Results 31 to 40 of about 538 (258)

Radio echo sounding data analysis of the Shackleton Ice Shelf

Annals of Geophysics, 2010
In this study, our initial results are presented for the interpretation of the radio echo sounding data collected over the Shackleton Ice Shelf and adjacent ice sheet (East Antarctica) during the 2003/2004 Australian-Italian expedition.
James A. Baskaradas, Carla Bottari, Ignazio Ezio Tabacco, Achille Zirizzotti, Lili Cafarella, Stefano Urbini, Neal Young   +6 more
doaj   +1 more source

AN AUTOMATIC EXTRACTION METHOD FOR ANTARCTIC SUBGLACIAL LAKE BASED ON RADIO ECHO SOUNDING DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Detection of subglacial lakes and interpretation their hydrological connectivity is of great importance to understanding the mass balance of Antarctic ice sheet.
D. Wang, D. Wang, T. Feng, T. Feng, T. Hao, T. Hao, R. Li, R. Li   +7 more
doaj   +1 more source

Morphology of bottom surfaces of glacier ice tongues in the East Antarctic region

Annals of Geophysics, 2001
During three Antarctic summer campaigns (1995/97/99) Radio Echo Sounding (RES) system data from some glacier ice tongues in the East Antarctic regions between Victoria Land and George V Land were collected.
E. Zuccheretti, A. Zirizzotti, A. Passerini, I. E. Tabacco, M. Chiappini, C. Bianchi   +5 more
doaj   +1 more source

Anisotropic scattering in radio-echo sounding: insights from northeast Greenland [PDF]

The Cryosphere
Anisotropic scattering and birefringence-induced power extinction are two distinct mechanisms affecting the azimuthal power response in radio-echo sounding (RES) of ice sheets.
T. A. Gerber, T. A. Gerber, D. A. Lilien, D. A. Lilien, N. F. Nymand, D. Steinhage, O. Eisen, O. Eisen, D. Dahl-Jensen, D. Dahl-Jensen   +9 more
doaj   +1 more source

Accidents and opportunities: a history of the radio echo-sounding of Antarctica, 1958–79 [PDF]

The British Journal for the History of Science, 2008
AbstractThis paper explores the history of radio echo-sounding (RES), a technique of glaciological surveying that from the late 1960s has been used to examine Antarctica's sub-glacial morphology. Although the origins of RES can be traced back to two accidental findings, its development relied upon the establishment of new geopolitical conditions, which
Siegert, Martin, Turchetti, S., Dean, K., Naylor, S.   +3 more
openaire   +3 more sources

Hydrothermal structure of a polythermal glacier in Spitsbergen by measurements and numerical modeling

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, Yu. Ya. Macheret, A. F. Glazovsky, I. I. Lavrentiev   +3 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, Masoud Yari, John Paden, Lora Koenig, Oluwanisola Ibikunle   +4 more
doaj   +1 more source

Radio-Echo Sounding: Glaciological Interpretations and Applications [PDF]

Journal of Glaciology, 1975
Abstract After 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.
openaire   +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

A comparison of automated approaches to extracting englacial-layer geometry from radar data across ice sheets

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, Dustin M. Schroeder, Andrew Curtis, Antonios Giannopoulos, Robert G. Bingham   +4 more
doaj   +1 more source