Ahyi volcano (Mariana Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 November-15 November 2022 (New Activity / Unrest)
Wed, 16 Nov 2022, 15:00 15:00 PM | BY: VNOn 15 November the USGS reported that hydroacoustic sensors at Wake Island began to record signals in mid-October that are consistent with submarine volcanic activity. A combined analysis of the hydroacoustic signals and seismic data from stations on Guam and Chichijima Island, Japan, suggest the source of this activity is at or near Ahyi seamount. Contrary to initial observations of there being discoloration on the water's surface, a reanalysis of satellite imagery from 6 November showed no evidence of water discoloration at the ocean surface.
Source: Emergency Management Office of the Commonwealth of the Mariana Islands and United States Geological Survey Volcano Hazards Program
From: Global Volcanism Program, 2022. Report on Ahyi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 9 November-15 November 2022. Smithsonian Institution and US Geological Survey.
Tue, 15 Nov 2022, 18:32
There are strong indications that an undersea volcano in the Northern Marianas could be in eruption. ... Read all
Wed, 21 May 2014, 06:00
Ahyi volcano (Mariana Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 May-27 May 2014 (New Activity / Unrest)
On 23 May the USGS reported that during the previous week one explosion signal from the source at or near Ahyi seamount was detected. Seismic activity had been low since 8 May continuing to indicate that the eruption had possibly paused or ended. ... Read all