Results 91 to 100 of about 153,318 (201)

What can radar-based measures of subglacial hydrology tell us about basal shear stress? A case study at Thwaites Glacier, West Antarctica

Journal of Glaciology
Ice sheet models use observations to infer basal shear stress, but the variety of methods and datasets available has resulted in a wide range of estimates.
Rohaiz Haris, Winnie Chu, A. Robel
semanticscholar   +1 more source

Warm Surface Waters Dominate Melting of the Denman‐Shackleton Ice Shelf System

Journal of Geophysical Research: Oceans, Volume 131, Issue 7, July 2026.
Abstract The ocean dynamics controlling the melting of the Denman‐Shackleton ice shelf system are investigated using a high‐resolution regional ocean‐sea ice‐ice shelf model. Our results show that basal meltwater production exhibits strong seasonal variability, driven by the ocean heat supply toward the ice shelf system, and occurs through two distinct
Yuhang Liu, Maxim Nikurashin, Beatriz Peña‐Molino, Paul Spence, Laura Herraiz‐Borreguero   +4 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

Post‐1990s Warming of Circumpolar Deep Water Off West Antarctica and Its Drivers

Journal of Geophysical Research: Oceans, Volume 131, Issue 7, July 2026.
Abstract Ice loss off East Antarctica has been linked to the warming of Circumpolar Deep Water (CDW) associated with a poleward shift of the southern boundary of the Antarctic Circumpolar Current (ACC). In West Antarctica, where the fastest ice‐shelf melting occurs, it has been proposed that off‐shelf CDW warming could be additionally driven by ...
Brendon Y. Damini, Tiago S. Dotto, Karen J. Heywood, Alberto C. Naveira Garabato, Rob A. Hall, Mauricio M. Mata, Rodrigo Kerr   +6 more
wiley   +1 more source

Vibroseismic measurements on Thwaites Glacier, Antarctica from 2022/23

This vibroseismic survey was conducted on Thwaites Glacier in West Antarctica in 2022/23, 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

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

Emergent Dynamics From a Position‐Based Calving Function and the Limits of a Rate‐Based Calving Function

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract A wide range of functions are currently available for simulating the calving of marine‐terminating glaciers, but there is no consensus on the best approach to represent the calving process in glacier and ice‐sheet models. Current assessments of calving functions are often crudely done by fitting functions to observed changes in terminus ...
Iain Wheel, Douglas I. Benn, Anna J. Crawford   +2 more
wiley   +1 more source

Reduced West Antarctic Ice Sheet Size During Prominent Quaternary Interglacials Constrained by Iceberg‐Rafted Debris Provenance in the Amundsen Sea

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The stability of the West Antarctic Ice Sheet (WAIS) remains a major uncertainty in sea‐level projections, and geologic records provide important constraints on its past behavior. We present 40Ar/39Ar ages of biotite and hornblende grains from iceberg‐rafted debris (IRD) in two Amundsen Sea sediment cores (PC493 and PS58/254), located south ...
Patric Simões Pereira, Claus‐Dieter Hillenbrand, Sidney R. Hemming, James W. Marschalek, Rob Larter, James A. Smith, Gerhard Kuhn, Tina van de Flierdt   +7 more
wiley   +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

Controlled Explosions Pave the Way for Thwaites Glacier Research

Eos, 2020
Scientists detonate explosives in West Texas to prepare for fieldwork in West Antarctica.
openaire   +1 more source