On the 26th, observations conducted by the Japan Coast Guard confirmed that the color of seawater has changed at the "Bayonnaise Rocks", a submarine volcano in the Izu Islands.
The Japan Meteorological Agency has issued an eruption warning for the surrounding sea area, saying that a submarine eruption may occur in the future, and is calling for vigilance to ships sailing in the vicinity.
According to the Japan Meteorological Agency, after 1:00 pm on the 26th, the sea surface was discolored to a pale yellowish green color with a diameter of 100 meters at the submarine volcano "Bayonnaise Rocks" located about 65 km south-southeast of Aogashima in the Izu Islands. was confirmed by observation by an aircraft.
The discoloration is spread around a shallow reef with a depth of about 50 meters called "Myojin reef" that has repeatedly erupted in the past.
It was the first time since November 2017 that seawater discoloration was confirmed in the Bayonnaise Rocks.
Japan Meteorological Agency announced an eruption warning at 7:30 p.m.
The Japan Meteorological Agency announced an eruption warning at 7:30 pm on the 26th, saying that a submarine eruption may occur in the future.
The Japan Meteorological Agency has warned ships navigating nearby waters to be cautious as large volcanic blocks and volcanic gas and volcanic ash spreading at high speeds called "base surges" may occur during eruptions. I want you to pay attention to things.
The Bayonnaise Rocks are an active volcano consisting of multiple reefs that erupted repeatedly from the Meiji to Showa periods.
During the submarine eruption of 1952, a Japan Coast Guard research vessel was involved in the eruption, killing all 31 crew members.