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High-resolution ice thickness and bed topography of a land-terminating section of the Greenland Ice Sheet
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
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Number of Authors: 9
2014 (English)In: Earth System Science Data, ISSN 1866-3508, E-ISSN 1866-3516, Vol. 6, no 2, 331-338 p.Article in journal (Refereed) Published
Abstract [en]

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 similar to 12 000 km(2) and cover the whole ablation area of the outlet glaciers of Isunnguata Sermia, Russell, Leverett, Orkendalen and Isorlersuup up to the long-term mass balance equilibrium line altitude at similar to 1600m 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 similar to 500m 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.

Place, publisher, year, edition, pages
2014. Vol. 6, no 2, 331-338 p.
National Category
Earth and Related Environmental Sciences
Research subject
Physical Geography
Identifiers
URN: urn:nbn:se:su:diva-119096DOI: 10.5194/essd-6-331-2014ISI: 000356933900005OAI: oai:DiVA.org:su-119096DiVA: diva2:843359
Available from: 2015-07-28 Created: 2015-07-28 Last updated: 2017-04-27Bibliographically approved

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