The supplementary material provided here consists of four space delimited ASCII tables containing origin times, locations, moment tensor solutions, and scalar moments for the mine tremors analyzed in this study.
Table E1 [ASCII Text File; 8 KB]. Origin times, hypocentral locations, and local magnitudes for the mine tremors analyzed in this study. The origin times are given in local South African time and the locations are given in a local mine-coordinate system where x is North, y is East, and z is Up. Event locations and origin times were reported by Integrated Seismic Systems International (ISSI).
Table E2 [ASCII Text File; 12 KB]. General moment tensor solutions for the 81 events analyzed in this study. The moment tensor components are given in the local mine-coordinate system, where x is North, y is East, and z is Up. The last two columns correspond to the condition number of the singular value spectrum (cond) and the correlation coefficient between observed and predicted waveforms (c12), respectively.
Table E3 [ASCII Text File; 12 KB]. Eigenvalues (s1, s2, s3) and eigenvectors (e1, e2, e3) for the moment tensor solutions listed in Table E2. Note the eigenvalues have been sorted so that s1 < s2 < s3.
Table E4 [ASCII Text File; 8 KB]. Isotropic (mI), deviatoric (mD), and total (mT) scalar moments, and moment magnitudes (Mw) from the moment tensor solutions listed in Table E2.
Table E5 [ASCII Text File; 4 KB]. Volume closure (-DV), total shear-slip (AD), and volumetric to shear-slip ratio (-DV/AD) for the moment tensor solutions listed in Table E2.