New eruption at Nishinoshima volcano, Japan

A new eruption has started at Nishinoshima volcano on April 20, 2017, the Japan Meteorological Agency reports. It was characterized by the ejection of white smoke from the vicinity of the crater in the center of the island and a lava flow. The last eruption of this volcano took place in November 2015.

The eruption was spotted by Japanese CoastCoasts are projected to be exposed to increasing risks, including coastal erosion, due to climate change and sea level rise. The effect will be exacerbated by increasing human-induced pressures on coastal areas (very high confidence). By the 2080s, many millions more people than today are ... Guard aircraftThe principal determinant of fuel consumption in aircraft is drag. about 05:25 UTC (14:25 JST) on April 20, 2017, prompting authorities to issue an alert to vessels passing nearby.

According to the Tokyo VAAC, the volcanic ashAsh is the incombustible part of the fuel that remains after combustion. was reaching 2.4 km (8 000 feet) by 08:00 UTC. At the time, the plume was not visible in satellite imagery and the Aviation Color Code was not raised.

Nishinoshima eruption on April 19, 2017

Nishinoshima erupting on April 20, 2017. Credit: Japan Coast Guard

JMA said there is a possibility the eruption will continue and warned everybody not to approach within 1.5 km (0.93 miles) of the crater.

Geological summary

The small island of Nishinoshima was enlarged when several new islands coalesced during an eruption in 1973-74. Another eruption that began offshore in 2013 completely covered the previous exposed surface and enlarged the island again. WaterClimate change is expected to exacerbate current stresses on water resources from population growth and economic and land-use change, including urbanisation. On a regional scale, mountain snow pack, glaciers and small ice caps play a crucial role in freshwater availability. Widespread mass ... discoloration has been observed on several occasions since.

The island is the summit of a massive submarine volcano that has prominent satellitic peaks to the S, W, and NE. The summit of the southern cone rises to within 214 m of the sea surface 9 km SSE.

Featured image: Nishinoshima eruption on April 19, 2017. Credit: Japan Coast Guard

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