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Posts Tagged ‘Nishinoshima’

Strong Earthquake Strikes Near Nishinoshima Volcano

Posted by feww on November 20, 2015

M6.0 quake strikes SSE of Chichi-shima, Japan

Centered at 25.9ºN, 143.4ºE, about 90km SSE of Chichi-shima, the quake occurred at a depth of 10km , according to Japan’s weather agency.

Approximate Distances

  • 990km SSE of Katsuura, Japan
  • 1,050 SSE of Tokyo

Nishinoshima Volcano (27.247°N, 140.874°E)

The quake struck near Nishinoshima volcano, which resumed eruption on Tuesday. Intermittent eruptions have helped the volcanic island to grow by more than 12-folds in the past two years.

Located about 1,000 kilometers south of Tokyo, Nishinoshima Island currently measures about 2,000 meters across.

In 2013, an undersea eruption formed a new island near Nishinoshima, and continuing lava flows eventually linked the two islands several months ago.

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Volcano Erupts in Ogasawara Islands

Posted by feww on November 21, 2013

Warning issued to Pacific shipping after volcano erupts, forming a new Island

Authorities have warned shipping in the Pacific Ocean to maintain vigilance for airborne volcanic material after a volcano erupted near one of the Ogasawara Islands, some 1,000 kilometers south of Tokyo, NHK reported Japan’s Meteorological Agency (JMA) as saying.

Japan Coast Guard has confirmed black smoke spewing out of a new land mass about 500 meters southeast of Nishinoshima island, JMA said

Video footage shows a plume of black and white smoke and steam  rising to a height of more than 600 meters above a new landmass measuring about 200 meters across.

Ogasawara - new island formed from volcanic eruption
Black and white smoke and steam rising to a height of more than 600 meters above a new 200-m long landmass created by volcanic eruption near Nishino shima, Bonin Islands, south of Japan. Screenshot from NHK news video clip.

new volcanic island
Screenshot  from NHK news video clip.

“The agency says multiple clusters of white smoke overhead suggest intermittent explosions,” said the report.

Volcanic activity created a new island which was fused to the uninhabited Nishinoshima between 1973 and 1974, the last time when eruptions occurred near the island.


Location Map of Volcano Islands, Ogasawara Islands, Japan region. Image credit: Lim Tor


Bonin Islands (aka, Ogasawara Group, in Japan).  Click Image to Enlarge.

In 2010, one of the volcanoes in the region erupted, spewing smoke and ash to a height of about about 100 meters above the sea level. The surrounding sea area changed to a greenish-yellow color with nearby areas turning cloudy.

JMA said the volcano, called Fukutokuokanoba, had erupted seven times since 1904, forming ephemeral islands (temporary land masses) on three occasions, all of which later sank below the ocean surface.

The first known ephemeral island called Shin-Iwo-jima (New Sulfur Island) was formed in 1904, and the most recent in 1986.

What the Volcano Islands Look Like


North Iwo Jima Island (Official Japanese name Kita-iōtō, but commonly known as Kita-iōjima, meaning “north sulfur island”) is the northernmost island of the Volcano Islands cluster of the Ogasawara Islands, about 1175 km south of Tokyo. Image Credit: Chisatos

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