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Ahyi volcano (Mariana Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 November-22 November 2022 (New Activity / Unrest)

Wed, 23 Nov 2022, 15:00
15:00 PM | BY: VN
On 18 November the USGS reported that hydroacoustic and seismic signals suggestive of underwater eruptive activity at Ahyi Seamount had declined over the past week. No other signs of volcanic unrest were detected at the seamount.

Source: US Geological Survey
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From: Global Volcanism Program, 2022. Report on Ahyi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 16 November-22 November 2022. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 16 Nov 2022, 15:00

Ahyi volcano (Mariana Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 November-15 November 2022 (New Activity / Unrest)

On 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. ... Read all
Tue, 15 Nov 2022, 18:32

Ahyi undersea volcano (Mariana Islands) might be erupting beneath the ocean surface

3D model of Ahyi volcano (image via GVP)
There are strong indications that an undersea volcano in the Northern Marianas could be in eruption. ... Read all
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Ahyi volcano
Submarine volcano -137 m / - 449 ft
United States, Mariana Islands, 20.42°N / 145.03°E
Current status: minor activity or eruption warning (3 out of 5) Ahyi volcano eruptions:
1979?, 2001, 2014, 2022 (mid Oct - ongoing, to be confirmed)
Typical eruption style
unspecified
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