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Abstract:
Popocatépetl, located in central Mexico, is currently the country's most active volcano, and poses a significant volcanic risk to densely populated areas nearby. Since 1994, it has been in a state of frequent activity, exhibiting regular small to moderate-sized explosions, gas and ash emissions and intermittent lava dome growth. Popocatépetl volcano is closely monitored by the National Center for Disaster Prevention (CENAPRED) in Mexico. Last year, in a collaborative effort with the University of Colima, a fixed-mounted thermal camera was installed at the north of the volcano to provide continuous infrared monitoring of its recent activity. We present the results of the thermal analysis applied to the recent explosions, as well as the time-frequency seismic evolution of the volcanic activity. For the seismic analysis we focused on the search of temporal changes within the spectral content of the volcanic seismic signals, employing diverse time-frequency representations applied to the SSAM, frequency index, dominant frequency, spectral centroid and discrete wavelet decomposition at different scales. We emphasize the importance of incorporating advanced monitoring techniques to better track the dynamics of the volcanic processes.
