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Diaporama
mardi, mai 15, 2018
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
Satellite image of Suwanose-jima volcano on  4 May 2018
vendredi, mai 04, 2018
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: Activité petite ou avertissement éruption imminente (3 sur 5)
Suwanose-jima webcams / données en temps réel | Reports
Suwanose-jima volcano videos
Suwanose-jima livres
Last update: 15 mai 2018
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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