Results 31 to 40 of about 31,468 (298)
Лëд и снег, 2016 Thickness of the upper cold ice layer in the ablation area of the polythermal glacier Grønfjordbreen (Spitsbergen) was estimated by means of numerical modeling.
A. V. Sosnovsky +3 more
doaj +1 more source
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core [PDF]
, 2004 International audienceWe have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B‐Vostok station ice flow line (East Antarctica). We show that new evaluations of
Arnaud +30 more
core +3 more sources
Helicopter-borne radio-echo sounding of Svartisen, Norway [PDF]
Annals of Glaciology, 1993 A helicopter-mounted low frequency ice-radar has been developed for the depth sounding of temperate glaciers. The radar consists of standard transmitter and digital receiver equipment. The long antennae are supported on a special aluminium and fibreglass construction which hangs 20 m below the helicopter. The radar has been used on Engabreen, an outlet
Michael Kennett +2 more
openaire +1 more source
Annals of Glaciology, 2020 Fast ice flow on the Antarctic continent constitutes much of the mass loss from the ice sheet. However, geophysical methods struggle to constrain ice flow history at depth, or separate the signatures of topography, ice dynamics and basal conditions on ...
Cooper W. Elsworth +2 more
doaj +1 more source
Deep multi-scale learning for automatic tracking of internal layers of ice in radar data
Journal of Glaciology, 2021 In this study, our goal is to track internal ice layers on the Snow Radar data collected by NASA Operation IceBridge. We examine the application of deep learning methods on radar data gathered from polar regions.
Maryam Rahnemoonfar +4 more
doaj +1 more source
Englacial architecture of Lambert Glacier, East Antarctica [PDF]
The Cryosphere, 2023 The analysis of englacial layers using radio-echo sounding data enables the characterisation and reconstruction of current and past ice-sheet flow. Despite the Lambert Glacier catchment being one of the largest in Antarctica, discharging ∼16 % of East ...
R. J. Sanderson +8 more
doaj +1 more source
Ice stream or not? Radio-echo sounding of Carlson Inlet, West Antarctica [PDF]
The Cryosphere, 2011 The Antarctic Ice Sheet loses mass to the surrounding ocean mainly by drainage through a network of ice streams: fast-flowing glaciers bounded on either side by ice flowing one or two orders of magnitude more slowly.
E. C. King
doaj +1 more source
Radio-echo sounding of the lambert glacier basin [PDF]
Journal of Glaciology, 1975 AbstractSeveral seasons of aerial ice-thickness soundings over the region of the Prince Charles Mountains, the Lambert Glacier system, the Amery Ice Shelf, and their drainage basin in east Antarctica have now been completed. The measurements provide detailed maps of surface topography and ice thickness over an area of about 2 X 105 km2.
V. I. Morgan, W. F. Budd
openaire +1 more source
Layer optimized SAR processing and slope estimation in radar sounder data
Journal of Glaciology, 2019 Englacial layers in Antarctica and Greenland are indicators of the dynamic, rheological and subglacial configuration of the ice sheets. Airborne radar sounder data is the primary remote sensing solution for directly observing englacial layers and ...
Davide Castelletti +3 more
doaj +1 more source
Annals of Glaciology, 2020 Radar surveys across ice sheets typically measure numerous englacial layers that can often be regarded as isochrones. Such layers are valuable for extrapolating age–depth relationships away from ice-core locations, reconstructing palaeoaccumulation ...
Richard Delf +4 more
doaj +1 more source