Fig. 1: Comparison of epicentral location maps.

a Catalog of the National Geographic Institute of Spain (IGN), b relocation based on cross-correlations², c absolute locations using a 3D model⁵, and d subset of 13 events⁸ referred to such catalog⁵ but with discrepant locations. Epicenters are plotted for a common dataset of 49 earthquakes with magnitudes larger than 2, out of the 51 for which a waveform-based classification was performed², except in (d), where we only plot the 13 available events in such dataset. Colored epicenters correspond to different families of earthquakes with high waveform similarity, which should be tightly located. Uncertainties are reported for the clustered events in (b) (as latitude and longitude bars) and (c) (ellipses). A black square marks the location of the Castor platform.