High-resolution ice thickness and bed topography of a land-terminating section of the Greenland Ice Sheet
We present ice thickness and bed topography maps with a high spatial resolution (250–500 m) of a land-terminating section of the Greenland Ice Sheet derived from ground-based and airborne radar surveys. The data have a total area of ~12 000 km<sup>2</sup> and cover the whole ablation are...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2014-09-01
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| Series: | Earth System Science Data |
| Online Access: | http://www.earth-syst-sci-data.net/6/331/2014/essd-6-331-2014.pdf |
| Summary: | We present ice thickness and bed topography maps with a high spatial
resolution (250–500 m) of a land-terminating section of the Greenland Ice
Sheet derived from ground-based and airborne radar surveys. The data have a
total area of ~12 000 km<sup>2</sup> and cover the whole ablation
area of the outlet glaciers of Isunnguata Sermia, Russell, Leverett,
Ørkendalen and Isorlersuup up to the long-term mass balance equilibrium
line altitude at ~1600 m above sea level. The bed topography
shows highly variable subglacial trough systems, and the trough of
Isunnguata Sermia Glacier is overdeepened and reaches an elevation of ~500 m below sea level. The ice surface is smooth and only reflects the
bedrock topography in a subtle way, resulting in a highly variable ice
thickness. The southern part of our study area consists of higher bed
elevations compared to the northern part. The compiled data sets of
ground-based and airborne radar surveys cover one of the most studied
regions of the Greenland Ice Sheet and can be valuable for detailed studies
of ice sheet dynamics and hydrology. The combined data set is freely
available at doi:10.1594/pangaea.830314. |
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| ISSN: | 1866-3508 1866-3516 |