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Diaporama
Glow from the crater of Suwanose-jima volcano in Japan (image: JMA webcam)
Saturday, Mar 09, 2019
Bright glow can be seen from the crater area during night time, indicating that it is currently erupting. Most likely, this activity consists of intermittent, mild strombolian explosions from the Ontake crater. ... [details]
Satellite image of Suwanose-jima volcano on  3 Jan 2019
Thursday, Jan 03, 2019
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
 

Suwanose-jima volcan

stratovolcan 799 m/ 2,621 ft
Îles Ryūkyū, Japon, 29.64°N / 129.72°E
Condition actuelle: en vigilance - niveau agité (2 sur 5)
Suwanose-jima webcams / données en temps réel | Reports
Suwanose-jima volcano videos
Suwanose-jima livres
Last update: 9 Mar 2019 (crater glow, probably stormbolian explosions from Ontake crater)
Style éruptif tipique: explosive, strombolian
Eruptions du volcan Suwanose-jima: 2004 (Oct) - 2011 (ongoing) strombolian-type activity
Since 1949: essentially continuous activity
1999 (Jan-Feb, June), 2000 (Dec) - Jul 2004 (Jul): strombolian activity
1996 (Dec) - 1997 (Apr), 1949-96, 1940, 1938, 1934 (?), 1925, 1921-22, 1915 (?), 1914 (?), 1889, 1885, 1884, 1877, 1813, around 1600 AD (large explosive eruption)No recent earthquakes
HeureMag. / DepthDistanceLocation
Suwanose-jima (諏訪之瀬島) volcano is Japan's and one of the world's most active volcanoes. It has been in a state of near-continuous strombolian-type eruption since 1949.
The volcano forms the 8 km long spindle-shaped island of the same name in northern Ryuku Islands, Japan. The remote island is home to about 50 residents only.
Suwanose-jima consists of an andesitic stratovolcano with 2 historically active summit craters. Intermittent to continuous strombolian activity began from On-take (Otake), the NE summit crater, in 1949 and has been going on since. After 1996, occasional periods of inactivity have become more frequent.

Introduction:

The summit of Suwanose-jima volcano is truncated by a large breached crater extending to the sea on the east flank that was formed by edifice collapse.

The largest historical eruption took place in 1813-14, when thick scoria deposits blanketed residential areas, and the SW crater produced 2 lava flows that reached the western coast. At the end of the eruption the summit of On-take collapsed forming a large debris avalanche and creating the horseshoe-shaped Sakuchi caldera, which extends to the eastern coast. The island remained uninhabited for about 70 years after the 1813-1814 eruption. Lava flows reached the eastern coast of the island in 1884.
(Source: Smithsonian / GVP information)

1979-80 activity
A typical 2 year log of activity from Smithsonian's Monthy reports is presented here, illustrating the pulsating, but essentially persistant strombolian activity observed at Suwanose-jima volcano ...plus

Derniers images satellite

 

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