Results 51 to 60 of about 70,309 (180)

Connected subglacial lake drainage beneath Thwaites Glacier, West Antarctica [PDF]

The Cryosphere, 2017
We present conventional and swath altimetry data from CryoSat-2, revealing a system of subglacial lakes that drained between June 2013 and January 2014 under the central part of Thwaites Glacier, West Antarctica (TWG).
B. E. Smith, N. Gourmelen, A. Huth, I. Joughin   +3 more
doaj   +1 more source

Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint quantitative analysis of new magnetotelluric (MT) data acquired at Thwaites Glacier (TG) and WAIS Divide, alongside legacy
Siobhan F. Killingbeck, Bernd Kulessa, Rebecca Pearce, Alex Brisbourne, Louise Borthwick, Felipe Napoleoni, Sridhar Anandakrishnan, Martyn Unsworth, Atsuhiro Muto   +8 more
wiley   +1 more source

Knickpoint Morphology in Homogenous Substrates Controlled by Sediment Cover and Base‐Level Fall Rate

Earth Surface Processes and Landforms, Volume 51, Issue 8, August 2026.
Knickpoints can form spontaneously under constant forcing, without external perturbations. Flume experiments reveal three distinct morphologies, controlled by the balance between base‐level fall rate and sediment cover. A new conceptual model shows how erosion, sediment armouring and plunge pool dynamics govern knickpoint morphology, challenging ...
William J. Norriss, Edwin R. C. Baynes, John Hillier, Dimitri Lague, Philippe Steer   +4 more
wiley   +1 more source

GHOSTly flute music: drumlins, moats and the bed of Thwaites Glacier

Annals of Glaciology, 2022
Glacier-bed characteristics that are poorly known and modeled are important in projected sea-level rise from ice-sheet changes under strong warming, especially in the Thwaites Glacier drainage of West Antarctica.
Richard B. Alley, Nick Holschuh, Byron Parizek, Lucas K. Zoet, Kiya Riverman, Atsuhiro Muto, Knut Christianson, Elisabeth Clyne, Sridhar Anandakrishnan, Nathan T. Stevens   +9 more
doaj   +1 more source

Teleseismic S‐Wave Coda Autocorrelation and vp/vs ${v}_{p}/{v}_{s}$ Distribution Over the Antarctic Ice Sheet

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Accurate characterization of the compressional to shear (P‐to‐S) wave‐speed ratio (vp/vs ${v}_{p}/{v}_{s}$) within the Antarctic Ice Sheet (AIS) is crucial for understanding its internal structure, mechanical stability, and vulnerability to a changing climate.
Ammu Sanjayan, Thanh‐Son Phạm, Hrvoje Tkalčić   +2 more
wiley   +1 more source

Migration of the Shear Margins at Thwaites Glacier

, 2022
Codebase used for manuscript Migration of the Shear Margins at Thwaites Glacier: Dependence on Basal Conditions and Testability Against Field ...
Summers, Paul T, Suckale, Jenny, Elsworth, Cooper W, Dow, Christine F   +3 more
core   +1 more source

Hysteresis of idealized, instability-prone outlet glaciers in response to pinning-point buttressing variation [PDF]

The Cryosphere
Ice rises or ice rumples act as ice-shelf pinning points that can play an important role in regulating the ice discharge of marine outlet glaciers. As an example, the observed recent gradual ungrounding of the ice shelf of West Antarctica's Thwaites ...
J. Feldmann, A. Levermann, A. Levermann, A. Levermann, R. Winkelmann, R. Winkelmann   +5 more
doaj   +1 more source

The Overprint of Transient Rheology on Laterally Heterogeneous Viscosity: Influences on Sea‐Level Change Driven by Antarctic Ice Sheet Loss

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Through bedrock deformation, solid Earth dynamics (specifically, glacial isostatic adjustment or GIA) influences ice sheet mass balance, especially for marine‐based ice sheets like the West Antarctic ice sheet (WAIS). As ice sheets retreat, crustal uplift can help stabilize a marine based ice sheet by reducing the ice exposed at the grounding ...
Harriet C. P. Lau, Allie N. Coonin, Frederick D. Richards, Konstantin Latychev   +3 more
wiley   +1 more source

Characterizing the subglacial environment of lower Thwaites Glacier using radar modeling

Journal of Glaciology
Understanding the spatial heterogeneity beneath Thwaites Glacier, West Antarctica, is vital to projecting its impact on future sea levels. Radar-echo sounding (RES) is commonly used to infer subglacial conditions, but these data can be challenging to ...
Chris Pierce, Mark Skidmore, Lucas Beem, Donald D. Blankenship, Edward E. Adams, Christopher Gerekos, Won Sang Lee   +6 more
doaj   +1 more source

SWOT High‐Rate Raster Data Reveals Antarctic Ice Shelf Motion and Change in Response to Ocean and Ice Dynamics

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The NASA/CNES Surface Water and Ocean Topography (SWOT) swath‐mapping radar altimetry satellite mission, launched in December 2022, provides repeat‐track coverage to about ±78.2° latitude every 21 days, sampling many of Antarctica's most dynamic ice shelves that play key roles in constraining mass loss from the grounded ice sheet ...
S. L. Howard, Z. S. Katz, L. Padman, M. R. Siegfried, E. Abrahams, T. M. Snow   +5 more
wiley   +1 more source