Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1192
AuthorsBianchi, C.* 
Chiappini, M.* 
Tabacco, I. E.* 
Passerini, A.* 
Zirizzotti, A.* 
Zuccheretti, E.* 
TitleMorphology of bottom surfaces of glacier ice tongues in the East Antarctic region
Issue DateFeb-2001
Series/Report no.44/1
URIhttp://hdl.handle.net/2122/1192
Keywordsradio echo sounding
radio glaciology
glacier ice tongues
Subject Classification02. Cryosphere::02.02. Glaciers::02.02.03. Geomorphology 
04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods 
AbstractDuring 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. The morphology and structure of the bottom surfaces deduced from the electromagnetic interpretation of echo signal were observed. The bottom surfaces at the ice/water interface show either irregular or flat contours or both. Some ice tongues are nearly perfectly flat, others show clear signs of irregularities while three of them have good regular spaced rippled bottom surfaces. The latter structures are well-evident in the longitudinal traverse of the tongues, whereas the transversal paths do not show the same features. This particular shape of the bottom surfaces related to the ablation process and detachment mechanism could be interesting especially to determine some physical characteristics and the possible fracture points of the ice tongues.
Appears in Collections:Annals of Geophysics

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