Franke, Steven; Jansen, Daniela; Drews, Reinhard; Steinhage, Daniel; Helm, Veit; Eisen, Olaf (2025): ANT 2018/19: AWI airborne ultra-wideband radar data over the ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982515 (DOI registration in progress)
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Published: 2025-05-26
Abstract:
We present a high-resolution airborne radar data set for the Princess Ragnhild Coast, Dronning Maud Land, East Antarctica. The radar data has been acquired in December 2018 and January 2019 with the Alfred Wegener Institute (AWI) multichannel ultra-wideband radar mounted on the Polar6 aircraft. Radar profiles cover the Princess Ragnhild Coast in Dronning Maud Land, East Antarctica (20° E - 28° E). They cover the western Roi Baudouin Ice Shelf, the Jotneisen Ice Shelf, and the eastern Munisen Ice Shelf as well as the three ice rises Hamarryggen, Lokeryggen and Derwael. Even though the Princess Ragnhild coast has been close to balance in recent decades and is likely dynamically stable , the individual catchments are sensitive to increased ocean melting because some tributary glaciers rest on a retrograde, landward sloping bed . Together, the catchments drain a land ice mass with a eustatic sea-level equivalent of 2 m.The data are available for both data products (qlook: unfocused; standard: SAR focused) as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams.
Keyword(s):
Supplement to:
Koch, Inka; Drews, Reinhard; Franke, Steven; Jansen, Daniela; Oraschewski, Falk M; Muhle, Leah Sophie; Višnjević, Vjeran; Matsuoka, Kenichi; Pattyn, Frank; Eisen, Olaf (2023): Radar internal reflection horizons from multisystem data reflect ice dynamic and surface accumulation history along the Princess Ragnhild Coast, Dronning Maud Land, East Antarctica. Journal of Glaciology, 1-19, https://doi.org/10.1017/jog.2023.93
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
Koch, Inka; Drews, Reinhard; Muhle, Lea Sophie; Franke, Steven; Jansen, Daniela; Oraschewski, Falk M; Spiegel, Heiko; Višnjević, Vjeran; Matsuoka, Kenichi; Pattyn, Frank; Eisen, Olaf (2023): Internal reflection horizons of ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica) from multisystem radio-echo sounding data [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.950383
Zhou, Yan; Franke, Steven; Kleiner, Thomas; Drews, Reinhard; Humbert, Angelika; Jansen, Daniela; Steinhage, Daniel; Eisen, Olaf (2025): Reactivation of a Subglacial Channel Around the Grounding Zone of Roi Baudouin Ice Shelf, Antarctica. Geophysical Research Letters, 52(2), e2024GL112476, https://doi.org/10.1029/2024GL112476
Additional metadata:
O2A Registry: Metadata for radar system Ultra-wideband ice radar at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, https://registry.o2a-data.de/items/6809
Coverage:
Median Latitude: -71.950848 * Median Longitude: 18.092984 * South-bound Latitude: -71.955520 * West-bound Longitude: 2.472661 * North-bound Latitude: -71.949284 * East-bound Longitude: 23.299970
Date/Time Start: 2018-12-31T09:54:35 * Date/Time End: 2019-01-07T11:42:15
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)
Comment:
Project: CHIRP (Channel and Ice Rise Project in DML)
Region: Ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica)
Data Owner/Correspondence:
Olaf Eisen (Alfred Wegener Institut Bremerhaven, Germany), Contact: olaf.eisen@awi.de
Reinhard Drews (Universität Tübingen, Germany), Contact: reinhard.drews@uni-tuebingen.de
Daniela Jansen (Alfred Wegener Institut Bremerhaven, Germany), Contact: daniela.jansen@awi.de
Veit Helm (Alfred Wegener Institut Bremerhaven, Germany), Contact: veit.helm@awi.de
Instrument used: AWI UWB (MCoRDS 5)
Data products: CSARP_standard (SAR focussed), CSARP_qlook (unfocussed)
Data product documentation: https://data.cresis.ku.edu/data/rds/rds_readme.pdf
Method of navigation : GPS data was acquired by four NovAtel DL-V3 GPS receivers operating at 20Hz
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The netCDF files contain the following variables:
altitude: Platform altitude (WGS84) in meters
bed_elevation: Bed elevation for each trace (without applying a firn correction and permitivity of ice: 3.15) in meters
bed_pick: picked Bed location for each trace, expressed as twt in seconds from time zero
data: Radar data (Values in dBm after DC conversion)
data_agc: Scaled radar data using automatic gain control (AGC)
distance: Along-track distance in meters
ice_thickness: Ice thickness for each trace (without applying a firn correction and permitivity of ice: 3.15) in meters
lat: Latitude in decimal degrees (WGS84)
lon: Longitude in decimal degrees (WGS84)
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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Note that the surface picks were quality-checked for the standard product. For the qlook product only an auto-tracked surface pick is available.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Franke, Steven | |||
| 2 | Event label | Event | Franke, Steven | |||
| 3 | Profile ID | Profile ID | Franke, Steven | |||
| 4 | Instrument | Instrument | Franke, Steven | |||
| 5 | Radar product | Radar prod | Franke, Steven | |||
| 6 | netCDF file | netCDF | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | standard | |
| 7 | netCDF file (File Size) | netCDF (Size) | Bytes | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | standard |
| 8 | netCDF file | netCDF | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | qlook | |
| 9 | GIS file | GIS | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | KML Files, standard | |
| 10 | GIS file | GIS | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | KML Files, qlook | |
| 11 | Image | IMAGE | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | Quicklook, standard | |
| 12 | Image | IMAGE | Franke, Steven | Ultra-wideband radar (UWB), MCoRDS 5 | Quicklook, qlook |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
450 data points