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Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream

Franke, Steven; Jansen, Daniela ; Binder, Tobias; Paden, John D.; Dörr, Nils ORCID iD icon 1; Gerber, Tamara A.; Miller, Heinrich; Dahl-Jensen, Dorthe; Helm, Veit; Steinhage, Daniel; Weikusat, Ilka; Wilhelms, Frank; Eisen, Olaf
1 Institut für Photogrammetrie und Fernerkundung (IPF), Karlsruher Institut für Technologie (KIT)

Abstract:

We present a high-resolution airborne radar data set (EGRIP-NOR-2018) for the onset region of the Northeast Greenland Ice Stream (NEGIS). The radar data were acquired in May 2018 with the Alfred Wegener Institute's multichannel ultra-wideband (UWB) radar mounted on the Polar 6 aircraft. Radar profiles cover an area of ∼24 000 km2 and extend over the well-defined shear margins of the NEGIS. The survey area is centered at the location of the drill site of the East Greenland Ice-Core Project (EastGRIP), and several radar lines intersect at this location. The survey layout was designed to (i) map the stratigraphic signature of the shear margins with radar profiles aligned perpendicular to ice flow, (ii) trace the radar stratigraphy along several flow lines, and (iii) provide spatial coverage of ice thickness and basal properties. While we are able to resolve radar reflections in the deep stratigraphy, we cannot fully resolve the steeply inclined reflections at the tightly folded shear margins in the lower part of the ice column. The NEGIS is causing the most significant discrepancies between numerically modeled and observed ice surface velocities. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000143189
Veröffentlicht am 21.02.2022
Originalveröffentlichung
DOI: 10.5194/essd-14-763-2022
Scopus
Zitationen: 12
Web of Science
Zitationen: 9
Dimensions
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photogrammetrie und Fernerkundung (IPF)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 21.02.2022
Sprache Englisch
Identifikator ISSN: 1866-3516
KITopen-ID: 1000143189
Erschienen in Earth system science data
Verlag Copernicus Publications
Band 14
Heft 2
Seiten 763–779
Nachgewiesen in Web of Science
Scopus
Dimensions
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