Skip to main content
← Back to map
⇄ Compare

Ruby

Stratovolcano · United States · 174m (submarine)

Ruby submarine volcano in the southern Mariana arc is seen in this bathymetric data looking from the NW with 2x vertical exaggeration. Depths in this image range from 184 to 2,955 m, and it rises to within 230 m of the ocean surface NW of Saipan. There was an eruption detected in 1966 by sonar signals. In 1995 submarine explosions were heard, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor.
Ruby submarine volcano in the southern Mariana arc is seen in this bathymetric data looking from the NW with 2x vertical exaggeration. Depths in this image range from 184 to 2,955 m, and it rises to within 230 m of the ocean surface NW of Saipan. There was an eruption detected in 1966 by sonar signals. In 1995 submarine explosions were heard, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor. · Photo: Image courtesy of Susan Merle (Oregon State University/NOAA Vents Program).
Type
Stratovolcano
Country
United States
Region
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Elevation
174m (submarine)
Coordinates
15.605, 145.572
Last eruption
2023
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

Ruby is a basaltic submarine volcano that rises to within about 200 m of the ocean surface near the southern end of the Mariana arc NW of Saipan. An eruption was detected in 1966 by sonar signals (Norris and Johnson, 1969). Submarine explosions were heard in 1995, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1966~1972 · 1 eruptions · max VEI 11995~2000 · 1 eruptions · max VEI 12017~2023 · 1 eruptions · max VEI 119661977199520062017

Detailed timeline

  1. 2023VEI 1Observed
    2023-09-14 – 2023-09-15
  2. 1995VEI 1Observed
    1995-10-11 – 1995-10-25
  3. 1966VEI 1Observed
    1966-04-21 – 1966-05-16

External links

⚠ For reference only. Not for emergency response.