Falk, Ulrike; Gieseke, Hilke; Kotzur, Franziska; Braun, Matthias Holger (2015): Snow and ice surfaces on King George Island (Antarctic Peninsula) with high-resolution TerraSAR-X time series, with links to shapfiles and GeoTIFFs [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.853954, Supplement to: Falk, U et al. (2015): Monitoring snow and ice surfaces on King George Island, Antarctic Peninsula, with high-resolution TerraSAR-X time series. Antarctic Science, 15 pp, https://doi.org/10.1017/S0954102015000577
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Changes of glaciers and snow cover in polar regions affect a wide range of physical and ecosystem processes on land and in the adjacent marine environment. In this study, we investigate the potential of 11-day repeat high-resolution satellite image time series from the TerraSAR-X mission to derive glaciological and hydrological parameters on King George Island, Antarctica during the period Oct/25/2010 to Apr/19/2011. The spatial pattern and temporal evolution of snow cover extent on ice-free areas can be monitored using multi-temporal coherence images. SAR coherence is used to map glacier extent of land terminating glaciers with an average accuracy of 25 m. Multi-temporal SAR color composites identify the position of the late summer snow line at about 220 m above sea level. Glacier surface velocities are obtained from intensity feature-tracking. Surface velocities near the calving front of Fourcade Glacier were up to 1.8 ± 0.01 m/d. Using an intercept theorem based on fundamental geometric principles together with differential GPS field measurements, the ice discharge of Fourcade Glacier was estimated to 20700 ± 5500 m**3/d (corresponding to ~19 ± 5 kt/d). The rapidly changing surface conditions on King George Island and the lack of high-resolution digital elevation models for the region remain restrictions for the applicability of SAR data and the precision of derived products.
Project(s):
Coverage:
Latitude: -62.022000 * Longitude: -58.294000
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Falk, Ulrike | |||
| 2 | File format | File format | Falk, Ulrike | |||
| 3 | Uniform resource locator/link to file | URL file | Falk, Ulrike | |||
| 4 | File size | File size | kByte | Falk, Ulrike | of zip archive |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
16 data points