Data accompanying manuscript: 'Antarctic subglacial topography mapped from space reveals complex mesoscale landscape dynamics'

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 ifpa_count_max_20.nc ifpa_count_max_100.nc ifpa_count_max_250.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 (or 20 m, 100 m, 250 m respectively) 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 HB_data.csv RSB_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 HB_data_ifpa.csv RSB_data_ifpa.csv For Highland A, Highland B and Recovery Subglacial Basin IFPA (radar corrected) map for the region crossed by the ice-penetrating radar profile 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

Ockenden, H. (2024). Data accompanying manuscript: 'Antarctic subglacial topography mapped from space reveals complex mesoscale landscape dynamics' [Data set]. Zenodo. https://doi.org/10.5281/zenodo.14228188