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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 15.62°N
  • 145.57°E

  • -230 m
    -754 ft

  • 284202
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Ruby.

 Available Weekly Reports

There are no Weekly Reports available for Ruby.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1995 Oct 11 (?) 1995 Oct 25 Confirmed 0 Historical Observations
1966 Apr 21 ± 7 days 1966 May Confirmed 0 Hydrophonic

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Bloomer S H, Stern R J, Smoot N C, 1989. Physical volcanology of the submarine Mariana and Volcano arcs. Bull Volc, 51: 210-224.

Johnson R H, 1973. Acoustic observations of nonexplosive submarine volcanism. J Geophys Res, 78: 6093-6096.

Kohut E, 2007. . (pers. comm.).

Norris R A, Johnson R H, 1969. Submarine volcanic eruptions recently located in the Pacific by SOFAR hydrophones. J Geophys Res, 74: 650-664.

Ruby, a basaltic submarine volcano that rises to within 230 m of the sea surface near the southern end of the Mariana arc NW of Saipan, was detected in eruption in 1966 by sonar signals (Norris and Johnson, 1969). In 1995 submarine explosions were heard, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor.