Slamet Developments

 

The PVMBG volcano observatory detected an elevated seismic activity at the volcano in late September to early October.

Local earthquakes have continued to pick up in numbers, followed by an increase in seismic tremor amplitude. This may suggest heightened fluid movements of gas, water and possibly magma under the surface. Seismic recordings detected approx. 168 earthquakes per day on average.

Since July 2023, instruments have monitored a continuing inflation (30 microradians) at 1,500 meters above sea level. However, the tiltmeter station at an altitude of 2,000 meters hasn't shown any significant ground deformation so far. The EDM (Electronic Distance Measurement) data detected a slight uplift at the Cilik station and a deflation at Buncis and Jurangmangu stations.

Passive emissions of steam and gas continue to emit from the crater vent, rising 25-300 meters above the volcano.

Whether the activity will continue to increase is not clear yet, but rapid gain in inflation of the ground surface, relating to the accumulation of magma or the exolution of gas inside reservoirs or propagation of magma through intrusions or conduits, might culminate in a sudden phreatic eruption. Phreatic explosions form when the ejecta consist solely of old country rock, indicating interaction between water and heated conduit-rocks rather than magma itself.

The alert level for the volcano remains at Level 1 (Normal) since 9 October 2020.

In order to mitigate the current risk, people are advised to avoid the area of about 1 km distance from the main crater.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 3 October 2023

Also,there is a link discussing with SSAM Values informations about RSAM Values;

https://www.geonet.org.nz/about/volcano/rsamssam