Franke, Steven; Jansen, Daniela; Binder, Tobias; Dörr, Nils; Helm, Veit; Paden, John D; Steinhage, Daniel; Eisen, Olaf (2023): TWT and ice thickness of the North East Greenland Ice Stream (tabular data) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.907917, In: Franke, S et al. (2019): Bedrock topography and ice thickness in the onset region of the Northeast Greenland Ice Stream recorded with the airborne AWI Ultra-Wideband radar (UWB) in 2018 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.907918
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Abstract:
Here, we present a record of more than 8000 km of radar survey lines of radio echo sounding data covering an area of 24 000 km2 centred on the drill site for the East Greenland Ice-core Project (EGRIP) in the central part of the North East Greenland Ice Stream (NEGIS). The acquisition system was a multichannel ultra-wideband radar mounted on AWI's Polar6 aircraft. Our data yield a new detailed model of ice-thickness distribution and basal topography in the region.
Keyword(s):
Coverage:
Median Latitude: 75.470917 * Median Longitude: -36.108618 * South-bound Latitude: 74.335533 * West-bound Longitude: -39.524483 * North-bound Latitude: 76.667267 * East-bound Longitude: -32.286476
Date/Time Start: 2018-05-08T18:37:10 * Date/Time End: 2018-05-17T14:41:47
Minimum POINT DISTANCE from start: 0.0 m * Maximum POINT DISTANCE from start: 90350.3 m
Event(s):
EGRIP-NOR-18 * Latitude: 75.633000 * Longitude: -35.992000 * Campaign: P6_211_EGRIP_NOR_2018 (EGRIP-NOR) * Basis: POLAR 6 * Method/Device: Multiple investigations (MULT)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DATE/TIME | Date/Time | Eisen, Olaf | Geocode – UTC | ||
| 3 | Flight number | Flight | Eisen, Olaf | |||
| 4 | Profile | Profile | Eisen, Olaf | Profile ID in the AWI UWB system | ||
| 5 | Profile | Profile | Eisen, Olaf | Profile ID in the ECHOS/Paradigm system | ||
| 6 | Number | No | Eisen, Olaf | Trace number in a profile | ||
| 7 | LONGITUDE | Longitude | Eisen, Olaf | Geocode | ||
| 8 | LATITUDE | Latitude | Eisen, Olaf | Geocode | ||
| 9 | Two-way traveltime | TWT | ns | Eisen, Olaf | Surface | |
| 10 | Two-way traveltime | TWT | ns | Eisen, Olaf | Bed | |
| 11 | Two-way traveltime | TWT | ns | Eisen, Olaf | Ice | |
| 12 | Ice thickness | Ice thick | m | Eisen, Olaf | Ultra-wideband radar (UWB), MCoRDS 5 | derived from Ice_TWT_ns and the constant velocity profile |
| 13 | Ice thickness, uncertainty | Ice thick unc | ± | Eisen, Olaf | Ultra-wideband radar (UWB), MCoRDS 5 | based on the mean crossover deviation and dielectric error of 1% |
| 14 | POINT DISTANCE from start | Dist | m | Eisen, Olaf | Geocode – along-track distance of a profile |
Change history:
2022-07-19T09:04:41 – The authorship was extended to include all paper co-authors
2023-06-13T13:19:49 – Dataset has been extended with information on profile IDs and with ice thickness measurements, title has been adjusted accordingly
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
4352291 data points
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