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Immagini casuali
Shiveluch volcano satellite image by (c) Google
Shiveluch volcano satellite image by (c) Google
Shiveluch vulcano
Stratovolcano 3283 m (10,771 ft)
Kamchatka, 56.65°N / 161.36°E
Stato attuale: eruzione (4 di 5)
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Eruzioni del vulcano Shiveluch:
1739(?), 1800(?), 1854 (Plinian eruption), 1879-83, 1897-98, 1905, 1928-29, 1930, 1944-50, 1964 (sub-Plinian, large dome collapse and debris flow), 1980-81, 1984, 1985, 1986-88, 1988, 1989 1990-94, 1997, 1998, 1999, 1999-ongoing
Stile eruttivo tipico:
Highly explosive. Construction of lava domes and large pyroclastic flows caused by dome collapse. One of Kamchatka's largest and most active volcanoes.
Ultimi terremoti nelle vicinanze
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Shiveluch volcano news and updates

Shiveluch volcano (Kamchatka, Russia): no major eruption on 25 Aug, ash plume only to 23,000 and not 70,000 ft

Tuesday Aug 27, 2019 22:23 PM | AUTORE: T

The recently reported eruption on 25 Aug alerting of an ash plume as high as 70,000 ft (21300 m) did not take place.
There is no data (satellite-based, direct observations etc) to confirm an eruption of this magnitude.
The report was based on an erroneous alert from the Anchorage VAAC. An eruption did take place, observed by a group of people staying nearby and who sent us images on social media, but it was "only" producing an ash column rising approx. 23,000 ft (7 km) - something not unusual for Shiveluch which has been having eruptions of this size for decades at irregular intervals.

However, it should be mentioned that eruptions of larger size (with ash plumes of 70,000 ft or more) are entirely possible, have occurred and will occur again sooner or later. In case of doubt, VAAC centers need to assume the "worst-case scenario" as a measure of safety.
News precedente
Satellite image of Shiveluch volcano on 26 Aug 2019
Monday, Aug 26, 2019
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ... [leggi]
Sunday, Aug 25, 2019
The original report of ash to 70,000 ft altitude was dismissed later on; the eruption "only" REACHED APPROX. 23,000 FT altitude. ... [leggi]
Sunday, Aug 25, 2019
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 and is moving at 15 kts in N direction. ... [leggi]
Satellite image of Shiveluch volcano on 25 Aug 2019
Sunday, Aug 25, 2019
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 and is moving at 15 kts in N direction. ... [leggi]
Satellite image of Shiveluch volcano on 24 Aug 2019
Saturday, Aug 24, 2019
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 and is moving at 10 kts in NW direction. ... [leggi]

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