Fukutoku-Okanoba volcano

The Fukutoku-Okanoba volcano is an underwater volcano located some 25 meters below the sea and five kilometers north of Japan?s South Iwo Jima Island. It erupted on August 13 this year. The eruption is unique as its plumes reached the lower boundary of the stratosphere.
According to experts, the volcanic explosion is posing risks to ships and planes. NASA?s Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) sensor recorded the plume reach 16-km above the surface. The normal cruising altitude of aircraft is around 10 km. The plume has reached to that height because the eruption had occurred in shallow water.