Surface elevation changes of the northern Antarctic Peninsula Ice Sheet (<70°S) derived from repeat bi-static SAR acquisitions for the period 2013-2017 ...

• Main Authors: Seehaus, Thorsten, Sommer, Christian, Malz, Philipp, Dethinne, Thomas
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Antarctic Peninsula; geodetic mass balance; InSAR; remote sensing; TanDEM-X; File content; Raster graphic, GeoTIFF format; Raster graphic, GeoTIFF format File Size; Raster graphic, GeoTIFF format MD5 Hash; Satellite remote sensing; Antarctic; Austral; The Antarctic; Antarc*; Antarctica; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.964536; https://doi.pangaea.de/10.1594/PANGAEA.964536

Some of the highest specific mass change rates in Antarctica are reported for the Antarctic Peninsula. However, the existing estimates for the northern Antarctic Peninsula (<70°S) are either spatially limited or are affected by considerable uncertainties. The complex topography, frequent cloud cover, limitations in ice thickness information, boundary effects, and uncertain glacial-isostatic adjustment estimates affect the ice sheet mass change estimates using altimetry, gravimetry, or the input-output method. Within this study, the first assessment of the geodetic mass balance throughout the ice sheet of the northern Antarctic Peninsula is carried out employing bi-static SAR data from the TanDEM-X satellite mission. Repeat coverages from austral-winters 2013 and 2017 are employed. Overall coverage of 96.4% of the study area by surface elevation change measurements and a total mass budget of -24.1±2.8 Gt/a is revealed. The spatial distribution of the surface elevation and mass changes points out, that the ... : For the analysis in the corresponding paper, the rock outcrops according to Silva et al. (2020) were applied. ...