Appendix A.

Location and magnitude of 81 events analyzed in this work. All this information is taken from the SSN public catalogue (http://www2.ssn.unam.mx/website/jsp/catalogo1.jsp). The time and date is UTC time. The events with magnitude M ≥ 4.5 are highlighted in bold. The * is used to show the events for which have been possible estimate the moment tensor using AMTD. The ** indicate that the global CMT solution is also available (http://www.globalcmt.org/CMTsearch.html) for this event.