Results 81 to 90 of about 2,075 (207)

Core scans and lithologic analysis of Subglacial Lake Whillans sediment cores

, 2016
The hydrologic system beneath the Antarctic Ice Sheet is thought to influence both the dynamics and distribution of fast flowing ice streams, which discharge most of the ice lost by the ice sheet.
WISSARD Science Team, Powell, Ross, Tulaczyk, Slawek, Scherer, Reed P, WISSARD Science Team (6980345), Stefanie Brachfield (6980342), Brachfield, Stefanie, Hodson, Timothy O, Timothy O Hodson (6980339), Slawek Tulaczyk (8014925), Reed P Scherer (6963269), Ross Powell (6958595)   +11 more
core   +1 more source

Holocene hydrological evolution of subglacial Lake Snow Eagle, East Antarctica, implied by englacial radiostratigraphy

Journal of Glaciology
A major subglacial lake, Lake Snow Eagle (LSE), was identified in East Antarctica by airborne geophysical surveys. LSE, contained within a subglacial canyon, likely hosts a valuable sediment record of the geological and glaciological changes of interior ...
Shuai Yan, Michelle R. Koutnik, Donald D. Blankenship, Jamin S. Greenbaum, Duncan A. Young, Jason L. Roberts, Tas van Ommen, Bo Sun, Martin J. Siegert   +8 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

Alteration of Feldspar‐Rich Rocks on Ancient Mars and Its Possible Link to Ca/Fe‐Rich Carbonates

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Feldspar‐rich rocks have increasingly been discovered on the martian surface. They may have been an important part of the ancient martian crust and may be related to Ca/Fe‐rich carbonates (one of two types of carbonates on Mars and the other being Mg‐rich carbonates), but compared to mafic rocks, their interaction with water on ancient Mars is
C. Wang, T. Usui, M. Melwani Daswani
wiley   +1 more source

Models of ice melting and edifice growth during subglacial basaltic eruptions. [PDF]

, 2007
Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities.
Tuffen, Hugh
core  

Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet [PDF]

, 2011
Peer ...
Steven Palmer, Peter Nienow, Mair, Douglas, Mair, D., Wadham, J., S., Palmer, Douglas Mair, Ian Bartholomew, Sole, Andrew, Andrew Sole, Thomas Cowton, T., Cowton, Nienow, Peter, Jemma Wadham, Palmer, Steven, Wadham, JL, Cowton, Thomas, Bartholomew, Ian, Sole, A., Palmer, S., P., Nienow, Wadham, Jemma, Cowton, T., Bartholomew, I., A., Sole, Nienow, P.   +25 more
core   +1 more source

Alaska‐Yukon Glacier Depths From a Decade of Airborne Radar Sounding

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract NASA's Operation IceBridge employed airborne radar sounders in Alaska and adjacent northwestern Canada between 2012 and 2021 to measure the thickness of the region's glaciers. Here we present the first comprehensive analysis of these data, analyzing ∼31,700 linear‐km of radar profile data to provide over 5,500 linear‐km of ice thickness and ...
B. S. Tober, M. S. Christoffersen, J. W. Holt, M. Truffer, C. F. Larsen   +4 more
wiley   +1 more source

Cauldron subsidence and subglacial floods

, 2007
Ice cauldrons are depressions which form at the surface of ice sheets when an underlying subglacial lake empties, in particular when subglacial volcanic eruptions occur.
A.C. Fowler, Fowler, AC, G.W. Evatt, Evatt, GW, Evatt, G. W., Fowler, A. C.   +5 more
core   +1 more source

Modeling oscillations in connected glacial lakes

Journal of Glaciology, 2019
Mountain glaciers and ice sheets often host marginal and subglacial lakes that are hydraulically connected through subglacial drainage systems. These lakes exhibit complex dynamics that have been the subject of models for decades.
Aaron G. Stubblefield, Timothy T. Creyts, Jonathan Kingslake, Marc Spiegelman   +3 more
doaj   +1 more source

The Decline of a Caldera‐Filling Glacier at Volcán Sollipulli, Chile

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract Southern Andean glaciers have undergone fast retreat in recent decades. This results in reduced freshwater storage, contribution to sea‐level rise, and locally to the formation of glacial lakes, that may pose the risk of glacial lake outburst floods (GLOFs).
J. E. Arndt, M. Somos, S. Navas, D. Farías‐Barahona, A. Rivera, H. Xie, A. Fernández   +6 more
wiley   +1 more source