Eruption was confirmed around 6 pm on the 27th at "Eruption Asane", a submarine volcano north of Iwo Jima in the Ogasawara Islands.
The Japan Meteorological Agency issued an eruption warning in the surrounding sea area late at night on the 27th, saying that an eruption had occurred, calling attention to vessels navigating in the vicinity.
According to the Japan Meteorological Agency, at around 6 pm on the 27th, the meteorological satellite "Himawari" observed eruption from "Eruption Asane", a submarine volcano north of Iwo Jima in the Ogasawara Islands.
The eruption rises to about 5500 meters above sea level, and meteorological satellite images show that it is flowing to the northeastern sea.
For this reason, the Japan Meteorological Agency determined that an eruption had occurred and issued an eruption warning in the surrounding sea area after 11:00 pm on the 27th.
At "Eruption Asane", the eruption continued, with the eruption being confirmed to rise to 7,000 meters above sea level at around 11:30 pm and around 2:20 am on the 28th.
The Japan Meteorological Agency said that eruptive activity may continue in the future, and it is a phenomenon that large volcanic stones that scatter in a ballistic manner on vessels navigating the nearby sea area and a mixture of volcanic gas and volcanic ash called "base surge" spread at high speed. I am calling for caution.
We also call attention to floating objects such as pumice stones.
What is eruption Asane?
"Eruption Asane" is a submarine volcano north of Iwo Jima, and the uninhabited island of North Iwo Jima is nearby.
According to the records of the Japan Meteorological Agency, the phenomenon of discoloration of seawater has been observed one after another in the eruption Asane for the past 40 years, but no eruption has been observed.
It is said that an eruption was confirmed by observation of fishing boats from 1945 to 1945.
It is also about 130 kilometers away from Fukutoku-Okanoba, where a large-scale eruption occurred last year.