Characterization of seismic events during the 2009 eruption of Redoubt Volcano, Alaska

► Seismic events detected and characterized during 2009 eruption of Redoubt Volcano. ► 126,789 events detected with eight swarms exceeding 100 events per hour. ► Events had wide range of amplitude and spectral content. ► 146 event families detected throughout the eruption. ► Of 19 explosions, 7 were preceded by one or more event families.