Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4063
AuthorsTabacco, I. E.* 
Forieri, A.* 
Della Vedova, A.* 
Zirizzotti, A.* 
Bianchi, C.* 
De Michelis, P.* 
Passerini, A.* 
TitleEvidence of 14 New Subglacial Lakes in the Dome C-Vostok Area
Issue Date2003
URIhttp://hdl.handle.net/2122/4063
Keywordssubglacial lakes
RES systems
East Antarctica
Subject Classification02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction 
02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics 
02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance 
02. Cryosphere::02.02. Glaciers::02.02.10. Instruments and techniques 
AbstractIn the last few years subglacial lakes have been of great interest to the scientific community for various reasons. The lakes could be an unknown extreme habitat, which have been isolated from the terrestrial biosphere for a long time. They may have formed before the ice sheet and could perhaps reveal environmental conditions prior to its formation. Lastly, they may play a role in the current dynamics of the ice sheet. Strong radar reflections from the base of the ice sheet can generally be ascribed to either water-saturated basal sediments or subglacial lakes (Oswald & Robin, 1973). Based on radar data alone, the identification of lakes is possible if other features are present: flat and quite horizontal reflectors with nearly constant echo intensity and sharp edges similar to the margins of a catchment basin (Siegert et al., 1996; Siegert & Ridley, 1998; German & Siegert, 1999; Siegert, 2000; Tabacco et al., 2002). Subglacial lakes can be expressed in the overlying ice sheet as extremely flat surfaces with respect to the surrounding slopes (Ridley et al., 1993; Kapitsa et &l996 ; Siegert & Ridley,1998; Tabacco et al., 2002). To date, about 70 lakes have been discovered in all of Antarctica (Siegert et al.,1996); 21 of these are located in the Dome C-Vostok region.
Appears in Collections:Conference materials

Files in This Item:
File Description SizeFormat 
zirizc.pdf815.81 kBAdobe PDFView/Open
Show full item record

Page view(s)

7,483
Last Week
17
Last month
100
checked on Aug 22, 2017

Download(s)

216
checked on Aug 22, 2017

Google ScholarTM

Check