Steinhage, Daniel; Miller, Heinrich; Helm, Veit: ARK 1996: AWI airborne Radio-Echo Sounding data over the NorthGRIP ice core site in central Greenland (NordGRIP project) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995056 (dataset in review)
Abstract:
This dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 1996. The profiles extend in a grid around the NorthGRIP ice core site in central Greenland. The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams.
Keyword(s):
Related to:
Eisen, Olaf; Steinhage, Daniel; Franke, Steven; Helm, Veit; Binder, Tobias; Drews, Reinhard; Eagles, Graeme; Humbert, Angelika; Jansen, Daniela; Jokat, Wilfried; Lambrecht, Astrid; Mieth, Matthias; Riedel, Sven; Miller, Heinrich (2024): Collection of datasets from AWI's radio-echo sounding systems on ice sheets and glaciers [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.972094
Franke, Steven; Steinhage, Daniel; Helm, Veit; Binder, Tobias; Nixdorf, Uwe; Miller, Heinrich; Humbert, Angelika; Jansen, Daniela; Eagles, Graeme; Eisermann, Hannes; Jokat, Wilfried; Ruppel, Antonia; Drews, Reinhard; Zuhr, Alexandra; Driemel, Amelie; Walter, Andreas; Konopatzky, Peter; Heß, Robin; Haas, Antonie; Koppe, Roland; Andreas, Pascal H; Eisen, Olaf (2026): Review article: 30 years of airborne radar surveys on the Antarctic and Greenland ice sheets by the Alfred Wegener Institute. The Cryosphere, 20(4), 2485-2530, https://doi.org/10.5194/tc-20-2485-2026
Göktas, Fidan (1999): Ergebnisse der Untersuchung des grönlandischen Inlandeises mit dem elektromagnetischen Reflexionsverfahren in der Umgebung von NGRIP (Results from airborne radio-echosounding of the Greenland icesheet in the vicinity of NGRIP). Berichte zur Polarforschung = Reports on Polar Research, 336, 97 pp, https://doi.org/10.2312/BzP_0336_1999
Nixdorf, Uwe; Göktas, Fidan (2001): Spatial depth distribution of the subglacial bed and internal layers in the ice around NGRIP, Greenland, derived with airborne RES. Journal of Applied Geophysics, 47(3-4), 175-182, https://doi.org/10.1016/S0926-9851(01)00062-3
Nixdorf, Uwe; Steinhage, Daniel; Meyer, Uwe F; Hempel, L; Jenett, Martin; Wachs, P; Miller, Heinrich (1999): The newly developed airborne radio-echo sounding system of the AWI as a glaciological tool. Annals of Glaciology, 29, 231-238, https://doi.org/10.3189/172756499781821346
Additional metadata:
O2A Registry: Metadata for radar system Ice Thickness Radar 150 MHz at current version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, https://registry.o2a-data.de/items/6794
Project(s):
North Greenland Ice Core Project (NGRIP)
Coverage:
Median Latitude: 74.451038 * Median Longitude: -42.770827 * South-bound Latitude: 67.012711 * West-bound Longitude: -50.838459 * North-bound Latitude: 75.284332 * East-bound Longitude: -37.945770
Date/Time Start: 1996-06-04T19:02:03 * Date/Time End: 1996-06-21T15:37:26
Event(s):
NGRIP_1996_01 * Latitude Start: 75.094803 * Longitude Start: -42.320992 * Latitude End: 75.091339 * Longitude End: -42.336830 * Date/Time Start: 1996-06-04T19:02:03 * Date/Time End: 1996-06-04T21:56:32 * Campaign: NGRIP_1996 * Basis: POLAR 2 * Method/Device: Aircraft (AC)
NGRIP_1996_02 * Latitude Start: 75.095413 * Longitude Start: -42.318249 * Latitude End: 75.055428 * Longitude End: -42.449650 * Date/Time Start: 1996-06-05T14:31:59 * Date/Time End: 1996-06-05T18:56:59 * Campaign: NGRIP_1996 * Basis: POLAR 2 * Method/Device: Aircraft (AC)
NGRIP_1996_03 * Latitude Start: 75.094429 * Longitude Start: -42.318810 * Latitude End: 75.284332 * Longitude End: -42.398399 * Date/Time Start: 1996-06-07T13:15:18 * Date/Time End: 1996-06-07T18:09:37 * Campaign: NGRIP_1996 * Basis: POLAR 2 * Method/Device: Aircraft (AC)
Comment:
Project PI: Daniel Steinhage (AWI)
Contact persons for AWI Radio-echo sounding data: Daniel Steinhage (daniel.steinhage@awi.de), Veit Helm (veit.helm@awi.de), Olaf Eisen (olaf.eisen@awi.de)
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The data are available as netCDF files, KML files, and quicklook images (JPEGs) of the radargrams.
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The netCDF files contain the following variables:
altitude: Platform altitude (WGS84) in meters
bed_elevation: bed elevation for each trace (using no firn correction and permitivity of ice: 3.15) in meters
bed_pick: picked bed location for each trace, expressed as twt in seconds
data: radar data
data_agc: scaled radar data using automatic gain control (AGC)
distance: Along-track distance in meters
ice_thickness: ice thickness for each trace (using no firn correction and permitivity of ice: 3.15) in meters
lat: Latitude in decimal degrees
lon: Longitude in decimal degrees
range: Range between sensor and surface in meters
spacing: along track trace to trace spacing in meters
surface: surface elevation derived from radar (WGS84) in meters
surface_pick: picked surface reflection in two-way travel time in seconds
time: Seconds of day
twt: Two-way travel time (twt) in seconds
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The KML files are in EPSG:4326, and the quicklook images show the AGC product of the radargram.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Steinhage, Daniel | |||
| 2 | Profile ID | Profile ID | Steinhage, Daniel | |||
| 3 | Instrument | Instrument | Steinhage, Daniel | |||
| 4 | Radar product | Radar prod | Steinhage, Daniel | |||
| 5 | netCDF file | netCDF | Steinhage, Daniel | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | ||
| 6 | netCDF file (File Size) | netCDF (Size) | Bytes | Steinhage, Daniel | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | |
| 7 | GIS file | GIS | Steinhage, Daniel | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | KML Files | |
| 8 | Image | IMAGE | Steinhage, Daniel | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | Quicklook |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
266 data points