Mayon

Volcano number:273030
Region:Philippines and SE Asia
Country:Philippines
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR, GPS - campaign
Duration of observation:1992-1996 (GPS campaigns), 2007-2011 (InSAR)
Inferred cause of deformation:Surface deposits
Characteristics of deformation:

ALOS InSAR time series survey (2007-2011) reveals subsidence at a rate of 3.5 cm/yr over lava flows emplaced during 2006 on the SE flank (Morales et al., 2015).

No significant surface deformation was observed within the accuracy of the campaign GPS measurements (Vajda et al., 2012).

Reference:Morales Rivera, A.M., Amelung, F., Eco, R. (2015). Volcano deformation and modeling on active volcanoes in the Philippines from ALOS InSAR time series. Proceedings of the Fringe 2015 Workshop, ESA SP-731 (CD-ROM), ESA Publications Division, European Space Agency
Reference:Peter Vajda, Ilya Prutkin, Robert Tenzer, Gerhard Jentzsch (2012). Inversion of temporal gravity changes by the method of local corrections: A case study from Mayon volcano, Philippines. Journal of Volcanology and Geothermal Research, Volumes 241–242, Pages 13-20, ISSN 0377-0273, http://dx.doi.org/10.1016/j.jvolgeores.2012.06.020.
Location:123.685, 13.257

Average LOS velocity for 2007-2011 (top) with reference pixel at 13.406210°N, 123.605000°E; LOS displacement time series (bottom), for the corresponding points shown on the velocity map, with the best fitting linear regression for the deforming point (Morales et al., 2015).