The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
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Ash emission from Bromo yesterday (image: PVMBG / Instagram)
Eruption of Popocatépetl last evening
Eruption of Turrialba yesterday
Seismic trace of SAGA seismic station at Sangay volcano (IGEPN)
Lava laka in Villarrica volcano as seen on 3 April (source: Lago Villarrica / facebook)
Sakurajima (Kyushu, Japan): During the past days, the volcano has been in a very active state again, producing multiple and relatively strong vulcanian explosions that showered the upper crater area with incandescent bombs and generated ash plumes that rose up to 15,000 ft (4.5 km) altitude. It seems that along with the recent increase in explosions, most activity has again returned to the Showa crater.
Bromo (East Java, Indonesia): New ash emissions resumed at the volcano again since yesterday. A plume of steam and moderate ash content been rising a few hundred meters and drifting approx. 40 km into westerly directions over East Java. No additional details about the activity from the volcano observatory are currently available.
Popocatépetl (Central Mexico): The volcano had a relatively strong explosion yesterday evening at 20:31 local time. It produced a 2 km ash column and ejected incandescent fragments that landed in to up to 3.5 km distance on the eastern and southeastern flanks, igniting some bush fires on the upper slopes of the volcano. An overflight on Saturday with the help of a Federal Police helicopter showed that yet another cycle of dome growth and destruction has recently completed at El Popo (and a new one is about to begin): during their survey, CENAPRED scientists observed that the most recent lava dome, which had been growing since January and lately contained up to approx. 2 million cubic meters of lava, was missing, obviously destroyed by the volcano's recent series of explosions. In its place, a new inner crater approx. 50 m deep and 325 m in diameter was seen. Likely, the near future will see another dome growing inside it.
Turrialba (Costa Rica): A small, probably phreatic eruption occurred at the volcano's crater yesterday morning at 09:00 local time. The explosion, which lasted 30 seconds, produced a small dense ash plume that quickly dissipated. Link: Video of the eruption (OVSICORI-UNA / facebook)
Sangay (Ecuador): The most recent (so far mild) summit eruption of the volcano continues. A steam and ash plume rising several 100 m above the crater and extending approx. 10 km west from the summit was reported this morning by VAAC Washington and can also be found on the occasional social media picture. No close-by observations are currently available (Sangay is one of the most remote and difficult-to-access active volcanoes in South America). Seismic data show rhythmic small bursts likely from strombolian explosions in the summit crater, whereas satellite-based spectrometers detected the presence of a strong heat source at the crater, possibly from a lava flow, since 22 March. As Culture Volcan observed, the intense heat radiation thus appeared several weeks AFTER the first known onset of mild explosive activity, and thus, is an indication that something changed around that date, producing significantly more heat. The easiest explanation would be the appearance of a new lava flow (or a small lava lake) inside the crater, or perhaps on the upper flank.
Villarrica (Central Chile): A small lava lake is active inside the volcano's summit crater. Vigorous degassing produces violent convection and occasional explosions that eject liquid lava spatter outside the inner pit crater. Link: Video of lava lake (Lago Villarrica / facebook) ... [read more] ... [show less] SERNAGEOM mentions that the volcano's activity had increased to moderately high levels during the past days, as the lava lake lavel had risen and ejections become visible from its lower flanks. Access has been limited to within 1 km from the summit as the activity could again quickly increase to a paroxysm (lava fountaining phase) as it had last done on 3 March 2015. The most recent activity phase began in late 2015. Seismic activity began to gradually increase until 6 February, when it jumped suddenly, triggering a raise in volcanic alert level to yellow. This was followed by the onset of weak, but continuous eruptive activity (ash emissions, small explosions) observed from the summit vents.
Etna (Sicily, Italy): (3 Apr) Activity remains low at the volcano. Only weak, intermittent ash emissions with decreasing tendency continue to occur from the NE crater. However, they carry no signs that could indicate fresh lava, and likely consist of older fragmented rock material only. ...
Stromboli (Eolian Islands, Italy): The activity at the summit craters has been (comparably very) low recently. However, small strombolian explosions continue to occur at irregular rates of 30-60 minutes intervals, mainly from western vent. ... [more]
Canlaon (Central Philippines): Two small explosions occurred at the volcano yesterday evening, at around 18:20 and 19:18 local time. An ash plume rose to approx. 1500 m above the summit and some freshly ejected incandescent bombs could be seen at the crater rim. ... [more]
Sakurajima (Kyushu, Japan): Over the past days, vulcanian-type explosions have again picked up in number and size, after only very few events during the first 3 weeks of March. Ash plumes rose to up to 10-12,000 ft (3-3.6 km) altitude. ... [more]
Suwanose-jima (Ryukyu Islands): The strombolian activity continues at the Otake crater continues. In the past days, it has been more intense, generating bright glow visible from neighboring islands and ash plumes that rose up to approx. 1 km. ...
Blue flames of burning sulfur: Ijen volcano in East Java has one of the most impressive sulfur deposits on earth. They are so hot that the sulfur often ignites - a mysterious display at night caught on camera.
Raung volcano photos: One of the largest and most active volcanoes in East Java, rarely-visited and relatively unknown Raung became (in)famous during its recent eruption in 2015 when its frequent ash plumes forced the repeated closure of Bali's airport.
Photos from volcanoes all over the world, taken during our expeditions.
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