The influence of big earthquakes on volcanism in Chile since 1900, including the recent M=8.8 offshore Maule event

In history records, chilean volcanoes have shown an interesting spacio-temporal relation with the great regional earthquakes. In this work we analized the influence of them in those volcanoes by taking into consideration the static stress changes due to seismic displacement and the increase in the magma chamber pressure due to rectified diffussion and advective overpressure. We found that, historically, earthquakes could have promoted no more than 5 eruptions in a period of a year after it ocurred. In addition, we made an estimation of the influence of the M=8.8 offshore Maule event on the chilean volcanoes, and we found that the ones that were affected the most by the seismic movement were Quizapu, Peteroa, Nevados de Chillan, Llaima, and Villarrica.