Results 31 to 40 of about 31,376 (304)
Radio-Echo Sounding: Glaciological Interpretations and Applications [PDF]
Journal of Glaciology, 1975 AbstractAfter a brief review of factors relevant to the propagation of radio waves in ice, problems of profiling the upper and bedrock surfaces of ice sheets are considered. These include deconvolution of echo traces and accurate navigation. Results already available not only provide knowledge of sub-ice geomorphology, but also confirm our general ...
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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
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
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Past rates of accumulation in central West Antarctica [PDF]
, 2004 The spatial variation in ice accumulation is critical to the form and stability of ice sheets. In West Antarctica, knowledge of present ice accumulation rates is restricted to sparse measurements and interpolations across data free regions, while ...
Ackert +20 more
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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
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Age estimates of isochronous reflection horizons by combining ice core, survey, and synthetic radar data. [PDF]
, 2004 Ice core records and ice-penetrating radar data contain complementary information on glacial subsurface structure and composition, providing various opportunities for interpreting past and present environmental conditions.
Eisen, Olaf +3 more
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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
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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
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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
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
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