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  • 1
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    New estimations of precipitation and surface sublimation in East Antarctica from snow accumulation measurements (2008)
    Springer - Verlag
    Details
    Publication Date: 2021-01-27
    Description: Surface mass balance (SMB) distribution and its temporal and spatial variability is an essential input parameter in mass balance studies. Different methods were used, compared and integrated (stake farms, ice cores, snow radar, surface morphology, remote sensing) at eight sites along a transect from Terra Nova Bay (TNB) to Dome C (DC) (East Antarctica), to provide detailed information on the SMB. Spatial variability measurements show that the measured maximum snow accumulation (SA) in a 15 km area is well correlated to firn temperature. Wind-driven sublimation processes, controlled by the surface slope in the wind direction, have a huge impact (up to 85% of snow precipitation) on SMB and are significant in terms of past, present and future SMB evaluations. The snow redistribution process is local and has a strong impact on the annual variability of accumulation. The spatial variability of SMB at the kilometre scale is one order of magnitude higher than its temporal variability (20–30%) at the centennial time scale. This high spatial variability is due to wind-driven sublimation. Compared with our SMB calculations, previous compilations generally over-estimate SMB, up to 65% in some areas.
    Description: Published
    Description: 803-813
    Description: 3.8. Geofisica per l'ambiente
    Description: JCR Journal
    Description: reserved
    Keywords: East Antarctica ; Surface Mass Balance ; Snow accumulation ; GPR ; GPS ; 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction ; 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 2
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    Unknown
    Spatial and temporal variability of snow accumulation in East Antarctica from traverse data (2008)
    International Glaciological Society
    Details
    Publication Date: 2021-01-27
    Description: Recent snow accumulation rate is a key quantity for ice core and mass balance studies. Several accumulation measurement methods (stake farm, fin core, snow-radar profiling, surface morphology, remote sensing) were used, compared and integrated at eight sites along a transect from Terra Nova Bay to Dome C (East Antarctica) to provide information about the spatial and temporal variability of snow accumulation. Thirty-nine cores were dated by identifying tritium/β marker levels (1965–66[AUTHOR: Please check dates, I don’t think this agrees with table 1]) and no-sea-salt (nss) SO4 raised to the power of 2– spikes of the Tambora volcanic event (1816) in order to provide information on temporal variability. Cores were linked by snow radar and GPS surveys to provide detailed information on spatial variability in snow accumulation. Stake farm and ice core accumulation rates are observed to differ significantly, but isochrones (snow radar) correlate well with ice core derived accumulation. The accumulation/ablation pattern from stake measurements suggests that the annual local noise (metre scale) in snow accumulation can approach 2 years of ablation and more than four times the average annual accumulation, with no accumulation or ablation for a 5-year period in up to 40% of cases. The spatial variability of snow accumulation at the kilometre scale is one order of magnitude higher than temporal variability at the multi-decadal/secular scale. Stake measurements and firn cores at Dome C confirm an approximate 30% increase in accumulation over the last two centuries, with respect to the average over the last 5000 years.
    Description: Published
    Description: 113-124
    Description: 3.8. Geofisica per l'ambiente
    Description: JCR Journal
    Description: reserved
    Keywords: East Antarctica ; GPR ; GPS ; snow accumulation ; 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction ; 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 3
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    Unknown
    The Italian ITASE Expedition from D85 to M4 (East Antarctica) (2008)
    Terra Antartica Publication
    Details
    Publication Date: 2017-04-04
    Description: As a part of ITASE project (International Trans-Antarctic Scientific Expedition; Mayewski & Goodwin, 1999), between November 2001 and January 2002, the Italian Programma Nazionale di Ricerche in Antartide made a traverse through Adélie, George V, Oates and northern Victoria Lands (Fig. l , Tab. 1). The study aimed to better understand latitudinal and longitudinal gradients along one East-West (D66 - Talos Dome) and two North-South (D85 - D59 and GV7 - Talos Dome - M4) transects, while documenting climatic, atmospheric and surface conditions during the last 200-1000 years in the eastern and north-eastern portions of the Dome C drainage area and in northern Victoria Land. During the 1998/1999 season members of the Italian Antarctic programme made the first traverse from Terra Nova Bay to Dome C (Frezzotti & Flora, 2002). The traverse in the eastern Dome C drainage area took place between 20 November 1998 and 16 January 1999, and covered about 1300 km. The traverse team consisted of eight people: three mechanics and five scientists (four Italians and a French guest). During the 2000/2001 season 69 tons of supplies (fuel, food, snow box, etc.) for the 2001/2002 ITASE campaign were delivered from Cape Prud'homme on the forward legs of the transport traverses (IPEV-PNRA) between Dumont d'Urville and Dome C; the ITASE vehicles were delivered from Dome C to D85 on the return legs of the IPEV-PNRA traverses (Patrice Godon officer in charge of the traverse, personal communication).
    Description: Published
    Description: Milan, 25-26 June 2002 / Dipartimento di Scienze Ambiente e Territorio (DISAT), Università di Milano Bicocca, P.zza della Scienza 1, 20126 Milano
    Description: 3.8. Geofisica per l'ambiente
    Description: open
    Keywords: East Antarctica ; ITASE Project ; RES system ; GPR ; Geophysical survey ; 02. 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 ; 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
    Location Call Number Limitation Availability
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    PAPER (OA)
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