On the 13th of this month, a survey by the Japan Coast Guard confirmed that an island with a diameter of about 1 km was formed at Fukutoku-Okanoba, a submarine volcano south of Iwo Jima in the Ogasawara Islands, where the eruption was confirmed for the first time in 11 years. rice field.
As active eruption activity continues, the Japan Meteorological Agency is calling on ships and aircraft passing nearby to be wary of large volcanic bombs and high-speed eruptions called "base surges."
Confirmation of "Niijima" at this place is the first in 35 years. Last time, it disappeared in about 2 months.
According to the Japan Meteorological Agency, an eruption was confirmed at Fukutoku-Okanoba on the 13th of this month, and the Japan Coast Guard observed that the height of the eruption was as large as 16,000 meters above sea level.
Although the height of the eruption is gradually decreasing, active eruptive activity continues, and pumice stones and the like are flowing over about 60 km on the sea surface.
In addition, a survey conducted by the Japan Coast Guard on the 15th revealed an island shaped like a horse with a diameter of about 1 km in the sea area directly above the submarine volcano.
According to the Japan Meteorological Agency, the island was confirmed in Fukutoku-Okanoba for the first time in 35 years since 1986, but at that time it disappeared in about two months due to being scraped by waves.
The Japan Meteorological Agency continues the eruption warning announced in the surrounding sea area, and a phenomenon called "base surge" in which a mixture of volcanic gas and volcanic ash spreads at high speed, including large volcanic stones that scatter in a trajectory on ships and aircraft navigating nearby. I'm calling you to be vigilant.