Figure 2
From: Causes of volcanic unrest at Mt. Spurr in 2004–2005 inferred from repeated tomography

Histogram of the seismic events beneath Mt. Spurr from 1990 to 2012. The red line highlights the three time periods considered in this study.
From: Causes of volcanic unrest at Mt. Spurr in 2004–2005 inferred from repeated tomography

Histogram of the seismic events beneath Mt. Spurr from 1990 to 2012. The red line highlights the three time periods considered in this study.