DOI: 10.5281/zenodo.7870307
title: Dataset corresponding to the publication: Friction and slip measured at the bed of an Antarctic ice stream

description: The following data is included here, which comprises the data presented in the publication:<br> Hudson, T. S., Kufner, S., Brisbourne, A. M., Kendall, J., Smith, A. M., Arthern, R., & Alley, R. (2023). Friction and slip measured at the bed of an Antarctic ice stream. Nature Geoscience. Files included are:<br> all_icequakes_2018to2019.csv - A catalogue of the icequakes used in the study.<br> cluster_????.csv - csv files containing the results for each icequake, grouped by cluster (i.e. one csv file per cluster).<br> slip_rate_movie.mp4 - A movie of slip-rate for each icequake through time. Headers for the files are as follows:<br> ------------------------------------- all_icequakes_2018to2019.csv file -------------------------------------<br> origin_time - Origin time of icequake, in UTC time.<br> Mw - Moment magnitude.<br> Mw_err - Error in Mw.<br> fc - Corner frequency (Hz).<br> fc_err - Error in corner frequency.<br> Q - Quality factor (measure of attenuation).<br> Q_err - Error in Q.<br> inter-event_time_s - Inter-event time between this icequake and the previous icequake (s).<br> stress_drop - Stress-drop of icequake (Pa).<br> stress_drop_err - error in stress-drop.<br> lat - Latitude (decimal degrees).<br> lon - Longitude (decimal degrees).<br> x (km) - x grid location (km).<br> y (km) - y grid location (km).<br> z (km bsl) - Depth (km bsl).<br> x_err (km) - Error in x (km).<br> y_err (km) - Error in y (km).<br> z_err (km) - Error in z (km). ------------------------------------- cluster_XXXX.csv file -------------------------------------<br> mean_Mw - Mean moment magnitude for icequake from all receivers.<br> mean_fc - Corner frequency for icequake from all receivers (Hz).<br> stdev_Mw - Standard deviation in Mw.<br> stdev_fc - Standard deviation in corner-frequency.<br> mean_Q - Mean Q for icequake from all receivers.<br> stdev_Q - Standard deviation in Q.<br> n_obs - Number of receivers used to calculate above means.<br> lat - Latitude of icequake.<br> lons - Longitude of icequake.<br> depths - Depth of icequake (km bsl).<br> x - x location of icequake (km).<br> y - y location of icequake (km).<br> zs - z location of icequake (km bsl).<br> origin_time - Origin time of icequake (UTC time).<br> origin_time_days - Origin time in days relative to 1st January 2019 (days).<br> inter-event_time_s - Inter-event time from previous to current event (s).<br> stress_drop - Stress drop (Pa)<br> uncertainty_stress_drop - Uncertainty in stress-drop.<br> M_0 - Seismic moment release (Nm).<br> uncertainty_M_0 - Uncertainty in M_0.<br> fault_radius_m - Fault radius, in metres.<br> uncertainty_fault_radius_m - Uncertainty in fault radius (m).<br> slip_ice_m - Slip in the ice (m).<br> slip_till_m - Slip in the till (m).<br> uncertainty_slip_ice_m - Uncertainty in slip_ice_m.<br> uncertainty_slip_till_m - Uncertainty in slip_till_m.<br> RSF_v/v_0 - v/v_0 calculated for the rate-and-state model.<br> RSF_sigma - Normal stress calculated for the rate-and-state model (Pa).<br> RSF_tau - Shear-stress calculated for the rate-and-state model (Pa).<br> uncertainty_RSF_v/v_0 - Uncertainty in RSF_v/v_0.<br> uncertainty_RSF_sigma - Uncertainty in RSF_sigma.<br> uncertainty_RSF_tau - Uncertainty in RSF_tau.<br> RSF_G* - Effective shear-modulus calculated for the rate-and-state model (Pa).<br> RSF_Gb - Bed shear modulus calculated for the rate-and-state model (Pa).<br> RSF_slip_m - Slip calculated for the rate-and-state model (Pa).<br> uncertainty_RSF_G* - Uncertainty in RSF_G*.<br> uncertainty_RSF_Gb - Uncertainty in RSF_Gb.<br> uncertainty_RSF_slip_m - Uncertainty in RSF_slip_m.