4 eruptive events. Maximum summit subsidence and uplift are ∼10 cm and ∼8 cm, respectively.Through inverse modeling of both periods, a deflating and inflating magma body can be inferred, located at a depth of 4 – 12 km, subject to a volume decrease of 10 – 46 × 10⁶ m³ during the subsidence period, followed by a volume increase of 6 – 20 × 10⁶ m³ during the uplift period. Reference 1.
Delgado et al., 2017, Estimated  At Llaima,  that the VEI 2 April 3, 2009 eruption was preceded by ~ 6–15 cm of precursory ground uplift one month before from a source ~ 5 km below the surface on the western side of the edifice. Reference 2.
InSAR shows temporally complex deformation of uplift and subsidence up to 11 cm on the eastern flank (Figure 6). The reason for the deformation is unknown, but appears to begin in December 2007 and be related to the January/February 2008 eruption. Reference 3.