Iriomote-jima Volcan, Ryukyu Islands (Japan)

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Iriomote-jima volcan

Volcan sous-marin -200 m / -656 ft
Îles Ryūkyū, Japon, 24.56°N / 124°E
Condition actuelle: en sommeil (1 sur 5)

Style éruptif tipique: Explosive
Eruptions du volcan Iriomote-jima: 1924: large explosive submarine eruption
Derniers séismes proches:

Time	Mag. / Depth	Distance	Location
Sun, 16 Jun
Sun, 16 Jun 13:45 UTC	M 0.4 / 15 km	41 km	西表島付近 (Near Iriomote Island)
Sun, 16 Jun 11:13 UTC	M 1.5 / 71 km	32 km	石垣島近海 (Near Ishigaki Island)
Sat, 15 Jun
Sat, 15 Jun 19:27 UTC	M 2.3 / 91 km	28 km	石垣島近海 (Near Ishigaki Island)
Sat, 15 Jun 05:15 UTC	M 2.1 / 69 km	53 km	石垣島近海 (Near Ishigaki Island)
Fri, 14 Jun
Fri, 14 Jun 21:20 UTC	M 0.7 / 15 km	37 km	西表島付近 (Near Iriomote Island)

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Iriomote-jima volcano is a shallow submarine volcano 25 km NNE of the island of the same name.
Iriomote-jima island is the southernmost in the chain of the Ryuku Islands which still belong to Japan. It is located almost 1000 km SSW of Japan's main island Honshu and only 200 km east of Taiwan.

Introduction:

Iriomote-jima volcano lies in an area with an estimated depth of 200-300 m. A major submarine eruption took place at this volcano on 31 October 31 1924. It was one of the largest historical eruptions in Japan. The eruption produced about 1 cubic kilometer of rhyolitic pumice, which formed large rafts on the sea, which were drifted by currents as far as Hokkaido in the north, about 2000 km distance. The largest pumice blocks exceeded 1 x 2 m in size.

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