Published November 27, 2024
| Version v2
Dataset
Open
Data accompanying manuscript: 'Antarctic subglacial topography mapped from space reveals complex mesoscale landscape dynamics'
Description
This upload contains the data which accompanies the manuscript: 'Antarctic subglacial topography mapped from space reveals complex mesoscale landscape dynamics'.
Metrics calculated for each of the 4269 50 km by 50 km regions
| Filename (IFPA) | Filename (Bedmachine) | Filename (Bedmap3) | Description |
| x_ifpa.nc y_ifpa.nc |
X and Y coordinates | ||
| mean_ifpa.nc or ifpa_mean.nc | bedmach_mean.nc | Mean elevation (m) | |
|
ifpa_count.nc |
bedmach_count.nc bedmach_count_max_20.nc bedmach_count_max_100.nc bedmach_count_max_250.nc |
The number of hills with a 50 m prominence within a 5 km neighbourhood |
|
| ifpa_b1_5km.nc ifpa_b1_thickness.nc |
bedmach_b1_5km.nc bedmach_b1_thickness.nc |
The fourier fractal dimension for wavelengths greater than 5 km or the ice thickness respectively | |
| ifpa_std_deslope.nc i_std_l.nc |
bedmach_std_deslope.nc b_std_l.nc |
The standard deviation: - with the best fit slope removed - of some long wavelength components of the fourier spectrum |
|
| ifpa_wav_max_power.nc | bedmach_wav_max_power.nc | The wavelength in the Fourier spectrum with the maximum power | |
| ifpa_rms_slope.nc i_rms_slope_h.nc |
bedmach_rms_slope.nc b_rms_slope_h.nc |
The RMS slope of: - the bed elevation - some short wavelength components of the fourier spectrum |
|
| ifpa_rms_curvature.nc | bedmach_rms_curvature.nc | The RMS curvature of the bed elevation | |
| source.nc | The method used to calculate the bed topography (Bedmachine only) | ||
| mean_nearest.nc | The mean distance from each IFPA grid point to the nearest Bedmap3 data point | ||
| bedmap3_count.nc | The number of Bedmap3 data points within the region |
Datasets required for plotting
| Filename | Description |
| Groundingline_Antarctica_v2.shp | Antarctic grounding line |
| ECR_features.shp | Outline of significant features within the example regions chosen |
| IFPA_bed.nc | OLD VERSION of IFPA bed topography map for Antarctica |
|
IFPA_bed_C50.nc |
IFPA bed topography map for Antarctica (without radar correction) |
To plot the figures, you will either require the following datasets:
| Filename | Description |
| IFPA_figures_data.zip | Additionally data to plot figures 1,6,8 and 9 |
|
HA_data.csv |
For Highland A, Highland B and Recovery Subglacial Basin IFPA (radar corrected), IFPA (not radar corrected), Bedmachine v3, and ice-penetrating radar profiles |
|
HA_data_ifpa.csv |
For Highland A, Highland B and Recovery Subglacial Basin |
or, the figures can be regenerated using the following datasets, which are available at the listed DOIs
| Filename | Description | Reference | DOI |
| GaplessREMA100.nc | Gapless REMA Antarctica dataset at 100m resolution | Dong et al. (2022) | 10.1016/j.isprsjprs.2022.01.024 |
| BedMachineAntarctica-v3.nc | MEaSURES BedMachine Antarctica bed topography map version 3 | Morlighem et al. (2020) | 10.5067/FPSU0V1MWUB6 |
| antarctica_ice_velocity_450m_v2.nc | ITSLIVE Antarctic velocity map | Gardner et al. (2019) | 10.5067/6II6VW8LLWJ7 |
| antarctic_ice_vel_phase.nc | MEaSURES Antarctic velocity map | Mouginot et al. (2019) | 10.5067/PZ3NJ5RXRH10 |
| UTIG_2010_ICECAP_AIR_BM3.csv | Bed elevation from airborne radar from the UTIG Icecap survey | Wright et al. (2012) | 10.1029/2011JF002066 |
| BAS_2012_ICEGRAV_AIR_BM3.csv | Bed elevation from airborne radar from the BAS Icegrav survey | Forsberg et al. (2018) | 10.1144/SP461.17 |
Files
HA_data.csv
Files
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Additional details
Funding
- Natural Environment Research Council
- University of Edinburgh, E4 DTP NE/S007407/1
- Natural Environment Research Council
- International Thwaites Glacier Collaboration (GHOST) NE/S006672
- U.S. National Science Foundation
- International Thwaites Glacier Collaboration (GHOST) PLR 1738934
Software
- Programming language
- Python