Franke, Steven; Jansen, Daniela; Drews, Reinhard; Eisen, Olaf (2020): Ice thickness from the coast of Dronning Maud Land (Antarctica), recorded 2018/19 with the AWI UWB radar system [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.911868
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Abstract:
Ice thickness from the coast of Dronning Maud Land (Antarctica), recorded 2018/19 with the AWI UWB radar system
This project aims to acquire airborne data with AWI's UWB (ultrawideband) radar to investigate important aspects which define the dynamics of the sheet-shelf system in DML, Antarctica. This includes several ice rises, which serve as breaks for unhindered ice-shelf flow as well as a particular site just upstream of the grounding line, where strong interaction between a sediment-carrying, subglacial hydrological network, the ocean and the ice sheet are suspected. The data will lay the ground to constrain estimates of past ice flow and to understand stabilizing/destabilizing mechanisms in the most critical zone around Antarctica.
The radar lines collected for this survey were mainly flown over ice shelves and ice rises, covering areas with an ice thickness ranging from several hundreds to about 1000 m.
AWI Flight Campaign: P6-215_UWB_2018
Region: Coastal Dronning Maud Land
Owner/PI: Reinhard Drews (University of Tübingen, GER)
Contact of the data provider: daniela.jansen@awi.de
Instrument used: AWI UWB (MCoRDS 5)
Firn correction: none applied
Velocity profile: dielectric constant of 3.15 ( c = 1.68914e8 m/s )
Method of navigation : GPS data was acquired by four NovAtel DL-V3 GPS receivers operating at 20Hz
Ice Thickness uncertainty is the RMS of the the sum of the crossover mean of 29intersections (= 11.2 m) and the error of the dielectric (1%). sqrt( (crossover_mean)^2 + ( (-ice_thickness/2) * 0.01 )^2 )
Keyword(s):
Coverage:
Median Latitude: -70.754721 * Median Longitude: 20.287573 * South-bound Latitude: -71.824303 * West-bound Longitude: -3.123991 * North-bound Latitude: -70.061394 * East-bound Longitude: 28.052961
Date/Time Start: 2018-12-31T10:45:17 * Date/Time End: 2019-01-07T11:20:08
Minimum POINT DISTANCE from start: 0.0 m * Maximum POINT DISTANCE from start: 91179.0 m
Event(s):
P6_215_UWB_2018_1812311001 * Latitude Start: -71.955520 * Longitude Start: 2.472661 * Latitude End: -71.955501 * Longitude End: 2.472704 * Date/Time Start: 2018-12-31T09:54:35 * Date/Time End: 2018-12-31T13:09:34 * Campaign: P6-215_UWB_2018 (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6_215_UWB_2018_1901061201 * Latitude Start: -71.949299 * Longitude Start: 23.299943 * Latitude End: -71.949296 * Longitude End: 23.299577 * Date/Time Start: 2019-01-06T08:33:59 * Date/Time End: 2019-01-06T12:10:58 * Campaign: P6-215_UWB_2018 (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6_215_UWB_2018_1901061302 * Latitude Start: -71.949300 * Longitude Start: 23.299570 * Latitude End: -71.949295 * Longitude End: 23.299957 * Date/Time Start: 2019-01-06T13:05:47 * Date/Time End: 2019-01-06T16:26:47 * Campaign: P6-215_UWB_2018 (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Drews, Reinhard | |||
| 2 | DATE/TIME | Date/Time | Drews, Reinhard | Geocode – UTC | ||
| 3 | Flight number | Flight | Drews, Reinhard | |||
| 4 | Profile ID | Profile ID | Drews, Reinhard | in the AWI UWB system | ||
| 5 | Paradigm ID | Paradigm ID | Drews, Reinhard | in the ECHOS/Paradigm system | ||
| 6 | Trace Number | Trace | Drews, Reinhard | in a profile | ||
| 7 | LONGITUDE | Longitude | Drews, Reinhard | Geocode | ||
| 8 | LATITUDE | Latitude | Drews, Reinhard | Geocode | ||
| 9 | Two-way traveltime | TWT | ns | Drews, Reinhard | Bed_TWT - Surf_TWT | |
| 10 | Ice thickness | Ice thick | m | Drews, Reinhard | Ice Thickness Radar (EMR, MCoRDS) | |
| 11 | Ice thickness, uncertainty | Ice thick unc | ± | Drews, Reinhard | Ice Thickness Radar (EMR, MCoRDS) | |
| 12 | POINT DISTANCE from start | Dist | m | Drews, Reinhard | Geocode – along-track distance of a profile |
Change history:
2024-06-10T09:16:32 – Second "Profile" Parameter changed to "Paradigm ID"
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
911344 data points
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