One of the objectives of this event Supersite is to obtain ground
deformation from InSAR data. We have gathered some Radarsat-2 which can be seen
with the UNAVCO SAR search GUI, just select "Supersites R22 Sinabung" under "Collections".
Data from Cosmo-Skymed is available for research to scientists who sign
the Sinabung supersites license agreement. Access to the Radarsat-2
imagery requires registration with CSA via the PI. Please contact the
PI, Falk Amelung, for more details.
The volcano is known to exhibit
precursory inflation. Prior to the the current eruptive period which
started in 2010 ALOS InSAR detected about 2.1 cm/yr uplift (Chaussard et
al., 2013), suggesting that ground deformation could provide warning
for new eruptive periods. The volcano also subsided associated with the
2010 eruption. Ground deformation has been explained by a shallow source
at ~1 km depth (Chaussard and Amelung, 2012).
Averaged radar line-of-sight velocity map of the west Sunda arc,
Indonesia, from ALOS InSAR showing the inflation-deflation pattern at
Sinabung and at other Indonesian volcanoes (from Chaussard et al.,
Chaussard, E., Amelung, F., & Aoki, Y. (2013). Characterization of open
and closed volcanic systems in Indonesia and Mexico using InSAR
timeseries. Journal of Geophysical Research: Solid Earth, DOI:
Chaussard, E. and F. Amelung (2012), Precursory inflation of shallow
magma reservoirs at west Sunda volcanoes detected by InSAR, Geophys.
Res. Lett., doi:10.1029/2012GL053817.