Sumbing

Volcano number:263220
Region:Indonesia
Country:Java
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:01/2007-12/2008
Inferred cause of deformation:Surface deposits, Uncertain
Characteristics of deformation:

Sumbing was one of several volcanoes covered by Philibosian & Simon’s 2007-2008 interferometric SAR study of the island of Java. A time series of the collected deformation data reveals a fluctuating trend of displacement, between +5 and -10cm from the edifice’s original position in January 2007. The net result is slight subsidence, totalling less than 5cm. As the volcano has not been magmatically active 1730, it is unlikely that the deflation is magmatic in origin; the small and unsteady signal makes it more likely that the subsidence is a result of natural erosion.

Reference:Philibosian, B. and Simons, M. 2011. A survey of volcanic deformation on Java using ALOS PALSAR interferometric time series. Geochemistry, Geophysics, Geosystems, 12 (11). DOI: 10.1029/2011GC003775
Location:110.07, -7.384

Photo by Lee Siebert, 1995 (Smithsonian Institution)

Deformation time series of Sumbing volcano, from 01/07 to 01/09. From Philibosian & Simons, 2011