TEMPO.CO, Karangasem - Mount Agung in Karangasem regency, Bali experienced strombolian eruption on Monday, July 2 at 09:04 WITA (Central Indonesian Time).
"The strombolian eruption caused the seismic amplitude to rise, but briefly, after that, it was down again," said Head of Mitigation for Volcano Monitoring of Eastern Region PVMBG, Devy Kamil Syahbana, Tuesday, July 3.
Based on the seismic amplitudes chart, it showed no increase in energy. "There is no long-term trend of building the great pressure," he said.
Devy explained, if paying attention before the eruption on Monday, July 2, at 06:00 pm, the ray of fire was not visible in the observation of CCTV (Closed-circuit television). According to him, it is one indication because of the hardening of magma.
"The flow of fluid magma (gas and liquid) that will rise to the crater is hampered by this hardened lava," he said.
According to him, the accumulation in shallow depth at some point makes the lava layer above to harden. "This is no longer able to resist the pressure of magma from below and eventually this strombolian eruption also occurred," he said.
Based on the PVMBG data, Mount Agung's lava flare reached a distance of two kilometers. The height of gray columns with thickness intensity was leaning toward the west. The seismogram recorded the eruption with a maximum amplitude of 24 millimeters. As for the duration of 7 minutes 21 seconds.
BRAM SETIAWAN
