Modulation of Popocatépetl’s activity by regional and worldwide earthquakes

Abstract Volcanoes switching from quiescence to eruption shortly after catastrophic earthquakes have raised interest for volcanic triggering and the influence of on activity. Its already active systems especially at open-vent volcanoes is more difficult apprehend. A number recent observations suggest an tectonic Popocatépetl’s activity, importance which remains unknown. To further investigate this, we introduce index, based near-field concept, identifying with highest potential promote activity (hereafter termed “significant earthquakes”). The time series significant compared intensity as characterized by energy volcano-tectonic earthquakes, dome extrusions, thermal degassing fluxes, ash production. Three main periods contrasting stand out showing that Popocatépetl presents intense when are frequent. Enhanced extrusion apparently follows quickly pulses peak 1.3 ± 0.3 years. Conversely, extrusive vanishes seismicity disappears, during period 2003–2011, coincides a 12-year-long gap. Hence, propose 1994–2022 in part modulated repetitive occurrence periodically