Results 91 to 100 of about 5,522 (216)

Drainage and refill of an Antarctic Peninsula subglacial lake reveals an active subglacial hydrological network

, 2022
Abstract. The role of subglacial hydrological networks and subglacial lakes in modulating ice dynamics under the East and West Antarctic Ice Sheets is now relatively well understood. In contrast, little is known about subglacial water bodies under the Antarctic Peninsula Ice Sheet and how these are influencing glacier behaviour.
Dominic A. Hodgson, Tom A. Jordan, Teal R. Riley, Peter T. Fretwell   +3 more
openaire   +1 more source

Eurasian ice-sheet dynamics and sensitivity to subglacial hydrology [PDF]

Journal of Glaciology, 2017
ABSTRACTIce-stream dynamics are strongly controlled by processes taking place at the ice/bed interface where subglacial water both lubricates the base and saturates any existing, underlying sediment. Large parts of the former Eurasian ice sheet were underlain by thick sequences of soft, marine sediments and many areas are imprinted with ...
EYTHOR GUDLAUGSSON, ANGELIKA HUMBERT, KARIN ANDREASSEN, CAROLINE C. CLASON, THOMAS KLEINER, SEBASTIAN BEYER   +5 more
openaire   +4 more sources

Seasonal Ice Cover Could Allow Liquid Lakes to Persist in a Cold Mars Paleoclimate

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract Geomorphic and stratigraphic studies of Mars prove that extensive liquid water flowed and pooled on the surface early in Mars' history. Martian paleoclimate models, however, have difficulty simulating climate conditions warm enough to maintain liquid water on early Mars.
Eleanor L. Moreland, Sylvia G. Dee, Yueyang Jiang, Grace Bischof, Michael A. Mischna, Nyla Hartigan, James M. Russell, John E. Moores, Kirsten L. Siebach   +8 more
wiley   +1 more source

Characterizing sub-glacial hydrology using radar simulations [PDF]

The Cryosphere
The structure and distribution of sub-glacial water directly influences Antarctic ice mass loss by reducing or enhancing basal shear stress and accelerating grounding line retreat. A common technique for detecting sub-glacial water involves analyzing the
C. Pierce, C. Gerekos, M. Skidmore, L. Beem, D. Blankenship, W. S. Lee, E. Adams, C.-K. Lee, J. Stutz   +8 more
doaj   +1 more source

Insights Into the Influence of the Greenland Ice Sheet on Oceanic Macronutrient Dynamics From Decades of Historical Data

Global Biogeochemical Cycles, Volume 40, Issue 2, February 2026.
Abstract Increasing freshwater discharge from the cryosphere has the potential to affect mechanisms that regulate the supply of macronutrients to primary producers in the ocean. Although numerous studies have characterized the biogeochemical effects of freshwater discharge from the Greenland Ice Sheet within fjords, it is unclear to what extent these ...
Xin Huang, Yuanyuan Gu, Hilde Oliver, Dustin Carroll, Thomas Juul‐Pedersen, Lorenz Meire, Mark J. Hopwood   +6 more
wiley   +1 more source

Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation

, 2019
The ANITA balloon experiment was designed to detect radio signals initiated by neutrinos and cosmic ray air showers. These signals are typically discriminated by the polarization and phase inversions of the radio signal.
Kusenko, Alexander, Munneke, Peter Kuipers, Romero-Wolf, Andrew, Schroeder, Dustin M., Shoemaker, Ian M., Siegert, Martin J.   +5 more
core   +1 more source

Demonstration of a multi-technique approach to assess glacial microbial populations in the field [PDF]

, 2016
The ability to perform microbial detection and characterization in-field at extreme environments, rather than on returned samples, has the potential to improve the efficiency, relevance and quantity of data from field campaigns.
Barnett, Megan J., Cullen, David C., Jackson, Miriam, Pawlett, Mark, Wadham, Jemma   +4 more
core   +5 more sources

Subglacial Topography of Coats Land Records Post‐Gondwanan Landscape Evolution and Early Ice‐Sheet Behavior in East Antarctica

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The East Antarctic Ice Sheet (EAIS) formed circa 34 million years ago and now contains an ice volume equivalent to ∼52 m of global sea‐level rise. Although the EAIS is approximately in balance today, there is substantial uncertainty regarding the sensitivity of sectors underlain by low‐lying bed topography to future climate and ocean warming ...
Guy J. G. Paxman, Tom A. Jordan, Michael J. Bentley, David Small, Stewart S. R. Jamieson, Daniel Steinhage   +5 more
wiley   +1 more source

Radio-echo soundings on Icelandic temperate glaciers: history of techniques and findings

Annals of Glaciology, 2020
Since the mid-1970s radio-echo soundings have been conducted on Iceland's temperate glaciers. Since then, low-frequency radar technology has furthered the study of most of the island's ice caps.
Helgi Björnsson, Finnur Pálsson
doaj   +1 more source

Plastic bed beneath Hofsjökull Ice Cap, central Iceland, and the sensitivity of ice flow to surface meltwater flux [PDF]

, 2016
The mechanical properties of glacier beds play a fundamental role in regulating the sensitivity of glaciers to environmental forcing across a wide range of timescales.
Björnsson, Björnsson, BRENT MINCHEW, Cuffey, ERIC LAROUR, FINNUR PÁLSSON, HELENE SEROUSSI, HELGI BJÖRNSSON, Malvern, MARK SIMONS, MATHIEU MORLIGHEM, SCOTT HENSLEY, Werder   +12 more
core   +1 more source