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Random pictures
Nishino-shima volcano
caldera, submarine volcano approx 70 m / 215 ft (currently growing)
Volcano Islands, Japan, 27.27°N / 140.88°E
Current status: dormant (1 out of 5)
Nishino-shima webcams / live data | Reports
Nishino-shima volcano books
Nishino-shima volcano eruptions:
2017, 2013-15, 1985(?), 1982(?), 1980(?), 1978(?), 1975(?), 1973-74
Typical eruption style:
explosive
Last earthquakes nearby
Latest satellite images
 

Nishino-shima volcano news & activity updates:

Nishino-shima volcano (Volcano Islands, Japan) activity update

Tuesday Mar 04, 2014 11:37 AM | BY: T

Part of Nishino-shima island with active flows on the southern shore, forming new bays and a small lake that once was a bay (Japan Coast guard)
Part of Nishino-shima island with active flows on the southern shore, forming new bays and a small lake that once was a bay (Japan Coast guard)
Outlines of the new land on NIshino-shima island at various dates up to 28 Feb
Outlines of the new land on NIshino-shima island at various dates up to 28 Feb
View of Nishinoshima from the NW, showing the two cones around the vents
View of Nishinoshima from the NW, showing the two cones around the vents
Aerial view of Nishinoshima on  28 Feb 2014 (Japan Coast Guard)
Aerial view of Nishinoshima on 28 Feb 2014 (Japan Coast Guard)
The island continues to grow as lava flows slowly spread into several directions. This is shown nicely by the latest aerial survey pictures the Japanese Coast guard took on 28 Feb. The most active flow fronts are currently at the southern shore while advance on the northern and eastern margins of the flow field has slowed down.
Two prominent cones have formed around the main vents, the smaller and younger of which still has strombolian activity as well, judging from the available photos.

One can note the closure of a small bay that had been formed in early Feb by lava flow tongues; eventually, the two flows touched and separated the bay from open water, turning it into a small lake. Several other small bays present now (or, on 28 Feb, at least) are in the process of forming and probably become lakes as well in the future. The discoloration of the enclosed water comes from dissolved gasses and fine material in suspension. The fate of these lakes will depend on the evolution of the lava flows. If new flows cover them, they might well disappear as well.
Previous news
Aerial view of Nishinoshima on 16 Feb 2014 (Japan Coast Guard)
Friday, Feb 21, 2014
The island continues to grow by progressing lava flows into several directions, as the latest images by the Japanese Coast Guard from 16 Feb show. Its highest peak, formed by the western of the 2 active vents, was measured at 66 m, i.e. it now reached almost twice the height of the peak of the old island. The new addition has more than doubled the size of the island so far. ... [more]
Nishino-Shima island on 3 Feb. For comparison, the previous shorelines on 20 Jan (yellow) and 21 Nov past year (white). (Image: Japanese Coast Guard)
Wednesday, Feb 05, 2014
New images from an overflight on 3 February confirm that the activity on the former new island continues steadily. Over the past weeks, the vent has been feeding several active lava flow fronts, that enlarged the land covered by new lava in more or less all directions. ... [more]
A hot spot on Nishino-Shima island and its location in the western Pacific
Tuesday, Feb 04, 2014
The eruption on the now merged Nishino-Shima and Niishima islands continues. A hot spot is visible on current MODIS data. ... [more]
The former new island off Nishino-Shima seen on 20 Jan 2014(Japan Coast guard)
Sunday, Jan 26, 2014
The volcano continues to enlarge the island with lava flows, but seems to have increasingly explosive activity as well. Ash plumes to altitudes of 4,000 ft (1.2 km) were reported during the past days. These could have originated from more violent water-magma interaction (phreatomagmatic activity) or simply stronger strombolian explosions. ... [more]

Wednesday, Jan 15, 2014
The Japanese Coast Guard made an overflight yesterday and published the attached picture of the (former new) island. It seems that while it is still might be effusing some lava that form flows reaching the eastern shore in the bay near the vents, the rate of lava effusion/growth has slowed down. No large changes of the island appear visible when compared to the images a week ago. [more]

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