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Nishino-Shima volcano (Izu Islands, Japan): lava flows continue to enlarge merged island

Mon, 6 Jan 2014, 13:37
13:37 PM | BY: T
Comparison of Nishino-shima between 28 Dec and 6 Jan (Japanese Coast Guard)
Comparison of Nishino-shima between 28 Dec and 6 Jan (Japanese Coast Guard)
The new island that had "touched" Nishino-Shima has continued to grow and the two islands form now a coherent single one, with a interesting "butterfly" shape. This might of course change quickly again as well. There are now no traces left of the beach and the little colored lake that existed a week ago when the two islands started to merge.
The image shows a comparison of two aerial photographs taken on 28 Dec and 6 Jan by the Japanese Coast Guard.
Most of the island's growth during the past days was by lava flows that formed and enlarged the lava delta to the SW, the currently lowest-lying area (which is the most natural place for new lava flows to head to). It can also be seen that the two vents first observed on 26 Dec are still active. At the moment, it is unclear whether strombolian activity is still occurring, but this seems likely.

Previous news

Fri, 27 Dec 2013, 07:03

Niijima and Nishino-Jima islands merge (Japan)

The two islands of Nishino-Jima (t) and Niijima (b) have merged.
The recently born new Niijima island merged with the main island Nishino-Jima yesterday. Both are in fact two summits of the same volcanic edifice. Activity continues to enlarge the new land by lava flows and occasional strombolian explosions. ... Read all
Wed, 25 Dec 2013, 06:00

Nishinoshima volcano (Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 25 December-31 December 2013 (New Activity / Unrest)

According to a news article, since mid-December lava flows from the newly formed Niijima island expanded NE towards Nishino-shima, and on 24 December the two islands joined. The Niijima area was about 500 m long and 450 m wide. ... Read all
Show more
caldera, submarine volcano approx 70 m / 215 ft (currently growing)
Volcano Islands, Japan, 27.27°N / 140.88°E
Current status: minor activity or eruption warning (3 out of 5) Nishino-shima volcano eruptions:
2019-ongoing, 2017, 2013-15, 1985(?), 1982(?), 1980(?), 1978(?), 1975(?), 1973-74
Typical eruption style
explosive
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