The Jakarta Post
Since it was declared under alert status on Sept. 23, 2010, Mount Merapi has continued to show increasing volcanic activity.
According to head of the Volcanic Technology Development and Research Center (BPPTK) Yogyakarta, Subandrio, Merapi, which borders Yogyakarta and Central Java provinces, it has been changing form as a result of pressure from its magma fluid, which is seeking a way out.
“The deforming is speeding up. It swells every day,” Subandrio said.
He added that compared to the deformation the volcano experienced ahead of the latest 2006 eruptions, which claimed two lives, the deformation this time was more rapid as shown on the four reflectors installed at its peak.
The BPPTK has installed a total of 16 reflectors at the peak of Mt. Merapi, one of the most active volcanoes in the world, to help monitor its volcanic activities.