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South Sarigan Seamount

Stratovolcano · United States · 184m (submarine)

Sidescan sonar imagery taken in 2003 shows South Sarigan seamount rising to within about 184 m of the ocean surface 12 km S of Sarigan Island. It was the site of an explosive submarine eruption in May 2010 that sent a plume of ash and steam to 12 km altitude. The seamount has an irregular summit with multiple peaks, including a possibly young cone at about 350 m depth, and flank morphology suggests it is frequently active.
Sidescan sonar imagery taken in 2003 shows South Sarigan seamount rising to within about 184 m of the ocean surface 12 km S of Sarigan Island. It was the site of an explosive submarine eruption in May 2010 that sent a plume of ash and steam to 12 km altitude. The seamount has an irregular summit with multiple peaks, including a possibly young cone at about 350 m depth, and flank morphology suggests it is frequently active. · Photo: Map courtesy Bill Embley and William Chadwick (NOAA: http://oceanexplorer.noaa.gov/explorations/03fire/logs/feb17/feb17.html)
Type
Stratovolcano
Country
United States
Region
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Elevation
184m (submarine)
Coordinates
16.580, 145.780
Last eruption
2010
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
No Data (checked)
Geological summary

South Sarigan seamount, rising to within about 184 m of the ocean surface 12 km S of Sarigan Island, was the site of a short explosive submarine eruption in May 2010 that produced a plume of ash and steam to 12 km altitude. Sidescan sonar imagery taken in 2003 shows an irregular summit with multiple peaks, including a possibly young cone at about 350 m depth, and flank morphology suggests it is a frequently active volcano.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
2010~2010 · 1 eruptions · max VEI 320102010201120112011

Detailed timeline

  1. 2010VEI 3Observed
    2010-05-27 – 2010-05-29
    Northern summit cone, 184 m below sea level

External links

⚠ For reference only. Not for emergency response.