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Suwanosejima volcano (Ryukyu Islands, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 25 November-1 December 2020 (Continuing Activity)

mer., 25 nov. 2020, 06:00
06:00 AM | AUTEUR : VN
JMA reported nighttime incandescence and intermittent eruptive activity at Suwanosejima's Ontake Crater during 20-27 November. A total of 34 explosions were recorded, ejecting bombs up to 700 m away from the crater and producing gray-and-white plumes that rose 1.4 km above the crater rim. The Tokyo VAAC noted that ash plumes drifted S and SE.
Ashfall was reported in Toshima village (4 km SSW). Crater incandescence was visible from the morning of 20 November through 22 November. The Alert Level remained at 2 (on a 5-level scale).

Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)
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From: Global Volcanism Program, 2020. Report on Suwanosejima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 25 November-1 December 2020. Smithsonian Institution and US Geological Survey.

Actualités précédentes

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stratovolcan 799 m/ 2,621 ft
Îles Ryūkyū (Japon), 29.64°N / 129.72°E
Condition actuelle: en éruption (4 sur 5) Eruptions du volcan Suwanose-jima:
2004 (Oct) - ongoing: intermittent strombolian-type activity
Since 1949: essentially continuous activity
2000 (Dec) - Jul 2004 (Jul): strombolian activity, 1999 (Jan-Feb, June), 1996 (Dec) - 1997 (Apr), 1949-96, 1940, 1938, 1934 (?), 1925, 1921-22, 1915 (?), 1914 (?), 1889, 1885, 1884, 1877, 1813-14 (sub-plinian Bunka eruption), around 1600 AD (large explosive eruption)
Style éruptif tipique
explosive, strombolian
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