Fukutoku-Oka-no-Ba volcano (Volcano Islands, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 August-24 August 2021 (New Activity / Unrest)
The Japan Coast Guard reported that the eruption at Fukutoku-Oka-no-Ba continued during 16-22 August. Gas-and-steam emissions continued to be observed from the center of the island on 16 August. The pumice raft that was first identified on 15 August had expanded to about 100 km to the WNW and was about 13 km wide.
Wed, 18 Aug 2021, 06:0006:00 AM | BY: VN
Brown discoloration was visible surrounding the new island, which had a variable shape but a consistent diameter of 1 km by 16 August.
A local fisherman in the Ogasawara Islands who was fishing in South Iwo Jima (5 km NNE) posted photos and videos on 17, 20, and 22 August that showed strong white gas-and-steam plumes rising above the volcano. On 20 August lightning was visible within the gas-and-steam plume. On 22 August the plume was observed during 0430-0630.
Sources: Japan Coast Guard, Yutaka Kosugi
From: Global Volcanism Program, 2021. Report on Fukutoku-Oka-no-Ba. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 August-24 August 2021. Smithsonian Institution and US Geological Survey.
Tue, 17 Aug 2021, 05:59
A spectacular satellite image of the Planet satellite company from 15 August depicts pumice swirling trail in the Pacific Ocean. Pumice is currently meandering on the sea as the volcano started to produce Surtseyan eruption on 13 August and led to the birth of the new island. Pyroclastic material is flowing about 60 km to the northwest of the volcano. Read all
Mon, 16 Aug 2021, 16:18
A new island was born in the Pacific Ocean over the past weekend: The powerful submarine eruption of the Fukutoku-Okanoba volcano that surprised observers and scientists around the world, producing a spectacular mushroom plume of steam and ash to 16 km altitude, quickly created a new cone that has now breached the surface. ... Read all