Surface deformation of Bezymianny Volcano, Kamchatka, recorded by GPS: The eruptions from 2005 to 2010 and long-term, long-wavelength subsidence

► GPS network at Bezymianny records network wide subsidence at rapid rates between 8 and 12 mm/yr from 2005 to 2010. ► We hypothesize continuous deflation of a ~ 30 km deep sill under Kluchevskoy to cause subsidence. ► 1-2 explosive events per year cause little to no deformation at any site other than the summit site closest to the vent. ► We derive evidence for a very shallow vent, likely within the volcanic edifice. ► Most activity seems to happen at or below the detection limit of the GPS network.