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30 mars - 6 avril 2019: Land of Theseus - Saronic Gulf (Greece)
2-17 mai 2019: Du Krakatau à Bali - Java (Indonésie)
4-11(12) mai 2019: Fascinant Volcan et la Légende de l'Atlantide - Île de Santorin, Grèce
4-12 mai 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
18-26 mai 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
25 mai - 1 juin 2019: Etna Discovery - Etna volcano (Italy)
7-12 juin 2019: Expédition au Volcan Yasur - Vanuatu (Mer du Sud)
15-30 juin 2019: Du Krakatau à Bali - Java (Indonésie)
8-23 juil. 2019: Du Krakatau à Bali - Java (Indonésie)
3-18 sept. 2019: Du Krakatau à Bali - Java (Indonésie)
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Diaporama
News & updates
Satellite image of Sakurajima volcano on 18 Mar 2019
lundi, mars 18, 2019
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
lundi, mars 18, 2019
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
Satellite image of Sakurajima volcano on 17 Mar 2019
dimanche, mars 17, 2019
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 and is moving at 45 kts in E direction. ... [details]
dimanche, mars 17, 2019
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
samedi, mars 16, 2019
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ... [details]
Map of volcanoes in Japan (USGS)
Map of volcanoes in Japan (USGS)
 

Volcans en Japon (118 volcans)

Japan has over 100 active volcanoes, more than almost any other country and accounts alone for about 10 % of all active volcanoes in the world. The volcanoes belong to the Pacific Ring of Fire, caused by subduction zones of the Pacific plate beneath continental and other oceanic plates along its margins.
Japan's volcanic arcs and tectonic setting
Japan is located at the junction of 4 tectonic plates - the Pacific, Philippine, Eurasian and North American plates, and its volcanoes are mainly located on 5 subduction-zone related volcanic arcs where the Pacific Plate descends under the North American Plate along the Kuril Trench and the Japan Trench and underneath the Philippine Sea Plate along the Izu-Bonin Trench. The Philippine Plate itself subducts beneath the Eurasian Plate at the western end, forming the Ryukyu Trench. The principal resulting volcanic ars are:
- Ryukyu Arc and Southwest Honshu Arcs in the south (Philippine plate subducting beneath between the Eurasian Plate),
- Izu-Bonin-Mariana Arc (subduction of Pacific plate beneath Philippine plate)
- Northeast Honshu and Kurile Arc in the north (subduction of Pacific plate beneath the N-American plate)
(more info: www.glgarcs.net/intro/subduction.html)

Besides intense volcanic activity, Japan is one of the places in the world most affected by frequent, and sometimes devastatingly large earthquakes. Its oceanic setting makes it vulnerable for tsunamis as well, as the tragedy of the 11 March 2011 8.9 earthquake and tsunami terrifyingly illustrated.

Record in historically documented eruptions
Japan's first documented historical eruption was from Aso volcano in 553 AD , the year after Buddhism was introduced from Korea. It holds a record in the number of historically documented eruptions.
Japan's largest historical eruption (Towada, 915 AD), 17 Japanese volcanoes had been documented in eruption, more than the rest of the world combined (including 10 in Europe).

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