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Nishimo-shima volcano (西之島, literally: Western Island, also: Rosario Island) is the tiny submerged part of a caldera in the northern Volcano Islands of Japan. The small 700 m wide island was significantly enlarged during the last eruption in 1974, which joined several new islands that formed then.
Water discoloration due to possible minor eruptions and / or shallow submarine hydrothermal activity in the area is a frequent sight.
The mostly submerged volcano is a massive seamount with prominent flank cones on the south, west and NE flanks. The southern cone rises to a depth of 214 m below the sea surface, 9 km SSE of Nishino-shima. caldera, submarine volcano approx 70 m / 215 ft (currently growing) Volcano Islands, Japan, 27.27°N / 140.88°E Current status: normal or dormant (1 out of 5) Nishino-shima webcams / live data | ReportsNishino-shima volcano booksNishino-shima volcano eruptions:
2017, 2013-15, 1985(?), 1982(?), 1980(?), 1978(?), 1975(?), 1973-74 Typical eruption style:explosive Last earthquakes nearbyLatest satellite images  Nishino-shima volcano news & activity updates:Nishino-shima volcano (Japan): old island has disappeared under fresh lava
Saturday Oct 11, 2014 21:37 PM | BY: T  Landsat 8 satellite image showing the Nishino-shima island on 8 Oct; white lines=contour of old island now covered by fresh lava flows (annotation: Culture Volcan) The volcanic eruption on the remote island continues. A recent satellite image that the lava flows from the active vent(s) have now covered the older part of the island, the original tiny Nishino-Shima island.
The ongoing eruption had started as a submarine eruption almost one year ago, when it built a second island to the SE of the existing one. In early January this year, the growing new island had merged with the old one, and has been growing in size ever since.
Culture Volcan Blog posted the attached Landsat 8 photo from 8 Oct which shows that the old Nishino-Shima island has now disappeared under fresh lava flows.
Since late June-early July, the lava flows had been spreading northwards, covering more and more of the older land.
The surface of Japan's newest land is approximately 6 square km. Previous news
Friday, Sep 12, 2014
Lava flows continue to be active and enlarge the growing island. During the past weeks, these have contributed to the growth of a platform towards the north of the active vents. [more]Sunday, Aug 31, 2014 The island remains active and continues to grow as lava flows add new land to it. The Japanese Coast Guard made another survey flight on 26 August and observed ongoing effusive and explosive activity in the main crater. ... [more]Monday, Jul 28, 2014 Activity at the growing island continues, perhaps even with increased intensity, judging from the recent pictures obtained by the Japanese Coast Guard on 23 July: ... [more]
Wednesday, Jul 16, 2014 The currently fastest growing island of the world remains active, with both effusive (lava flows enlarging the island) and explosive activity (strombolian and phreatomagmatic = water-magma explosions). ... [more] Monday, Jun 30, 2014 An explosive event occurred last night at the growing island volcano. VAAC Tokyo reported an ash plume at 10,000 ft (3 km) altitude drifting to the northeast. [more]More on VolcanoDiscovery: Photos taken on our our tours. - volcano adventures, group photos, expedition and camp life, people and impressions.  Walking & Study tours: VolcanoDiscovery's signature tours for small groups: Discover volcanoes and volcanic areas from close with an expert in their field! These tours have a broad mix of activities and interests from photography, walking, study travel, nature & culture.  Earthquake News: News in this category include: latest and archived earthquake lists & maps, reports, largest recent earthquakes, quakes near volcanoes, significant quakes etc - news and articles about earthquakes world-wide. |
