“Instrumentally we have never recorded such high energy or seismicity from Mount Agung,” Devy Kamil Syahbana, a seismologist from Indonesia’s centre for volcanology and geological hazard mitigation, told the Guardian.
Data showed that Mount Agung experienced 844 volcanic earthquakes on Monday, and 300 to 400 earthquakes by midday on Tuesday, he said. “We need to pay attention because these kinds of earthquakes indicate the movement of magma and increase the probability of an eruption.”