Sinabung Volcano Photos July 2015: Lava Dome and Pyroclastic Flows

Sinabung volcano photos July 2015: lava dome and pyroclastic flows

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A meteor passes above Sinabung volcano with its two active lava lobes. (Photo: Tom Pfeiffer) [info]
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The eastern lobe (r) frequently generates glowing rockfalls. (Photo: Tom Pfeiffer) [info]
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Rockfall at dawn. (Photo: Tom Pfeiffer) [info]
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The large lava flow in the front was emplaced in early 2014. (Photo: Tom Pfeiffer) [info]
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A larger rockfall from the eastern lobe generates a lot of dust. (Photo: Tom Pfeiffer) [info]
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Glow from the two active lava lobes early on 27 July. (Photo: Tom Pfeiffer) [info]
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A small explosion occurs from the lava dome in the morning of 27 July. (Photo: Tom Pfeiffer) [info]
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Zoom onto the active lava dome. (Photo: Tom Pfeiffer) [info]
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Around noon on 27 July, rockfalls from the eastern lobe increase. (Photo: Tom Pfeiffer) [info]
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Depending on how much of the steep front of the eastern lobe collapses at once, the next pyroclastic flow could be big. (Photo: Tom Pfeiffer)

Depending on how much of the steep front of the eastern lobe collapses at once, the next pyroclastic... [info]
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After 3 days with no pyroclastic flows, a first one occurs at noon on 27 July. (Photo: Tom Pfeiffer) [info]
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Within less than a minute, the flow has reached the base of the volcano's main cone. (Photo: Tom Pfeiffer)

Within less than a minute, the flow has reached the base of the volcano's main cone. (Photo: Tom Pfe... [info]
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The pyroclastic flow continues at high velocity, widens in the flatter area and forms several advancing tongues. (Photo: Tom Pfeiffer)

The pyroclastic flow continues at high velocity, widens in the flatter area and forms several advanc... [info]
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The flow has reached the area of the (already mostly destroyed) village of Bekerah. (Photo: Tom Pfeiffer)

The flow has reached the area of the (already mostly destroyed) village of Bekerah. (Photo: Tom Pfei... [info]
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As the flow starts to slow down, the fine ash lifts to form a so-called co-ignimbrite ash plume. (Photo: Tom Pfeiffer)

As the flow starts to slow down, the fine ash lifts to form a so-called co-ignimbrite ash plume. (Ph... [info]
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Ash plume from the pyroclastic flow rising and penetrating a cumulus cloud. (Photo: Tom Pfeiffer) [info]
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Small fingers of hot fluidized material continue to advance at the flow front. (Photo: Tom Pfeiffer) [info]
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The co-ignimbrite ash plume from a pyroclastic flow at Sinabung volcano rises more than 2 kilometers and starts to spread (July 2015). (Photo: Tom Pfeiffer)

The co-ignimbrite ash plume from a pyroclastic flow at Sinabung volcano rises more than 2 kilometers... [info]
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The dissipating ash plume spreads over the whole eastern and southern sectors, where ash fall sets in (incl. at our location, forcing us to withdraw). (Photo: Tom Pfeiffer)

The dissipating ash plume spreads over the whole eastern and southern sectors, where ash fall sets i... [info]
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Several other flows occur the next day, but were smaller in size. (Photo: Tom Pfeiffer) [info]
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Hot pyroclastic deposits create strong convection currents that generate small "tornados", or rather dust-devils. (Photo: Tom Pfeiffer)

Hot pyroclastic deposits create strong convection currents that generate small "tornados", or rather... [info]
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View of the volcano with a small pyroclastic flow reaching 2 km length. (Photo: Tom Pfeiffer) [info]
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Ash plume rising from the pyroclastic flow. (Photo: Tom Pfeiffer) [info]
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Another flow on 28 July morning races down the steep flank, hits and surpasses the walls of a small canyon. (Photo: Tom Pfeiffer)

Another flow on 28 July morning races down the steep flank, hits and surpasses the walls of a small ... [info]
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The advancing front of "boiling" ash. (Photo: Tom Pfeiffer) [info]
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As the flow front stagnates, the fine ash starts to separate and rise as ash plume. (Photo: Tom Pfeiffer)

As the flow front stagnates, the fine ash starts to separate and rise as ash plume. (Photo: Tom Pfei... [info]
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Zoom onto the margins of the pyroclastic flow front. (Photo: Tom Pfeiffer) [info]
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Ash plume rising from the pyroclastic flow. (Photo: Tom Pfeiffer) [info]
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Wide-angle view of the pyroclastic flow on the volcano's eastern side. (Photo: Tom Pfeiffer) [info]
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Zoom onto the lava dome with the eastern lava lobe, which has significantly lost mass, especially from the left side, now exposing a steep vertical cut (see also last image with comparison). (Photo: Tom Pfeiffer)

Zoom onto the lava dome with the eastern lava lobe, which has significantly lost mass, especially fr... [info]
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Hot dust devils rise like tornados from the fresh and still hot pyroclastic deposits. (Photo: Tom Pfeiffer)

Hot dust devils rise like tornados from the fresh and still hot pyroclastic deposits. (Photo: Tom Pf... [info]
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Comparison (same view) of the lava dome from 25 and 28 July. The eastern lobe (to the right) has lost some of its material, especially on the left side, during the recent pyroclastic flows. (Photo: Tom Pfeiffer)

Comparison (same view) of the lava dome from 25 and 28 July. The eastern lobe (to the right) has los... [info]
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Sinabung volcano photos July 2015: lava dome and pyroclastic flows

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