Zuhr, Alexandra; Franke, Steven; Steinhage, Daniel; Helm, Veit: Internal Reflection Horizons (IRHs) in western Dronning Maud Land, East Antarctica, from airborne radar surveys (IRH age = 0.636 ka) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983772 (dataset in review), In: Zuhr, A et al.: Internal Reflection Horizons (IRHs) in western Dronning Maud Land, East Antarctica, from airborne radar surveys (1209 to 2023) [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983767 (dataset in review)
Abstract:
We present five internal reflection horizons (IRHs) derived from airborne radar data in western Dronning Maud Land on the East Antarctic Plateau. The data were collected during the 2023/24 season using the AWI ultra-wideband radar system in wideband mode (150–520 MHz). Information from firn core B52 are used for dating the IRHs, which span the period from 1209 to 2024. Surface mass balance is derived from each IRH for the mass per time between two consecutive IRHs.
Keyword(s):
Related to:
Zuhr, Alexandra; Franke, Steven; Steinhage, Daniel; Helm, Veit: ANT 2023/24: AWI airborne ultra-wideband radar data over the plateau area in western Dronning Maud Land, East Antarctica (SnACC DML Project) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.981128
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PA_02146: QUASNO, SnAcc DML, P6-244_ANT_23_24
German Research Foundation (DFG), grant/award no. 522419679: Is Dronning Maud Land mitigating sea level rise in the 21st century? Quantifying the anthropogenically induced change in snow accumulation in East Antarctica
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -75.027899 * Median Longitude: 4.741564 * South-bound Latitude: -76.750549 * West-bound Longitude: -3.694789 * North-bound Latitude: -72.749847 * East-bound Longitude: 17.444313
Date/Time Start: 2023-11-29T09:28:44 * Date/Time End: 2023-12-11T20:15:30
Event(s):
P6_244_ANT_23_24_2311290701 (Flight 7) * Latitude Start: -71.955823 * Longitude Start: 2.474283 * Latitude End: -71.955822 * Longitude End: 2.474345 * Date/Time Start: 2023-11-29T09:28:44 * Date/Time End: 2023-11-29T14:03:45 * Campaign: P6-244_ANT_23_24 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6_244_ANT_23_24_2312111501 (Flight 15) * Latitude Start: -71.955671 * Longitude Start: 2.474806 * Latitude End: -75.001053 * Longitude End: 0.060699 * Date/Time Start: 2023-12-11T09:56:31 * Date/Time End: 2023-12-11T14:27:31 * Campaign: P6-244_ANT_23_24 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6_244_ANT_23_24_2312111602 (Flight 16) * Latitude Start: -75.001001 * Longitude Start: 0.061876 * Latitude End: -71.955648 * Longitude End: 2.474805 * Date/Time Start: 2023-12-11T15:54:31 * Date/Time End: 2023-12-11T20:15:30 * Campaign: P6-244_ANT_23_24 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Zuhr, Alexandra | |||
| 2 | Paradigm ID | Paradigm ID | Zuhr, Alexandra | Radar profile ID in the Paradigm system (AWI radar archive and tracing software) | ||
| 3 | Profile ID | Profile ID | Zuhr, Alexandra | Radar profile ID | ||
| 4 | Instrument | Instrument | Zuhr, Alexandra | |||
| 5 | Radar product | Radar prod | Zuhr, Alexandra | |||
| 6 | Trace Number | Trace | Zuhr, Alexandra | |||
| 7 | LONGITUDE | Longitude | Zuhr, Alexandra | Geocode | ||
| 8 | LATITUDE | Latitude | Zuhr, Alexandra | Geocode | ||
| 9 | Internal reflection horizon, age | IRH age | ka | Zuhr, Alexandra | ||
| 10 | Internal reflection horizon, age, uncertainty | IRH age unc | ka | Zuhr, Alexandra | ||
| 11 | Two-way traveltime to internal reflection horizon | TWT IRH | ns | Zuhr, Alexandra | ||
| 12 | Depth of internal reflection horizon, below ice surface | Depth IRH | m | Zuhr, Alexandra | twt-to-depth conversion, below surface, in meters, see Franke et al., 2024 for method and Zuhr et al., in prep for more details | |
| 13 | Depth of internal reflection horizon, below ice surface, in water equivalents | Depth IRH w.e. | m w.e. | Zuhr, Alexandra | ||
| 14 | Surface elevation | Surf elev | m | Zuhr, Alexandra | Reference Elevation Model of Antarctica (REMA, Howat et al. 2019) | |
| 15 | Surface mass balance, in water equivalent | SMB w.e. | mm w.e. | Zuhr, Alexandra | ||
| 16 | Surface mass balance, upper uncertainty limit | SMB unc up | mm w.e. | Zuhr, Alexandra | ||
| 17 | Surface mass balance, lower uncertainty limit | SMB unc low | mm w.e. | Zuhr, Alexandra |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
2324853 data points
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