitive to the value of the stress exponent, n $n$, in the constitutive equation for viscous flow.
D. F. Martin, S. B. Kachuck, M. Trevers, J. D. Millstein, S. L. Cornford, B. M. Minchew   +5 more
wiley   +1 more source