DOI: 10.5281/zenodo.11127558
title: 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.ncy_ifpa.nc
 
 
X and Y coordinates


mean_ifpa.nc or ifpa_mean.nc
bedmach_mean.nc
 
Mean elevation (m)




ifpa_count.ncifpa_count_max_20.ncifpa_count_max_100.ncifpa_count_max_250.nc

bedmach_count.ncbedmach_count_max_20.ncbedmach_count_max_100.ncbedmach_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.ncifpa_b1_thickness.nc
bedmach_b1_5km.ncbedmach_b1_thickness.nc
 
The fourier fractal dimension for wavelengths greater than 5 km or the ice thickness respectively


ifpa_std_deslope.nci_std_l.nc
bedmach_std_deslope.ncb_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.nci_rms_slope_h.nc
bedmach_rms_slope.ncb_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.csvHB_data.csvRSB_data.csv

For Highland A, Highland B and Recovery Subglacial BasinIFPA (radar corrected), IFPA (not radar corrected), Bedmachine v3, and ice-penetrating radar profiles




HA_data_ifpa.csvHB_data_ifpa.csvRSB_data_ifpa.csv



For Highland A, Highland B and Recovery Subglacial BasinIFPA (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