Observations of Deformation

Volcano number:261170
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:06/2006-06/2009
Inferred cause(s) of deformation:Magmatic
Characteristics of deformation:

Kerinci was covered by Chaussard & Amelung’s survey of west Sunda volcanoes, using ALOS InSAR data. This study covered a surface area of approximately 400,000km2 between mid-2006 and mid-2009. At Kerinci, the researchers noted significant uplift, with an average rate of 7.7 cm/yr, though this increased in a roughly linear trend during the study period. The uplift was typically centred around the summit of the edifice. The rate of uplift reached a maximum of 10 cm/yr between 2008 and 2009, shortly preceding a series of small eruptions at the volcano, which led the authors to draw a connection between the two events. Chaussard & Amelung suggest a shallow magmatic source to be responsible for the deformation, which their models estimate to be at a depth of 0.7 km below sea level (4.1 km below the summit).

Reference(s):Chaussard, E. and Amelung, F. 2012. Precursory inflation of shallow magma reservoirs at west Sunda volcanoes detected by InSAR. Geophysical Research Letters, 39 (12)
Location:-1.697, 101.264
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