Batu Tara volcano 30 June - 4 July 2015: eruptions

During our Batu Tara volcano expedition we stayed on the island from 30 June - 4 July 2015 and found the volcano in similar activity (strombolian) as during our other visits in Nov 2012 and 2014. However, during the night 2-3 July and early on 3 July, a phase of increased activity resulted in the formation of small pyroclastic flows caused by collapsing material ejected during the explosion and/or accumulated on the crater rim.
See also: Expedition, camp & volcano | Video clips of eruptions

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A typical small eruption at Batu Tara. (Photo: Tom Pfeiffer) [info]
(366 visti)

In the evening, the glowing bombs become visible. (Photo: Tom Pfeiffer) [info]
(367 visti)

Strombolian eruption in moonlight. (Photo: Tom Pfeiffer) [info]
(485 visti)

A stronger eruption sends many bombs against and over the vertical eastern crater wall. (Photo: Tom Pfeiffer)

A stronger eruption sends many bombs against and over the vertical eastern crater wall. (Photo: Tom ... [info]
(1935 visti)

Small strombolian explosion in moonlight. (Photo: Tom Pfeiffer) [info]
(482 visti)

Strong strombolian eruption with many ejections to the western side. (Photo: Tom Pfeiffer) [info]
(920 visti)

Moderate explosion and ash plume rising a few hundred meters. (Photo: Tom Pfeiffer) [info]
(487 visti)

The wind carries the ash plume from an eruption over to the west. (Photo: Tom Pfeiffer) [info]
(415 visti)

Rising ash plume drifting over the western crater wall. (Photo: Tom Pfeiffer) [info]
(338 visti)

Powerful eruption and curtains of falling scoria and bombs. (Photo: Tom Pfeiffer) [info]
(454 visti)

Rockfalls on the sciara of Batu Tara. (Photo: Tom Pfeiffer) [info]
(334 visti)

Strong eruption in twilight. (Photo: Tom Pfeiffer) [info]
(374 visti)

Strong eruption at night (Batu Tara volcano, Indonesia) (Photo: Tom Pfeiffer) [info]
(620 visti)

Small strombolian activity. (Photo: Tom Pfeiffer) [info]
(375 visti)

Red glow reflected in cloud hovering over the crater. (Photo: Tom Pfeiffer) [info]
(466 visti)

On the evening of 2 July, a strong eruption, particularly rich in ejecta occurs and causes a pyroclastic flow (next images). (Photo: Tom Pfeiffer)

On the evening of 2 July, a strong eruption, particularly rich in ejecta occurs and causes a pyrocla... [info]
(329 visti)

Pyroclastic flow traveling down the sciara and approx. 50 m over water. The flow took approx. 30 seconds to reach the sea, i.e. travelled at approx. 30 m/s. (Photo: Tom Pfeiffer)

Pyroclastic flow traveling down the sciara and approx. 50 m over water. The flow took approx. 30 sec... [info]
(482 visti)

Rising ash plume from the stagnating flow front. (Photo: Tom Pfeiffer) [info]
(319 visti)

Wide-angle view of a normal-sized eruption. (Photo: Tom Pfeiffer) [info]
(329 visti)

Powerful eruption with incandescent rock falls traveling down the sciara. (Photo: Tom Pfeiffer) [info]
(423 visti)

Glowing rock falls on the sciara of Batu Tara. (Photo: Tom Pfeiffer) [info]
(390 visti)

On the morning of 3 July, another strong explosion causes a small pyroclastic flow. (Photo: Tom Pfeiffer)

On the morning of 3 July, another strong explosion causes a small pyroclastic flow. (Photo: Tom Pfei... [info]
(323 visti)

Small pyroclastic flow traveling down the sciara at 20-30 m/s speed. (Photo: Tom Pfeiffer) [info]
(262 visti)

View of the sciara where a pyroclastic flow has descended. (Photo: Tom Pfeiffer) [info]
(266 visti)

Strong eruption. (Photo: Tom Pfeiffer) [info]
(237 visti)

Rock falls on the sciara. (Photo: Tom Pfeiffer) [info]
(257 visti)

Dust on the sciara from rockfalls reaching the shore. (Photo: Tom Pfeiffer) [info]
(235 visti)

Close-up of an explosion. (Photo: Tom Pfeiffer) [info]
(247 visti)

A large lava bomb is ejected during this eruption. (Photo: Tom Pfeiffer) [info]
(238 visti)

Another strong eruption at night, throwing out a meter-sized bomb (thick trail leaving the vent to the right side). (Photo: Tom Pfeiffer)

Another strong eruption at night, throwing out a meter-sized bomb (thick trail leaving the vent to t... [info]
(332 visti)

Rockfalls on the sciara at night. (Photo: Tom Pfeiffer) [info]
(266 visti)

View of an eruption from the beach at low tide. (Photo: Tom Pfeiffer) [info]
(254 visti)

Glow from this eruption reflects on the sea. (Photo: Tom Pfeiffer) [info]
(290 visti)

Trails of glowing rockfalls from the eruption in the previous picture. (Photo: Tom Pfeiffer) [info]
(251 visti)

The sciara is black after a morning rain. (Photo: Tom Pfeiffer) [info]
(213 visti)

Good-by eruption on the morning of 4 July, before leaving Komba Island. (Photo: Tom Pfeiffer) [info]
(213 visti)

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Batu Tara volcano 30 June - 4 July 2015: eruptions

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