The complete bouguer anomaly changes in 2019 after explosive eruption of Merapi in 2010

Merapi is the most active volcano in Central Java and even in Indonesia. Previous research in 1988,1998,2011 by using the gravity method shows an increasing amount of magmas, which are observed from changes in the dimensions of the magma chamber. The aim of this research is to observed the gravity changes nearby summit area after big eruption in 2010. In this research the summit area was close because of the activity of Merapi. The results of further studies in 2019 showed a large anomaly increase of 2 to 5 mGal in the southeast to the southwest. Gravity data in the peak area has not yet been acquired due to the high activity of Merapi. The subsurface interpretation related to changes in the dimensions of the magma reservoir cannot be done, but it can be expected increasing of mass at the southeast of Merapi towards the peak. The increasing amount of mass cause Merapi eruption in 2020. (paper)