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Volcanic activity worldwide 26 Jan 2016: Popocatépetl volcano, Bromo, Planchón-Peteroa, Nishino-sh...

mardi janv. 26, 2016 21:00 |

Nishimashima island seen from the air on 19 Jan 2016 (Japan Coast Guard)
Nishimashima island seen from the air on 19 Jan 2016 (Japan Coast Guard)
View of the active lava pond inside Kilauea's Pu'u 'O'o on 22 Jan (HVO)
View of the active lava pond inside Kilauea's Pu'u 'O'o on 22 Jan (HVO)
Explosion from Popocatépetl last night (CENAPRED)
Explosion from Popocatépetl last night (CENAPRED)
Nishino-shima (Volcano Islands, Japan): An aerial survey on 19 Jan showed that no activity occurred recently. The eruption can now be regarded as over.

Bromo (East Java, Indonesia): According to a local news article referring to information from the volcano observatory, the volcano's eruption started to eject visibly incandescent lava bombs this morning.
In more technical words, this suggests that by now the eruption entered a so-called magmatic phase where fresh lava arrives at the surface (as opposed to ash emissions from mostly pulverized older rocks, which might have been the activity so far). The head of the Center for Volcanology and Geological Disaster Mitigation, Edi Prasojo, said that" Bromo has entered an eruption phase", the article mentions.
On a side note, incandescent ejected rocks alone, however, do not necessarily (although often) mean that they are from fresh magma. In some cases, they can also be older, very hot rocks from the conduit ejected by phreatic activity). An analysis of a sample or the ash would tell the difference.

Kilauea (Hawai'i): No significant changes have occurred in the ongoing eruption both at the volcano's summit and on its eastern rift zone. Degassing, seismicity and deformation are at normal levels.
Summit lava lake: The lava lake in Halema'uma'u continues to be active, fluctuating in level around 35 m below the crater rim.
... [read more]

Popocatépetl (Central Mexico): No significant changes have occurred during the past weeks at the volcano. Magma is slowly rising and growing a flat dome in the inner summit crater. Trapped, pressurized gasses cause small to moderate explosions with more or less intense ash emissions from time to time, typically a few per day.
Unfavorable wind conditions drifted ash plumes over Puebla's airport yesterday, prompting its temporary closure between yesterday afternoon and this morning.
... [read more]

Planchón-Peteroa (Central Chile and Argentina): An increase in seismic activity started on 15 Jan 2016 triggered a raise of the volcano's official alert status to "yellow" on 22 Jan.
Chile's Sernageomin reported that during January, 289 seismic events mostly of long-period type, related to fluid movements inside the volcano, had been registered.
Actualités précédentes
vendredi, janv. 22, 2016
Zhupanovsky (Kamchatka, Russia): KVERT reported an explosion occurred on 19 January at 16:36 (local time) and generated an ash plume that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted 20 km east. ... [details]
Small pyroclastic flow at Fuego volcano this morning
mercredi, janv. 20, 2016
Fuego (Guatemala): Another phase of increased explosive activity and lava effusion is taking place at the volcano. Small pyroclastic flows were observed this morning. ... [details]
Erta Ale lava lake overflowing (archive image from Dec 2010)
lundi, janv. 18, 2016
Egon (Flores): An eruption warning remains in place. Increased sulfur smells have been noted from the volcano which had been raised to second highest alert on 13 Jan. ... [details]
Ash plume from Sinabung today (image: Sadrah Peranginangin / facebook)
dimanche, janv. 17, 2016
Sinabung (Sumatra, Indonesia): (16 Jan) A moderately strong explosion occurred earlier today from the volcano, producing an ash plume that rose approx. 2 km. ... [details]

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