Drews, Reinhard; Matsuoka, Kenichi; Martín, Carlos; Callens, Denis; Bergeot, N; Pattyn, Frank (2025): Radar-derived Surface Mass Balance at Derwael Ice Rise, Dronning Maud Land, Antarctica [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.983631
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Published: 2025-09-15 • DOI registered: 2025-10-14
Abstract:
This dataset provides surface mass balance estimates (also referred to as surface accumulation rates) derived from shallow radar stratigraphy of Derwael Ice Rise located in Dronning Maud Land, Antarctica. The underlying assumption is that the radar-detected stratigraphy is isochronal-representing former snow surfaces that have been buried since deposition. By correlating these isochrones with a dated firn core, an age can be assigned to each layer. Combined with a density-depth profile, also obtained from the firn core, this allows the estimation of the temporally averaged surface mass balance rate. This rate varies spatially with the depth of the isochrone. In this case, the surface mass balance estimates represent an average over the 21 years preceding 2012 CE. Spatial variation in accumulation is among others influenced by orographic effects induced by the topography of the ice rise. These data have been used as forcing for a model predicting patterns in the deeper radar stratigraphy, but they can also be used, e.g., to investigate the dependency of surface mass balance on surface slope and weather patterns in general.
Keyword(s):
Related to:
Drews, Reinhard; Matsuoka, Kenichi; Martín, Carlos; Callens, Denis; Bergeot, N; Pattyn, Frank (2015): Evolution of Derwael Ice Rise in Dronning Maud Land, Antarctica, over the last millennia. Journal of Geophysical Research-Earth Surface, 120(3), 564-579, https://doi.org/10.1002/2014JF003246
References:
Callens, Denis; Drews, Reinhard; Witrant, Emmanuel; Philippe, Morgane; Pattyn, Frank (2016): Temporally stable surface mass balance asymmetry across an ice rise derived from radar internal reflection horizons through inverse modeling. Journal of Glaciology, 62(233), 525-534, https://doi.org/10.1017/jog.2016.41
Philippe, Morgane; Tison, Jean-Louis; Fjøsne, Karen; Hubbard, Bryn; Kjær, Helle Astrid; Lenaerts, Jan T M; Drews, Reinhard; Sheldon, Simon G; De Bondt, Kevin; Claeys, Philippe; Pattyn, Frank (2016): Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica. The Cryosphere, 10(5), 2501-2516, https://doi.org/10.5194/tc-10-2501-2016
Funding:
Coverage:
Median Latitude: -70.229832 * Median Longitude: 26.352585 * South-bound Latitude: -70.293996 * West-bound Longitude: 26.142701 * North-bound Latitude: -70.178880 * East-bound Longitude: 26.553063
Event(s):
Comment:
DATA DESCRIPTION:
* radar type: Ground-based GSSI Radar
* frequency: 400 MHz
* Time Interval of Data Collection: 4-14 December 2012
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | LONGITUDE | Longitude | Drews, Reinhard | Geocode | ||
| 2 | LATITUDE | Latitude | Drews, Reinhard | Geocode | ||
| 3 | Polar stereographic projection, X | Polar stereo X | m | Drews, Reinhard | EPSG 3031 | |
| 4 | Polar stereographic projection, Y | Polar stereo Y | m | Drews, Reinhard | EPSG 3031 | |
| 5 | Surface mass balance, ice equivalent | SMB | m i.e. | Drews, Reinhard | Calculated | Averaged over 21 years prior to 2012 CE (meters per year ice equivalent, with density of ice 910 kg/m^3) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
122887 data points
Download Data
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