Results 61 to 70 of about 564 (170)
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.Abstract The West Antarctic Ice Sheet (WAIS) contains an ice volumetric equivalent of 5.3 m of global mean sea‐level rise. Understanding the climate mechanisms that influence WAIS surface mass balance (SMB) can help reduce uncertainties in sea‐level rise projections. Previous work has focused on trends related to temperature and the roles of well‐known
Ella K. Hunter +5 more
wiley +1 more source
Air reverse circulation at the hole bottom in ice-core drilling
Journal of Glaciology, 2019 Ice-core drilling to depths of 200–300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability.
ZHENGYI HU +7 more
doaj +1 more source
Seasonal Ice Dynamics Control the Timing of Crevasse Drainage at a Fast‐Flowing Outlet Glacier
AGU Advances, Volume 7, Issue 3, June 2026.Abstract Crevasse field drainage transfers at least half of the seasonal runoff from the surface to the bed of the Greenland Ice Sheet, but the patterns of drainage are complex and spatio‐temporally heterogenous. To better understand controls on crevasse drainage processes, we use an automated deep learning method to map the seasonal filling and ...
T. R. Chudley +7 more
wiley +1 more source
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 +10 more
wiley +1 more source
Formation and development of supraglacial lakes in the percolation zone of the Greenland ice sheet
Journal of Glaciology, 2017 We examine repeat surface altimetry and radio echo observations of two supraglacial lakes in the percolation zone of the Greenland ice sheet to investigate the changes in firn conditions leading to lake formation and implications for meltwater storage ...
CHRISTINE CHEN +2 more
doaj +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 +4 more
wiley +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 10, 28 May 2026.Abstract The Southern Annular Mode (SAM) represents the dominant pattern of climate variability in the extratropical Southern Hemisphere. However, its signature in coastal East Antarctic ice core records is unclear. A daily synoptic typing data set for the southern Indian Ocean constructed using self‐organizing maps on 500 hPa daily geopotential height
Danielle Udy +15 more
wiley +1 more source
Interannual Variations of Precipitation Events at Dome Fuji Station, Antarctica
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 10, 28 May 2026.Abstract Precipitation is key to the water budget of inland Antarctica, with extreme precipitation events strongly influencing snowfall and surface climatology. To investigate the contribution and trends of such events at Dome Fuji station (DF) in inland Antarctica, this study analyzed precipitation variability using the ERA5 product validated against ...
Kyohei Yamada +3 more
wiley +1 more source
Diffusion of stable isotopes in polar firn and ice: the isotope effect in firn diffusion
, 2000 Ice core records are often affected by post-depositional processes that need to be better understood to prevent wrong interpretation of the data. Records of stable isotopes are affected by diffusion both in the firn and in the deeper ice. We present a quantitative theory for diffusion in firn that applies the measured tortuosity factors for O₂ and CO₂ ...
Johnsen, Sigfús J. +4 more
openaire +2 more sources
Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.Abstract Subglacial processes are key to glacier dynamics but remain poorly constrained due to limited in situ observations. We use continuous seismic and Global Navigation Satellite System (GNSS) measurements to investigate summer basal conditions at Sermeq Kujalleq in Kangia (SKK; Jakobshavn Isbræ), Kalaallit Nunaat (Greenland).
Janneke van Ginkel +6 more
wiley +1 more source