Results 71 to 80 of about 101,389 (308)
Monitoring changes of the Antarctic Ice sheet by GRACE, ICESat and GNSS
Contributions to Geophysics and Geodesy, 2019 In this study, we estimate the ice mass changes, the ice elevation changes and the vertical displacements in Antarctica based on analysis of multi-geodetic datasets that involve the satellite gravimetry (GRACE), the satellite altimetry (ICESat) and the ...
Fang ZOU +2 more
doaj +1 more source
Antarctic Ice Sheet and Radar Altimetry: A Review [PDF]
Remote Sensing, 2009 Altimetry is probably one of the most powerful tools for ice sheet observation. Our vision of the Antarctic ice sheet has been deeply transformed since the launch of the ERS1 satellite in 1991. With the launch of ERS2 and Envisat, the series of altimetric observations now provides 19 years of continuous and homogeneous observations that allow ...
Rémy, F., Parouty, Soazig
openaire +2 more sources
Millennial‐Scale Vulnerability of the Antarctic Ice Sheet to Regional Ice Shelf Collapse
Geophysical Research Letters, 2019 The Antarctic Ice Sheet (AIS) remains the largest uncertainty in projections of future sea level rise. A likely climate‐driven vulnerability of the AIS is thinning of floating ice shelves resulting from surface‐melt‐driven hydrofracture or incursion of ...
Daniel F. Martin +2 more
doaj +1 more source
Grounding-line flux formula applied as a flux condition in numerical simulations fails for buttressed Antarctic ice streams [PDF]
The Cryosphere, 2018 Currently, several large-scale ice-flow models impose a condition on ice flux across grounding lines using an analytically motivated parameterisation of grounding-line flux.
R. Reese +4 more
doaj +1 more source
Widespread movement of meltwater onto and across Antarctic ice shelves [PDF]
, 2017 Surface meltwater drains across ice sheets, forming melt ponds that can trigger ice-shelf collapse acceleration of grounded ice flow and increased sea-level rise.
Bell, R.E. +3 more
core +1 more source
GRANTSISM: An Excel™ ice sheet model for use in introductory Earth science courses [PDF]
, 2018 GRANTISM (GReenland and ANTarctic Ice Sheet Model) is an educational Excel™ model introduced by Pattyn (2006). Here, GRANTISM is amended to simulate the Svalbard-Barents-Sea Ice Sheet during the Last Glacial Maximum, an analogue for the contemporary West
Gowan, Evan J. +6 more
core +2 more sources
A model of the Antarctic Ice Sheet
Nature, 1982 Numerical modelling of ice sheets and glaciers has become a useful tool in glaciological research. A model described here deals with the vertical mean ice velocity, is time dependent, computes bedrock adjustment and uses an empirical diagnostic relationship to derive the distribution of ice thickness in ice shelves.
openaire +3 more sources
Keeping an Eye on Antarctic Ice Sheet Stability [PDF]
Oceanography, 2019 Knowledge of how the Antarctic Ice Sheet (AIS) responded in the geologic past to warming climates will provide powerful insight into its poorly understood role in future global sea level change. Study of past natural climate changes allows us to determine the sensitivity of the AIS to higher-than-present atmospheric carbon dioxide (CO) concentrations ...
Escutia, Carlota +5 more
openaire +4 more sources
Antarctic-wide annual ice flow maps from Landsat 8 imagery between 2013 and 2019
International Journal of Digital Earth, 2021 Ice velocity constitutes a key parameter for quantifying ice-sheet discharge rates and is thus crucial for improving the coupled models of the Antarctic ice sheet towards accurately predict its contribution to future global sea-level rise.
Qiang Shen +6 more
doaj +1 more source
Remote Sensing, 2023 In polar regions, positive feedback of snow and ice albedo can intensify global warming. While recent significant decreases in Arctic surface ice albedo have drawn considerable attention, Antarctic surface albedo variability remains underexplored.
Yuqi Sun +3 more
doaj +1 more source