Historical behaviour of Dome C and Talos Dome (East Antarctica) as investigated by snow accumulation and ice velocity measurements

Spatial and temporal variability of snow chemical composition and accumulation rate at Talos Dome site (East Antarctica)

“…year − 1 . The calculated values of accumulation rate are in excellent agreement with the annual accumulation pattern measured during the 1996-1998 time period from stake measurements (Urbini et al, 2008). They show a large variability, from 50 to 112 mm w.e.…”

“…The lower accumulation in the downwind sector can be ascribable to an increase in wind-driven redistribution processes, which is determined by the increase in the surface slope towards the Southern Ocean (Urbini et al, 2008). Such redistribution processes seem to affect also the distribution of concentration values of most of markers.…”

“…is an about 900 km 2 elliptical ice dome, elongated in a NW-SE direction (perpendicular to the prevalent wind direction - Urbini et al, 2008), in Northern Victoria Land, at the edge of the East Antarctic plateau. It is located at about 290 km from the Southern Ocean (Oates Land-George V Land), 250 km from the Ross Sea, and 275 km from the Italian Mario Zucchelli Station (Terra Nova Bay) (Fig.…”

Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau

“…SMB measurements have been carried out regularly in the coastal area since 2004 Agosta et al, 2011;. Other studies focused on the DC sector (Petit et al, 1982;Urbini et al, 2008). Frezzotti et al (2004Frezzotti et al ( , 2005 used snow radar as well as stake farms, ice cores, surface morphology and remote sensing to estimate spatial and temporal variability of the SMB along a transect from Terra Nova Bay to DC, and from D66 to Talos Dome (Magand et al, 2004).…”

“…Results were compared with historical data in the region (Pettré et al, 1986;Mulvaney and Wolff, 1994;Pourchet et al, 2003;Frezzotti et al, 2004;Urbini et al, 2008) and to four SMB climatologies (Arthern et al, 2006;van de Berg et al, 2006, ERAInterim and LMDZ4). We focused on the pre-industrial to the industrial period, which spans the last 300 yr (approximately the top 70 m of snow, or the first 750 ns of the radargrams).…”