Batu Tara volcano news:
Batu Tara volcano (Flores Sea, Indonesia): intense explosive activity, small pyroclastic flow & effusive eruption last night
Tuesday Nov 04, 2014 10:59 AM | BY: T
Incandescent rockfalls from the lava dome of Batu Tara this morning (photo: Galih / VolcanoDiscovery Indonesia)
The volcano continues to have frequent mild to very strong strombolian, sometimes small vulcanian-type explosions, but also intermittent, short-lived effusive phases.
Strong strombolian explosion last evening (photo: Galih / VolcanoDiscovery Indonesia)
When observed during 1-4 Nov on our current volcano expedition, explosions occurred at intervals ranging from 5-30 minutes. A small lava dome-like structure is visible at and just below the rim of the active crater. Typically, before larger eruptions, the dome started to produce small rockfalls, presumably caused by small inflation as pressure built up. Several vents were active at the crater.
Ash plumes from the explosions reached 500-1000 m height. Bombs were ejected to up to approx. 500-600 m height and traveled up to 1 km horizontal distance.
Pyroclastic flow and effusive eruption:
An intense short-lived effusive phase took place this night: at around 2 am local time, a powerful explosion was immediately followed by a short lava-rich, fountain-like explosion that initiated a large incandescent avalanche over the whole width of the sciara, causing also some parts of the upper dome to collapse. The avalanche turned into a small pyroclastic flow that reached the shore of the sciara and continued above water for approx. 100 m.
Following this event, an effusive phase began that lasted approx. 2 hours, characterized by continuous rockfalls from the glowing dome at the summit. Several hours later, the deposit from this activity at the shore was still steaming.
During the same time, some explosions occurred as well, some particular powerful ones that sent bombs into the sea and forcing us to abandon camp.
More photos / videos will be posted at a later stage.
Wednesday, Aug 27, 2014
A new ash plume extending approx. 50 km NW was reported yesterday on satellite imagery by Darwin VAAC. ... [more]
Monday, Jul 07, 2014
Explosive activity has been pronounced during the past days. Several ash plumes were spotted on satellite data, indicating relatively strong strombolian eruptions. [more]
Thursday, Jul 03, 2014
Strombolian activity continues. An ash plume from a stronger event was detected this morning on satellite imagery (VAAC Darwin). [more]
Monday, Jun 16, 2014
Activity at the volcano is relatively intense at the moment. Several ash plumes rising to 5-7,000 ft (1.5-2.1 km) altitude, originating from stronger-than-normal strombolian explosions, were seen on satellite imagery during the past days. [more]
Saturday, Jun 07, 2014
A volcanic ash plume at 7,000 ft (2.1 km) altitude was observed this morning extending 20 nautical miles to the NW. (VAAC Darwin) [more]