| Volcano number: | 273083 | 
|---|---|
| Region: | Philippines and SE Asia | 
| Country: | Philippines | 
| Geodetic measurements? | Yes | 
| Deformation observation? | Yes | 
| Measurement method(s): | Tiltmeter | 
| Duration of observation: | 1991 | 
| Inferred cause of deformation: | [] | 
| Characteristics of deformation: | Tiltmeters detected 50 rad of cumulative tilt over the three days prior to the magma presumably reaching the surface and a lava dome beginning to form on June 7 1991 (Ewert et al., 1996). | 
| References: | 'Ewert, J.W., Lockhart, A.B., Marcial, S. and Ambubuyog, G., 1996. Ground deformation prior to the 1991 eruptions of Mount Pinatubo. Fire and Mud. Eruptions and lahars of Mount Pinatubo, Philippines. University of Washington Press, Seattle, pp.329-338.' | 
| Location: | 120.35, 15.13 |