Estudio de las señales sísmicas de muy largo período del volcán Cotopaxi

Abstract

This work identifies 33 seismic events with very long period content that occurred at Cotopaxi volcano between June 1, 2010 and October 31, 2014. The existence of a single family, containing 17 of the 33 VLP events, was recognized by performing cross-correlations between them. The remaining 16 events could not be grouped into families due to the small signal amplitudes, having been considerably influenced by microseismicity. The source was located using P wave polarization analysis, specifically the particle motion method. Finally the possible source mechanism was identified through the comparison and cross correlation with those studied in previous works at Cotopaxi volcano.