Results 31 to 40 of about 1,525 (283)

Fifty-five years of Russian radio-echo sounding investigations in Antarctica

open access: yesAnnals of Glaciology, 2020
Russian (former Soviet) systematic studies of Antarctica by radio-echo sounding (RES) and ground-penetrating radar technique (GPR) were commenced in 1964.
Sergey Popov
doaj   +1 more source

Radio Echo Sounding (RES) investigations at Talos Dome (East Antarctica): bedrock topography and ice thickness

open access: yesAnnals of Geophysics, 2003
Radio echo sounding measurements were collected during two Antarctic expeditions to determine the ice thickness and the sub-glacial morphology of Talos Dome in the region around 72°48'S; 159°06'E (about 6400 km2) on the edge of the East ...
I. E. Tabacco   +6 more
doaj   +1 more source

A revised inventory of Antarctic subglacial lakes [PDF]

open access: yes, 2005
The locations and details of 145 Antarctic subglacial lakes are presented. The inventory is based on a former catalogue of lake-type features, which has been subsequently reanalysed, and on the results from three additional datasets.
Tobacco, Ignazio   +9 more
core   +1 more source

Interpreting englacial layer deformation in the presence of complex ice flow history with synthetic radargrams

open access: yesAnnals 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

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

open access: yesAnnals 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   +5 more
doaj   +1 more source

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

open access: yesThe 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   +7 more
doaj   +1 more source

Acidity Levels in Ice Sheets from Radio Echo-Sounding [PDF]

open access: yes, 1982
It has been suggested (Hammer 1977, Gudmandsen and Overgaard 1978, Millar 1981) that layers of acidic ice, formed after large volcanic eruptions, are a cause of radio echo layering.
D. H. M. Millar
core   +3 more sources

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

open access: yesThe 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   +9 more
doaj   +1 more source

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

open access: yesЛëд 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

Polarization Changes of Radio Signals in Vertical Radio-Echo Sounding of Glaciers [PDF]

open access: yesJournal of Glaciology, 1975
An electromagnetic linearly-polarized signal transmitted through the glacier in a vertical direction, reflected from the bedrock, and received with a receiving antenna, is found to be changed into one either partially or elliptically polarized. The polarization changes are believed to be due mainly to the crystal structure of the glacier and anisotropy
V. V. Bogorodskiy   +2 more
openaire   +1 more source

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