Surface deformation monitoring of Mt. Agung by Sentinel-1 DInSAR

Phreatic eruption occurred on November 21, 2017 on Mount Agung with the ash cloud reaching the height more than 3,800 meters. This was followed by multiple magmatic eruptions occurred since November 25 to 27. Volcanic activity has been weakened after November 29, but it is still continuing.

In this study, recent status of the surface deformation of Mt. Agung, detected by DInSAR using Sentinel-1 satellite data, is reported. Preliminary results indicate that no deformation occurs before the phreatic eruption, but after the eruption a swell on northern slope may occur.